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In facing fluctuations in the demand for spare parts at PT. SUN STAR MOTOR SURABAYA to avoid shortages that could disrupt its business operations, the company must ensure it can meet customer demands for specific items or orders. This means the company will lose an opportunity to earn profits. Before applying Safety Stock, Reorder Point, Economic Order Quantity, Maximum Inventory, and Total Inventory Cost, the company frequently faced spare parts stock shortages. To solve this issue, Safety Stock, Reorder Point, Economic Order Quantity, Maximum Inventory, and Total Inventory Cost are applied to determine order quantity, order time, and inventory levels for reordering. The results from inventory calculations can help determine the optimal spare parts needs for the company.

One of the main problems in the productivity of skipjack tuna (Katsuwonus Pelamis) fishing is overfishing which threatens sustainability. This research was conducted to analyze production activities, utilization levels, and their relationship to the sustainability conditions of skipjack tuna (Katsuwonus Pelamis) originating from the WPPNRI 572 waters which are landed at Oceanic fishery Harbor Nizam Zachman Jakarta. Data obtained from the annual report of Oceanic fishery Harbor Nizam Zachman Jakarta for the last ten years, then the data was processed to obtain CpUE, MSY, JTB, and TP data using the 1954 Schaefer model quantitative descriptive method. Based on the research, data was obtained that the production of skipjack tuna originating from WPPNRI 572 and landed at the Oceanic Fishery Harbor Nizam Zachman Jakarta in the last ten years was 366,677.90 tons with a standard effort of 8.644 trips, a CpUE value of 42,42 tons/trip, an MSY value of 39.208,46 tons/trip, and a maximum JTB value. 31.366,77 tons/trip. Based on this data, it was found that the condition of the skipjack tuna resource originating from WPPNRI 572 was in Fully-exploited status with a condition of 94%.

The crazy rich phenomenon as a form of modern materialism and hedonism has poisoned the lives of the young generation of Indonesia in the current millennial era. They have been eroded by worldly pleasures. Tempted by the glamorous and luxurious lifestyle of the crazy rich, they are willing to show off their wealth that is not actually theirs. The purpose of this study is to determine wealth in the Islamic perspective. Qualitative research methods with a descriptive approach are sourced from literature study data. Wealth should be used for social interests, such as through zakat, alms, and fair economic activities. Islam emphasizes the importance of using wealth responsibly to meet basic needs and improve people's welfare, without forgetting simplicity as the main principle. Wealth must be obtained and used in a halal way, not for things that are in vain or violate sharia, and support the values of justice and blessings.

This research aims to analyze the optimization of the issuance of electronic land certificates in Gorontalo City and find out the efforts of the government (BPN) Gorontalo City in optimizing the issuance of electronic land certificates. This type of research is empirical legal research. This method involves a juridical sociological approach, namely an approach that starts from existing legal rules or norms and then harmonizes with the reality that exists in society. The results of this study indicate that the issuance of electronic land certificates (E-Certificate) in Gorontalo city is considered not optimal. Researchers found that there are 3 out of 4 indicators that have not been maximized in its implementation, namely the readiness of land office infrastructure, policy implementation, and public understanding. Furthermore, the efforts that have been made by BPN Gorontalo City in optimizing the issuance of electronic land certificates are conducting Socialization and Education to the Public, Improving Information Technology Infrastructure, Cooperation with Stakeholders, Increasing Human Resources Capacity and Resolving Obstacles and Constraints.

There has been no measurement of potential income tax revenue 21, for taxpayers who are Gojek and Maxim driver partners in Jayapura City. So the purpose of the study, to measure the potential tax revenue of PPh 21 driver partners in Jayapura City. The research approach is quantitative, it is known that the research population is ± 981, the sampling method of variance data technique, the sample size is 203 respondents divided by 82 Gojek respondents and 121 Maxim respondents. Instruments and data collection methods, using a questionnaire there are 11 indicators with 30 statements. Data analysis methods through descriptive statistics: application of minimum, maximum, average, median, besides forming proportions to understand data contributions. Research findings, income PPh 21 Gojek driver partners amounted to IDR.132,140,600,-/year and Maxim IDR.206,459,200,-/year for the potential revenue of Jayapura City Government. The implication of the research is that the Jayapura City Government already has evidence of scientific findings of PPh 21 potential, there is a legal basis for taxation to state that driver partners are taxpayers. So that in the future the policy of extensification of Income PPh 21 will be carried out immediately, to support the contribution of taxes to PAD in Jayapura City.

