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The Industrial Internet of Things (IIoT) faces various challenges in ensuring secure communication, authentication, and data integrity due to its distributed nature and evolving threat landscape. To address these issues, this paper proposes the integration of blockchain authentication as a robust solution to enhance security and reliability in IIoT networks. By leveraging Federated Learning with blockchain technology, the proposed solution aims to improve authentication mechanisms by training models across multiple edge devices, increasing fault tolerance, and adaptability while reducing the risk of single points of failure. The use of blockchain technology ensures a tamper-proof and transparent ledger for securely storing authentication data and model updates, enhancing security and integrity in IIoT networks. The results and analysis demonstrate that the integration of Federated Learning and blockchain technology effectively addresses interoperability issues, performance optimization concerns, and security vulnerabilities within IIoT networks, offering a more efficient, secure, and scalable authentication alternative.

The Industrial Internet of Things (IIoT) has revolutionized industrial processes, offering automation and data-driven decision-making. However, this interconnectedness brings new security challenges, especially in crucial infrastructure sectors. Traditional security measures are inadequate, leading to the exploration of innovative solutions. Blockchain technology has emerged as a promising solution due to its decentralized and immutable nature. This paper proposes a Hybrid Blockchain-Based Authentication Mechanism for IIoT, combining Delegated Proof of Stake (DPoS) and Elliptic Curve Cryptography (ECC). The hybrid architecture utilizes public and private blockchains to ensure scalability, efficiency, and security. Lightweight consensus algorithms, DPoS, are incorporated to optimize performance, while ECC provides efficient cryptographic techniques suitable for IIoT environments. An interoperable framework facilitates seamless integration with existing infrastructure, ensuring regulatory compliance and compatibility. Decentralized identity management further enhances security and privacy. Results and analysis demonstrate the effectiveness of the proposed solution, positioning hybrid blockchain architecture as the most suitable approach for enhancing security in IIoT environments.

Close combat material is one of the materials from Tikkontu which is one of the learning materials for Naval Academy Cadets, especially Marine Corps Cadets. There is a possibility that close combat will become one of the new combat "arenas" that will occur in the future. Technological developments are also an important point that must be studied by cadets so that they can be utilized in the military field. This makes researchers innovate in combining Virtual Reality technology which is usually called Virtual Reality in close combat tactics training with the aim of getting an overview regarding PJD. This also teaches cadets who will graduate as dantons to innovate in combining technology that can improve their abilities in tactics. existing close combat. This aims to create more effective and efficient training by getting good combat visibility from the virtual world

The Long-Term Contraceptive Method (MKJP) is a contraceptive that can be used for a long period of time, more than two years, effectively and efficiently for the purpose of spacing births for more than three years or terminating pregnancies in PUS who no longer want to have more children. Family planning devices/drugs/methods that include MKJP are IUD/IUD, Implant, MOP and MOW. In Aceh Province, especially Aceh Singkil, the number of couples of childbearing age (PUS) is 17,625 pairs. The most widely used contraceptive method is PIL contraception, while 216 (1.2%) use MKJP IUD contraception and 481 (2.7%) use implant contraception. The aim of this research is to analyze the socio-cultural relationship and knowledge towards mothers' interest in using long-acting contraceptives (MKJP) in the Singkil Community Health Center UPTD Work Area in 2024. This research is quantitative with a cross-sectional research design conducted in the Singkil Community Health Center UPTD Work Area. . The population in this study was 46 women of childbearing age. The sampling technique used is Total Sampling. The instrument used was a questionnaire and bivariate analysis using the Chi Square test. In conclusion, the p-value was obtained: 0.00<0.05, which means there is a socio-cultural and knowledge relationship with mothers' interest in using long-term contraceptive devices (MKJP) in the Singkil Community Health Center UPTD Work Area in 2024.    

This article explores the integration of digital media in cognitive assessment in the context of Indonesian language education at the secondary school level. Advances in digital technology enable more adaptive and varied assessment approaches, facilitating efficient evaluation of students' understanding and their ability to apply language concepts. Bloom's revised Taxonomy emphasizes the importance of measuring higher-order thinking skills, which can be enhanced through digital technology to provide students with more rapid and personalized feedback. These findings suggest that the integration of digital technology in cognitive assessment not only increases learning effectiveness but also prepares students to face increasingly complex global educational challenges.      

