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Biogas is a potential renewable energy source to meet energy needs, especially in remote areas that do not have access to electricity. The process of making biogas is carried out through anaerobic fermentation of organic materials such as vegetable waste, livestock manure and agricultural waste. This research aims to design a batch type biodigester that can produce biogas from a mixture of goat manure, chicken manure and vegetable waste. Biodigester is a reactor used to produce biogas. The stirred biodigester aims to mix the substrate evenly in the biodigester and prevent the formation of scum. The biodigester designed has a capacity of 120 liters with a stirring system to increase the efficiency of biogas production. The fermentation process was carried out for 21 days by monitoring parameters such as temperature, pH, Chemical Oxygen Demand (COD), and methane gas concentration (CH4). The results showed that the temperature and pH in the biodigester remained in optimal conditions for the activity of methanogenic microorganisms. The highest CH4 concentration measurement was recorded on day 20 at 60%, which indicates good biogas quality. In addition, the flame test on day 21 produced a blue flame, indicating a high CH4 content. The decrease in CH4 concentration at the end of the study was caused by the exhaustion of organic material. This research contributes to the development of efficient and environmentally friendly biodigester technology to produce biogas as a renewable energy source.

This study aims to analyze the effect of return on asset (ROA), current ratio (CR), and company size on the value of companies in the metal and similar industrial sub-sector listed on the Indonesia Stock Exchange during the 2021-2022 period. The research was motivated by the need to understand how financial indicators and company characteristics influence the overall market value of companies in this particular industry. The hypothesis of the study was formulated based on theoretical frameworks and previous empirical research findings. To conduct this study, a purposive sampling method was employed, which involved selecting companies based on certain predetermined criteria. A total of 58 companies from the metal and related sectors were included in the sample. Data for the study was gathered from annual financial reports and analyzed using multiple linear regression techniques to test the proposed hypotheses.The results indicate that company size does not have a significant effect on the company value, suggesting that factors such as financial performance may be more crucial in determining value than the size of the company itself. However, the study found that both return on assets (ROA) and current ratio (CR) have a significant positive impact on company value. These findings emphasize the importance of efficient asset management and liquidity in increasing a company’s market value. This study contributes to a deeper understanding of the financial factors that influence the value of companies in the metal and industrial sectors and provides insights for investors and management.

The purpose of this study is to evaluate the deficiencies in the learning of accounting software at STIE Ganesha. This study will concentrate on factors that potentially hinder the integration of accounting software into the college curriculum. This research started in October 2024. Accounting students at STIE Ganesha are the research subjects. Qualitative research was conducted and data was collected through in-depth interviews. The results showed that learning accounting software has several problems. One of them is the lack of supporting resources and lack of technological infrastructure. In addition, students face difficulties in understanding and accessing accounting software required to meet the needs of the working world. To produce more efficient accounting software learning, this research emphasizes increasing resource capacity and improving supporting infrastructure. This research is expected to help STIE Ganesha develop methods to improve software-based accounting learning

Spentwash, a liquid waste byproduct of bioethanol production, is a potential raw material for biogas production due to its high organic content and abundant availability. PT Energi Agro Nusantara (ENERO) utilizes spentwash through anaerobic digestion processes to produce biogas, which is used as an alternative energy source.However, optimizing biogas production still faces various challenges, including the need for efficient monitoring and increased production volume. Internet of Things (IoT)-based technology offers a solution through real-time monitoring systems, enabling direct and accurate methane level measurements.This study aims to develop a prototype of a stirred digester equipped with an IoT-based methane gas detection sensor, using the MQ-2 sensor to detect methane gas.

The Keuliling Dam has an important role in meeting water supply needs in the surrounding area. After operating for more than 10 years, an evaluation of operation and maintenance performance is required to ensure its continued function. This research aims to analyze the condition of the Keuliling Dam through assessing the condition index for each dam component based on primary and secondary data. The assessment is carried out by providing a condition index value that reflects the level of damage to the safety aspects and environmental performance of the dam. The results of the analysis show that the condition index value for the Keuliling Dam is 4, which is included in the minor damage category. This condition indicates the need for maintenance action to prevent further damage. Based on observations, deposition of material and rubbish is one of the main problems that affects dam performance. This research provides an important basis for managers in determining strategic steps to improve the performance of dam operations and maintenance. The evaluation carried out aims to ensure that the Keuliling Dam can continue to function optimally, support water supply, and minimize the risk of more serious damage. It is hoped that the recommendations from this research can become a reference in managing dams effectively and efficiently.