The phenomenon that occurs in the load lifting system is the need for an efficient and reliable mechanism to move the crane hoist pulley vertically and horizontally. This study aims to design and test a crane hoist system that uses a DC motor and a stepper motor controlled by an L293D motor driver, and to develop an application based on MIT App Inventor to control the movement of the motor. The research method used is integrated hardware and software design, followed by testing the performance of the motor, driver, and the application developed. Testing was carried out under limited load conditions, to measure the motor speed, voltage, and current used at loads of 10 to 100 grams. The results of the study showed that the system can function well at varying speeds, and the motor is able to lift a maximum load of up to 100 grams with a speed that decreases according to the weight of the load. The MIT App Inventor application successfully controls the motor effectively via a WiFi connection with a maximum distance of 10 meters, and loads the operation of the crane vertically and horizontally. This study proves that the designed system is able to work optimally in lifting and moving loads, and the application developed provides easy and efficient control.

Education is widely recognized as a crucial investment with significant economic and social benefits. This study employs a bibliometric approach to analyze trends, influential works, and research patterns related to Return on Education (RoE). Using Google Scholar as the primary data source, publication metadata were retrieved and analyzed with VOSviewer to visualize co-authorship networks, keyword co-occurrences, and citation relationships. The findings indicate an increasing research focus on RoE, particularly in areas concerning economic returns, labor market alignment, and educational policy optimization. The keyword analysis highlights the importance of skill development, policy adaptation, and industry collaboration in maximizing educational returns. Additionally, citation network analysis reveals the most influential studies shaping this field. Despite its contributions, this study acknowledges limitations in data completeness due to Google Scholar’s metadata constraints. The insights derived from this analysis provide valuable guidance for policymakers, educators, and researchers in enhancing the effectiveness of educational investments.

This research aims to explore the use of picture story books in increasing elementary school students' reading interest. The method used is a literature review which involves collecting and analyzing various academic sources related to interest in reading, picture story books, and the effectiveness of learning media. The research results show that picture story books have significant benefits, such as increasing the attractiveness of reading, facilitating understanding, and increasing students' emotional involvement. Not only that, strategies such as interactive reading, discussions and creative activities have proven effective in maximizing the use of picture story books. Even though there are challenges such as limited access to quality books and minimal training for teachers, collaborative efforts between schools, government and parents are needed to improve the culture of literacy among children.

Currently, the Draft Criminal Code has been passed into Law No. 1 Year 2023 on the Criminal Code during the plenary session of the House of Representatives, 6 December 2022. In the New Criminal Code, attempted criminal offence is also reformulated. This research aims to compare the regulation of attempted criminal offence between the Old and New Criminal Code. This research uses normative juridical method. This research found that the differences between the Old and New Criminal Code are:  First, the definition of attempted criminal offence. Second, the criteria on the ‘commencement of execution’ of attempted criminal offence. Third, criminal sanctions. Fourth, the condition that the attempt is not criminalised after the perpetrator has commenced the execution. Fifth, the regulation of ‘qualified attempt’. Sixth, the requirements for attempted criminal offences that are not punishable. While the similarities are: First, both regulate the maximum imprisonment of fifteen years for attempted criminal offences whose principal criminal offence is punishable by death or life imprisonment. Second, both regulate that the additional punishment for attempted criminal offences is the same as the additional punishment for the main criminal offence.

Roads are the main infrastructure that supports human life. When the infrastructure in the form of roads is good, then all community activities, from the economy, transportation, to equitable development can also be realized well. Sepinggan, South Balikpapan District, Balikpapan City is one of the cities in East Kalimantan whose road infrastructure is quite adequate. However, there is a road that does not have maximum lighting at night. Apart from poor visibility and increasing the risk of accidents, it also risks attracting crime. Therefore, members of the Balikpapan University KKN 2024 made street lighting at Posyandu Kusuma RT 58. The street lighting was made with solar power. Solar powered street lighting was chosen to maximize power efficiency. The methods used in these activities are identification, implementation, and achievements or outputs of activities. The people of RT 58 really appreciate the making of solar panel lights carried out by the 2024 Balikpapan University KKN team. The community's activities at night when passing through roads that already have cell panel lights become more optimal and productive.