This study develops a Decision Support System (DSS) for selecting outstanding students at SDN Kedunglumbu using the Simple Additive Weighting (SAW) method. The main goal of this DSS is to help the school determine outstanding students more objectively and efficiently. The SAW method was chosen for its ability to provide weighted sums of relevant criteria, ensuring accurate and fair decisions. The system development follows a waterfall approach, with structured stages from planning to implementation. The evaluation criteria include PPKN, Indonesian Language, Science, Social Studies, and Mathematics, with seven students as the evaluated alternatives. The implementation of the DSS successfully displays information about outstanding students clearly, with Natasha Cahya Putri Ayu selected as the outstanding student with the highest preference score of 0.786. System testing using the blackbox testing method confirms that the system operates as expected, and calculations using the SAW method are consistent with manual calculations. Overall, the developed DSS successfully facilitates the selection process of outstanding students efficiently and objectively, while the SAW method proves effective in providing reliable results and supporting better decision-making in the educational environment.      

21st century teachers are required to be professional, required to have a combination of 4 main skills, namely: academic, professional and social skills to educate and teach students effectively and efficiently. Increasing teacher academic competence is very important in supporting students' preparation for the 21st century generation, in addition to other competencies. Academic competency includes mastery of material and how to convey that material effectively and efficiently. This Community Service Activity (PKM) aims to improve teacher academic competence through training and mentoring activities with Project Based Learning (PJBL) and Problem Based Learning (PBL) learning models. The PKM method used is a service learning process. Participants in PKM activities are teachers from SMAN 1 Purwosari, Pasuruan Regency. Data was collected using techniques: observation, interviews, tests and questionnaires. The results of PKM activities show an increase in teacher academic competence regarding 2 learning models (PJBL and PBL). The teacher's response after participating in PKM activities was very good and positive and they even recommended similar activities in 2025.

Babycos.id a home-based business in the distribution of baby and children's supplies, was founded in 2018 in South Tangerang with a focus on sales through online platforms such as Shopee, Lazada, and Tiktok Shop. In facing increasingly fierce business competition, employee management becomes a crucial aspect, especially in the transparent and objective determination of bonuses. The determination of bonuses is considered a form of reward that can boost employee motivation. This outlines the rapid development of Babycos.id's e-commerce in 2022. To motivate employees, the owner of Babycos.id aims to provide significant rewards. Despite the increase in revenue, the management of employee bonus data is still conducted manually through WhatsApp groups, resulting in errors and lengthy calculation times. To address these issues, the author has designed a web-based employee bonus information system, applying the Personal Extreme Programming method. The use of a website-based method with PHP programming language and MySQL database is expected to provide an effective and efficient solution for employee bonus management at Babycos.id. The anticipated outcome is a system capable of addressing existing issues and making a positive contribution to enhancing employee motivation and performance.  

Innovation in Hajj and Umrah management through the use of social media holds significant potential to enhance service efficiency and quality. Social media platforms like Facebook, Instagram, Twitter, and WhatsApp can be used to quickly and accurately provide education and information to pilgrims. Organizers can deliver guidelines, health tips, and real-time updates about conditions in the holy land, and respond to pilgrims' questions and complaints more efficiently. This research explores how social media can be integrated into Hajj and Umrah management to improve service quality and risk management, focusing on the role of social media in education, responsiveness, and risk management. The findings indicate that social media is effective in disseminating information and enhancing interaction between organizers and pilgrims, though challenges exist in technology access gaps and the risk of spreading inaccurate information.    

All PT Astra International BMW Semarang transactions are recorded in the database but the problem is that the stock management is  efficientless so  the part stock that buyers are interested is not available. This research aims to conduct a comparative mining results using the association rule with apriori algorithm for year 2021, 2022 and 2023 sales transaction dataset with total of 43.694 records using the Rstudio. Data mining process in each year uses the same parameters for each itemset combination. The best association pattern occurs in 2023 with support value 0.05913841 and confidence value 100%. This can be concluded that the rules formed from each year could be different eventhough using same parameters. The item that always appears in the association rule from 2021 – 2023is Z99000000333 (BMW Engine OIL) which is often purchased with items named “Set fil-oil” so it can be a recommendation for  item stocking  in the warehouse.