This study aims to analyze the integration of Artificial Intelligence (AI) into Strategic Human Resource Management (SHRM) and its contribution to enhancing organizational performance using a bibliometric approach. The research method involves analyzing data from Scopus and Crossref databases with the help of VOSviewer software to map research trends, keyword relationships, and publication distributions. The findings reveal that AI plays a significant role in optimizing HR processes, such as data-driven decision-making, productivity enhancement, and more efficient talent management. Key trends include innovations in HR practices, the utilization of big data, and sustainability practices (green HRM). The analysis identifies a significant increase in publications since 2020, reflecting growing academic interest in this topic. This research provides practical significance by helping organizations understand the strategic benefits of AI in addressing HR challenges and driving sustainable performance. The findings of this study are expected to serve as a reference for future research exploring AI implementation across various organizational contexts.

Learning technology continues to develop as time goes by. Technology is the science of tools and skills that make humans work more efficiently. The implementation of daily learning often follows technological developments in the world of education, as do teachers and lecturers. In the field of education, technology has an influence on improving the quality of education, types of educational technology, information technology and communication and learning technology have a major role in learning. The role of technology in the field of education is as an information center and doing new things to illustrate learning and determine online learning methods. With increasingly developing technology, it can also provide benefits that have both good and bad impacts. One of the developments in technology has had a good influence by increasing self-openness in terms of expanding knowledge as information for all life in the world across borders, places and times. Negative impacts include changes in behavior, morals, rules or morals of life so that they conflict with the moral rules that apply in society. Therefore, to prevent the negative impact of using technology in learning, it is necessary to supervise parents and educators who work together in carrying out teaching and supervising children in using technology. The presence and function of technology in the world of education provides the development and growth of human resources as a determinant in achieving success in education. This kind of thing is caused by human resources themselves which are still lagging behind in using this technology in training. With today's technological developments in education, there are many new innovations to support learning. In this case, one way is to provide changes in educational facilities which are increasingly increasing and developing rapidly through technology.

This seminar entitled “The Important Role of Facebook Ads as a Marketing Strategy for MA Darul Arqam Students”, was attended by 32 participants consisting of XII social studies students. The purpose of the seminar was to increase students' understanding of the use of Facebook Ads as an effective marketing tool in business. Problems faced by students include a lack of knowledge about digital marketing and limited access to information regarding marketing strategies. Many students do not understand how to optimally use social media such as Facebook Ads for promotion. The benefits of this seminar include an increased understanding of students in managing digital ads and an understanding of market segmentation. By utilizing Facebook Ads, students are expected to implement modern and efficient marketing strategies, increasing competitiveness in the business world. In addition, the knowledge gained can be used to promote their school products or independent businesses in the future, making them better prepared to face challenges in the digital era.

In the current era of globalization and technology, computers, RFID are examples of information technology tools that are indispensable for meeting human needs in almost every aspect of life, including the management of infrastructure and equipment lending.According to direct research at Widya Praja Ungaran Vocational School, there are only two workers who handle facilities and infrastructure. In carrying out their work assignments, they still experience difficulties. Excess workload and the process of borrowing tools that still lacks a sense of responsibility, so that the results of the work are not maximized.The existence of increasingly sophisticated technology, the management of infrastructure and equipment lending can be done with the help of technological tools that will be implemented in this school. This research aims to make it easier to administer, because this school has not yet added a new workforce.This research can be designed with the help of software (Bootstrap, MySql), programming (PHP, Arduino IDE) and equipment (NodeMCU ESP8266, RFID, LCD, I2C, buzzer, power supply, breadboard, jumper cables, resistors, LEDs) to provide data information. more accurate, effective, efficient and provide a good working atmosphere in this school. It is hoped that this research can reduce work overload and create a sense of responsibility in borrowing equipment, using local networks (wifi / handphone) and computers or laptops, with the research method used is research and development (R&D).