This study set out to investigate the connection between Nigerian deposit money banks' financial success and their dividend policies. This is accomplished by reviewing existing theoretical and empirical the signaling hypothesis served as the foundation for the study and the creation of literature. The Financial Statements and Annual Reports of 18 (18) Deposit Money Banks in Nigeria for the years 2015–2019 provided the data for this study, which used a longitudinal survey research approach. The arithmetic mean, standard deviation, minimum and maximum values, and the Auto-Regressive Distributed Lag (ARDL) regression technique were used to analyze the data produced for this study using both descriptive and inferential statistics. E-Views version 10 was used to calculate these. The study's conclusions showed that dividend policies had a mixed impact on the financial performance of Nigerian deposit money institutions. However, the dividend pay-out ratio significantly and negatively correlates with financial performance (return on equity), dividend yield has no discernible impact on the financial performance (ROE) of Nigerian deposit money institutions. The greatest African economy is that of Nigeria, which was rated as Determining the percentage of dividend payments that would improve financial performance in terms of return on equity requires management of deposit money banks to have a strong and sound dividend policy in place. They should also put in more effort to raise dividend yield and improve its influence on the financial performance (return on equity) of deposit money banks in Nigeria.

It is absolutely essential to use environmentally friendly fishing gear that complies with the Code of Conduct for Responsibility (CCRF FAO 1995). This is due to the impact of using non-environmentally friendly fishing gear in the form of environmental damage. Competition between fishing gears to get maximum catches raises concerns about overfishing. Therefore, environmentally friendly fishing gear is a reference in the use of technology and fishing gear. Purse seines are a type of fishing gear that is widely operated, this fishing gear is operated with a single vessel or single Purse Seine boat. The aim of this research is to analyze the level of environmental friendliness of purse seines. Data was obtained using the interview method with 30 respondents.

The purpose of this study is to examine how risk management techniques can reduce credit risk and increase liquidity in the Indonesian banking industry. It used quantitative methods and collected information from 130 banking professionals through a survey created on a Likert scale ranging from 1 to 5. The Structural Equation Modeling Partial Least Squares (SEM-PLS 3) approach was used to test the hypothesis. According to research, practicing efficient risk management techniques significantly lowers credit risk while increasing liquidity. The findings of this study emphasize the crucial importance of having a strong risk management framework due to its role in ensuring financial stability and enhancing the performance of the Indonesian banking sector. The conclusion of this study offers strategic benefits to banking institutions and policymakers in maximizing risk management procedures in the face of shifting economic conditions.

This study aims to describe and analyze: positive impacts with negative impacts as a result of Illegal Indonesian Migrant Workers and How Legal Protection in Indonesian Migrant Workers Ilega.  The research is a qualitative descriptive analysis. The data analysis technique uses the technique developed by McNabb (2002), namely Grouping the data according to key constructs, Identifying bases for interpretation, Developing generalizations from the data, Testing Alternative interpretations and Forming and/or refining generalizable theory from case study. The results show that the current migration process, due to its intense dynamics, has a strong social and economic impact. The impact affects almost all sectors of society. In addition, it has an impact on the sending and receiving countries, especially its human resources. Positive and negative impacts of international labor migration on human capital in sending and receiving countries.  Legal protection for Indonesian Migrant Workers has been comprehensively regulated through various laws and regulations, with the aim of providing maximum protection from various aspects. The state ensures protection for Indonesian Migrant Workers in three main stages: before work, during work, and after work. This protection includes administrative, technical, social security, security, as well as complaint assistance and management of work results after returning to Indonesia. The Indonesian Migrant Workers Protection Agency (BP2MI) is a non-ministerial body formed based on Law Number 18 of 2017 and Presidential Regulation Number 90 of 2019 to provide integrated services and protection for Indonesian Migrant Workers. BP2MI has various authorities, including the implementation of policies, services, social security supervision, issuance of recruitment permits, document verification, and coordination of protection during employment. BP2MI is also tasked with managing facilities, rehabilitation, reintegration, and social and economic empowerment for Indonesian Migrant Workers and their families. BP2MI collaborates with various stakeholders from the central government to villages to ensure optimal services and protection for Indonesian Migrant Workers.