BPJS Employment cooperates with many employer companies and Work Accident Service Centers in managing Work Accident Insurance. In its management, of course, the company must have an effective and efficient governance system. The research entitled "Governance System for Payment Bills for Work Accident Guarantee Claims at Bpjs Ketenagakerjaan Surabaya Karimunjawa Branch" has the aim of conducting an ongoing analysis of the governance of bills for payment of work accident guarantee claims. The results obtained in this study are that researchers know the benefits of Work Accident Insurance and the procedures and Management System for JKK Payment Bills which are carried out very well by the BPJS Employment Surabaya Karimunjawa.

Mobile applications trend are currently happening due to increased number of people holding smartphones. But this does not mean the end of web and desktop users. Mobile, web and desktop apps will always have its own market and users in manipulating data. The challenges for software developers are how to deliver software to all of those platforms as fast as possible. Efficiency is key in this research, that is to develop a hybrid app. Black box testing will be used in this research to make sure that efficiency is gained throughout the process compared to developing for each platforms independently. Through this research, hopefully can help software developers to develop and deliver applications for user efficiently in a short amount of time.

This research analyzes the use of the Prim Algorithm in determining priority routes for package delivery by express service couriers. Through case studies, this research evaluates the efficiency of package delivery by considering delivery priority and the distance the courier will travel. The research results show that the Prim Algorithm is effective in minimizing delivery loads by connecting priority delivery points with minimal travel distance. This research method uses the Prim Algorithm to create a delivery route graph that connects all priority delivery points with a minimum travel distance, with data including the location of the delivery point, priority and distance between locations. The results show that the Prim Algorithm is effective in minimizing delivery load by generating optimal routes, allowing couriers to prioritize package delivery efficiently. This proves the important role of the Prim Algorithm in package delivery strategies for express service couriers.

Artificial Intelligence (AI) is one area of technology that plays a major role in digital transformation. Human Resource Management (HRM) has an unlimited role to play in creating a fair work environment throughout the world and ensuring fairness in the company. AI analytics can be used in the human resources sector to generate strategies and solutions quickly and enable employees to align processes efficiently. The method used in this research is literature study by collecting information through articles and scientific journals. The research results show that public sector workers must acquire new skills and knowledge necessary to interact with and manage AI systems. In facing advances in AI, companies/agencies need to pay attention to HR career development through training and improving new skills and knowledge needed to interact and manage AI systems. In facing global challenges, AI must be seen as a tool, not a substitute for human resource management.

Social media has become a very effective and efficient tool to promote products and services, including in the agricultural sector. The training was held at the Sumber Jaya Catfish Farmers Group Perum Griya Asri I Tambun Selatan District, Bekasi Regency and aimed to improve the ability of its members to utilize the Facebook platform as an effective and efficient promotional media. The methods used in this training include presentations, direct practice, and group discussions. Training materials include making accounts and Facebook pages, promotional content strategies, as well as interaction management techniques with customers. The results of this training showed an increase in the knowledge and skills of participants in using Facebook to promote catfish production in the Sumber Jaya catfish farmer group. Participants are expected to be able to create and manage Facebook pages, as well as design interesting content to increase visibility and sales. This training is expected to be a model for other farmer groups in utilizing social media to expand the market and improve the welfare of group members. The activities of implementing community service with the target of the purpose of the Community Service (PKM) implementing team to make field observations are to directly observe the location of the target area. The outputs to be achieved are: Publications in Print or Electronic Scientific Journal Articles in accredited national journals, articles in national journals are not accredited and local, articles in print or electronic media, both national and local, implementation documentation with photos of activities, and improvement the knowledge and skills of participants in using Facebook to promote catfish production in the Sumber Jaya catfish farmer group.