This study investigates the impact of real and accrual earnings management on idiosyncratic risk, with a focus on the moderating role of good corporate governance, proxied by managerial ownership, in manufacturing firms listed on the Indonesia Stock Exchange from 2020 to 2022. Using moderated regression analysis, the findings reveal that both real and accrual earnings management practices negatively affect idiosyncratic risk, suggesting that earnings management may serve as a risk mitigation tool under efficient contracting perspectives. However, managerial ownership exhibits divergent effects: while it strengthens the risk-reducing impact of real earnings management, it unexpectedly amplifies the idiosyncratic risk associated with accrual earnings management, potentially due to managerial motivations to meet financial targets. These results highlight the complex role of corporate governance in earnings management, as it may act as both a stabilizing and risk-amplifying factor depending on the type of earnings management practiced. The study underscores the need for stakeholders to critically evaluate earnings management and corporate governance practices, while encouraging future research to include additional variables to further explain idiosyncratic risk determinants. The study's Adjusted R Square value of 8.1% indicates that other significant factors affecting idiosyncratic risk were not captured in this analysis.

The purpose of this study is to evaluate the deficiencies in the learning of accounting software at STIE Ganesha. This study will concentrate on factors that potentially hinder the integration of accounting software into the college curriculum. This research started in October 2024. Accounting students at STIE Ganesha are the research subjects. Qualitative research was conducted and data was collected through in-depth interviews. The results showed that learning accounting software has several problems. One of them is the lack of supporting resources and lack of technological infrastructure. In addition, students face difficulties in understanding and accessing accounting software required to meet the needs of the working world. To produce more efficient accounting software learning, this research emphasizes increasing resource capacity and improving supporting infrastructure. This research is expected to help STIE Ganesha develop methods to improve software-based accounting learning.

This study aims to analyze the maintenance strategy of railway lines in West Sumatra using the Life Cycle Cost (LCC) approach to determine the most economically efficient and sustainable maintenance option. The main issues raised are the high cost of reactive maintenance and the risk of operational disruption due to track damage. The research method involved collecting construction, operational, and maintenance cost data from railway operators, as well as LCC-based scenario simulations to compare preventive and reactive maintenance strategies. The results of the analysis show that the preventive maintenance strategy results in lower total life cycle costs, compared to the reactive strategy. In addition, the preventive strategy also supports operational sustainability by minimizing the risk of service disruption and improving user safety. SWOT analysis shows that LCC implementation has great potential to improve budget efficiency and support local economic growth, although challenges such as data limitations and natural disaster risks need to be mitigated. This research concludes that an LCC-based approach can be the basis for designing more effective, efficient and sustainable railway maintenance policies. Recommendations include prioritizing preventive maintenance, using monitoring technology, and strengthening supporting policies.

This community service is carried out with the aim of improving marketing skills in using social media or internet media in the Pesantren sub-district community, Mijen district, Semarang. Digital marketing has become crucial for business actors in the digital era, especially small and medium enterprises (SMEs) who want to increase their market share effectively and efficiently. The purpose of this service is to help SMEs in Semarang City understand and implement digital marketing strategies, and digital advertising. Through training and coaching, SMEs learn the importance of producing high-quality content, interacting with customers online, and utilizing analytical data to increase the effectiveness of marketing campaigns. The results of the activity show that SMEs have become more knowledgeable and proficient in handling digital platforms, and that the implementation of recommended strategies has increased engagement and revenue.

Bio-inspired engineering is a rapidly growing field that applies principles found in nature to develop innovative solutions in structural engineering, materials science, and robotics. This paper explores biomimicry in various disciplines, such as self-cleaning surfaces inspired by lotus leaves, energy-efficient building designs modeled after termite mounds, and ultra-lightweight yet durable materials inspired by spider silk. The study highlights the role of computational modeling in replicating biological structures and discusses the challenges of translating natural efficiencies into engineered systems. Additionally, this research examines the environmental impact of bio-inspired materials and their potential to replace conventional, resource-intensive materials in industries such as construction, aerospace, and biomedical engineering.

Education plays a vital role in creating quality, competitive human resources, which is a national priority, including in Indonesia. This study focuses on the effectiveness of managing the committee funds at MTsN 1 Banyuwangi to support educational financing that is not fully covered by the state budget (APBN). Using a qualitative approach through interviews, observations, and documentation, the results show that the management of committee funds has been efficient. In 2021-2022, the received funds amounted to IDR 1,357,610,000, with a realization rate of 93.87%. The following year, committee funds amounted to IDR 1,130,600,000, with 100% realization and a surplus of IDR 33,600,000, which was carried over to 2023-2024. In this period, the received funds amounted to IDR 1,351,125,000, with a proposed budget of IDR 2,080,715,000. As of now, the realization stands at 64.93%, and the management is ongoing as the school year has not yet finished. The committee funds play a crucial role in fulfilling the educational financing needs not fully covered by the national budget and contribute to the improvement of educational quality at MTsN 1 Banyuwangi.