providers bouquet products for the community, which is located at Jalan GG. RT.015 Mosque RW.005 Talang Ubi Timur Village, Talang Ubi District, Penukal Regency Abab Lematang Ilir. South Sumatra Province. The lack of information conveyed to the public, resulting in a lack of knowledge the community regarding the sales of the ce florist shop in PALI district due to the sales information system that was carried out at the ce florist bouquet shop is still manual, namely people who want to know about the latest information about bouquet items must come directly so that it is more effective and efficient, because it takes a lot of time to arrive at the ce florist's bouquet shop. So from the researcher will make an android information system for the ce florist bouquet shop which will be accessed through the application that we install using Flutter programming language. This study uses the method (SDLC) Waterfall as a development method to be used when designing and build applications, while the research methods to be used is a descriptive method through a qualitative approach. Research collecting data through direct observation, interviews and library research. help tool uml design to help design the system to be created. With the existence of this android application hopefully helps people save time when want to shop at the ce florist bouquet shop.

The wooden shipyard in Bahari Village is a privately-owned facility that conducts maintenance, repair, and construction of new wooden ships. The vessels serviced at this shipyard range from 10 GT to 25 GT and are made from wood. The purpose of this research is to evaluate the management of the wooden shipyard in Bahari I Village, Sampolawa District, South Buton Regency. The methodology used is a survey method, and the data is analyzed using fishbone analysis followed by a descriptive approach. The results of this study indicate that the construction and repair processes of wooden ships in Bahari I Village are not efficient due to facilities that do not meet standards, with only 22% of the necessary conditions being fulfilled. The management of this wooden shipyard is still far from adequate because several aspects remain uncontrolled, such as the shipbuilding process not meeting expected targets, delays in the availability and delivery of raw materials, and the use of very basic tools and outdated technology.  

This research aims to analyze the influence of AI Chat GPT in completing practicum reports by students of the Informatics Engineering Study Program at Muhammadiyah University of Ponorogo. The background to this research is based on the increasingly rapid development of AI technology, offering various conveniences in various fields, including education. The aim of the research is to analyze the extent to which Chat GPT influences students' ability to prepare practical reports effectively and efficiently. The research method used is a quantitative method by collecting data through a questionnaire using a Google form which was distributed to active students of the Informatics Engineering study program at Muhammadiyah University of Ponorogo. The results of this research show that Chat GPT significantly increases students' understanding of practical material, helps students solve problems encountered in preparing reports, and reduces the time needed to complete reports. The implication of this research is the importance of integrating AI technology in the learning process to increase student academic effectiveness and efficiency. However, appropriate policies are needed to avoid excessive dependence on this technology.  

Currently, teachers are required to design and implement active, creative and innovative learning so that they can encourage students to learn better. One of the subjects in the Merdeka Curriculum is science lessons. With interesting media, students will feel happy and interested in participating in learning. An alternative solution that can be applied to increase the creativity of elementary school students is to develop flipbook learning media by implementing project-based learning that is integrated with the teachings of Ki Hadjar Dewantara, namely the Tri-N teachings which include niteni, niroake and nambahake. The flipbook learning media is designed to be as efficient as possible so that it can foster the creativity dimension of students. With the development of flipbook media, it is hoped that students will be more enthusiastic in learning. Based on the results of the implementation of flipbook-based digital science learning module products in science learning, response data was obtained from fifth grade elementary school students as product users, that the flipbook-based digital science learning module products that have been developed are liked by students and can help increase students' learning motivation in learning, can help them learn the materials studied, and can increase their creative dimensions.

The development of digital technology has significantly influenced the advancement of science and various other aspects. The realm of architectural design, both in the professional and educational fields, is not exempt from the influence of digital technology. Despite the fact that some architects still utilize traditional methods, digital technology has shifted traditional methods in architectural design. This writing aims to examine the role of digital technology in the world of architectural design. The method employed in this writing involves a literature review of several related studies. From the conducted review, it can be concluded that digital technology has made the architectural design process more efficient and straightforward. Additionally, with digital technology, architects can explore geometrical forms with high complexity. This is possible because computers nowadays are not merely used as tools to produce drawings or expedite the design process (computerization), but they actively play a role and are integrated into the architectural design process (computation).