This study aims to describe the implementation of the Deming Model performance management (PDCA cycle) at the Tanjungpinang City Satpol PP office. The type of research used is descriptive research with a qualitative approach, with data obtained through in-depth interviews with Mr. Ray as secretary, and staff involved in daily operations, as well as direct observation. Data analysis uses thematic analysis techniques that include three main steps: data reduction, data presentation, and conclusion drawing. The results showed that the implementation of the PDCA cycle at the Tanjungpinang City Satpol PP office has had a positive impact on improving organizational performance. Through structured stages from planning (Plan), implementation (Do), checking (Check), to corrective action (Act), the Satpol PP Office is able to plan and implement policing programs more effectively and efficiently. However, there are obstacles such as lack of training, budget limitations, and suboptimal coordination between sections. Performance evaluation needs to be improved in terms of more integrated measurement and monitoring. The implications of this study emphasize the importance of coordination and systematic evaluation for continuous improvement.

The purpose of this study is to evaluate the deficiencies in the learning of accounting software at STIE Ganesha. This study will concentrate on factors that potentially hinder the integration of accounting software into the college curriculum. This research started in October 2024. Accounting students at STIE Ganesha are the research subjects. Qualitative research was conducted and data was collected through in-depth interviews. The results showed that learning accounting software has several problems. One of them is the lack of supporting resources and lack of technological infrastructure. In addition, students face difficulties in understanding and accessing accounting software required to meet the needs of the working world. To produce more efficient accounting software learning, this research emphasizes increasing resource capacity and improving supporting infrastructure. This research is expected to help STIE Ganesha develop methods to improve software-based accounting learning.

In today’s date Artificial intelligence (AI) has substantially transformed marketing strategies and specifically Viral Marketing by enhancing the content personalization, targeting the audience and real time campaign optimization. The study explored the Artificial Intelligence impact on Viral marketing with a comprehensive review of 20 literatures that highlights the diverse applications of AI such as predictive analytics, natural language processing (NLP) and AI-driven visual content creation. This study employed meta analysis approach to evaluate how effectively AI could boost marketing reach, engagement and return on investment (ROI). The finding of the study indicates a positive correlation between the efficiency of Viral Marketing campaigns and the integration of AI, despite the fact highlighting ethical and transparency. The study concludes with practical suggestions for using AI in Viral marketing in a responsible and efficient manner to enhance its potential while mitigating related dangers. This study also highlights AI’s revolutionary role in changing market dynamics.

This study aims to analyze the role of library facilities and infrastructure management in improving educational services at SMKN 1 Sangatta Utara. In improving the quality of educational services, the existence of a well-managed library as a center for information and literacy resources is important, which supports the teaching and learning process in schools. Good management of facilities and infrastructure in the library can increase interest in visits and create a conducive learning atmosphere, which ultimately contributes to improving the quality of education. This study uses a qualitative approach with a descriptive design, which collects data through observation, interviews, and documentation at SMKN 1 Sangatta Utara. The results of the study indicate that library facilities and infrastructure management has a very important role in improving the quality of educational services in schools. Efforts made by the library to improve educational services include developing book collections that are relevant to curriculum needs and student interests as well as improving facilities and the quality of library staff. Library management involves the stages of planning, organizing, developing human resources, leadership, controlling, and maintenance to maintain smooth library management and improve the quality of services provided to students. Overall, systematic and student-oriented management has the potential to increase the role of the library as an effective and efficient learning center in supporting the educational process in schools

Managerial mentoring in a collaborative manner is an effective strategy to improve the ability of Madrasah heads in preparing Madrasah Work Plans (RKM). This assistance is carried out through an approach based on cooperation, sharing, and discussion without being patronizing. Through this approach, Madrasah heads feel helped in carrying out their tasks, especially in preparing the RKM which is a reference for Madrasah management. The drafted RKM aims to: (1) achieve predetermined goals, (2) support coordination among stakeholders in Madrasah, (3) ensure consistency between planning, budgeting, implementation, and supervision, (4) optimize community participation, and (5) use resources efficiently, effectively, and sustainably. The results showed that the ability of Madrasah heads in preparing RKM had increased significantly after the assistance. In Cycle I, the average score of the RKM prepared was 74.70, increasing to 81.37 in Cycle II, with an increase of 8.93%. This finding shows that collaborative managerial assistance is effective in improving the competence of Madrasah heads in preparing quality RKM.