The rapid penetration of mobile devices among students has created significant opportunities to optimize mobile-assisted language learning (MALL) for enhancing language acquisition in digital environments. Despite its potential, the implementation of MALL often remains suboptimal due to technical limitations, lack of pedagogical planning, and insufficient integration of interactive features, which limits its effectiveness in supporting structured learning. This study aims to examine how MALL applications influence student engagement, self-regulation, and language learning outcomes, while addressing the gap between technological affordances and instructional practices. Employing a mixed-methods design, the research integrates quantitative surveys, learning analytics, and qualitative interviews with higher education students who regularly use mobile applications for language learning. The methodology includes pre- and post-surveys to measure changes in engagement and self-regulation, log data to track usage patterns, and interviews to capture students’ perceptions and experiences. The findings reveal that MALL significantly enhances engagement through increased active participation, higher attendance, longer study duration, and more frequent interaction with materials. At the same time, MALL improves self-regulation by strengthening skills in time management, goal setting, monitoring progress, and maintaining persistence, leading to greater learner autonomy. Moreover, students with stronger self-regulation capacities were found to utilize MALL features more effectively, resulting in measurable improvements in vocabulary, grammar, and communicative competence. The study concludes that MALL’s effectiveness lies not only in delivering learning content but also in fostering engagement and supporting self-regulated learning. These results highlight the need for pedagogical designs that integrate technological interactivity with scaffolding strategies to maximize the potential of MALL as a learner-centered and sustainable approach to language learning in the digital era.  

This study examines the effectiveness of the Problem-Based Learning (PBL) model in improving critical thinking skills of students of V MIN 2 Sibolga in the Citizenship Education (PKN) class curriculum. The findings of this study are supported by students' critical thinking skills obtained from the results of the KKM exam and the low level of participation in traditional classroom learning. Using a quantitative approach with a quasi-experimental method and a Non-equivalent Control Group design, this study involved 44 students in the control group (conventional) and the experimental group (PBL). The purpose of the research instrument, namely a double test, was to assess students' critical thinking skills before and after the intervention. The results showed a significant increase in the experimental group that implemented the PBL model. The average post-test score of the experimental group reached 87.50, far exceeding the control group which only reached 60.42. Statistical analysis using the paired sample t-test produced a sig. (2-tailed) value of 0.000, which is smaller than α (0.05). This finding indicates a significant positive effect of the application of the PBL model on improving students' critical thinking skills. The results of this study indicate that the PBL model is effective in improving students' critical thinking skills in PKN classes. This model successfully encourages students to actively participate in their education and develop their analytical skills. This study recommends the use of the PBL model not only in PKN education but also in other subject areas to maximize students' growth in critical thinking. The application of the PBL model can be a potential solution to overcome the challenges of improving students' achievement and critical thinking skills at the highest level of elementary school.

Ergonomics is a final result that ergonomics itself wants to achieve. Ergonomics is defined as an effort in the form of science, technology, and art to harmonize equipment, machines, work, systems, organizations and the environment with human abilities, expertise, and limitations so that a healthy, safe, comfortable, efficient and productive condition and environment is achieved, through optimal and maximum functional utilization of the human body (Manuaba, 2000). Home is a basic need for every human being, this is in accordance with the concept of basic human needs, namely clothing, food and shelter. Kitchens built in simple houses generally only meet the requirements for having a kitchen. Even the height of the kitchen work table and the height of the cupboard for equipment vary according to the taste of the carpenter or bricklayer. Thus, safe, comfortable, healthy and efficient working conditions can be achieved. In the case of incompatibility of work tools with body ergonomics, it can be overcome with appropriate technology. Most importantly, from the beginning of kitchen planning, ergonomics must be included so that the working environment and conditions can be made effective and efficient for its users.  

In facing the changes that occur, companies have difficulty following new regulations because of differences with previous regulations. Companies must be able to optimize functions in all parts of the company organization in order to maintain long-term competitiveness and achieve sustainable success. These rules are formed in standard operational procedures which contain operational procedures to ensure consistency, efficiency, minimize errors and safety in every work activity in the company so that it can run effectively and efficiently. This research aims to know the procedures for creating a Work Procedure System at PT Kilang Pertamina International Refinery Unit V Balikpapan and to find out the supporting and inhibiting factors in the procedure for creating a Work Procedure System. This research uses a descriptive qualitative approach. The technique used in this research involved conducting interviews, observation and documentation supported by 2 informants. Based on the results of this research, the procedure for creating a Work System at PT Kilang Pertamina International Refinery Unit V Balikpapan consist of eight structured stages, starting from preparation to the implementation below 1%. The suggestions provided to maximize performance emphasize the importance of effective communication and management commitment to overcoming obstacles in the creation of the Work System at PT Kilang Pertamina International Refinery Unit V Balikpapan.

The House of Representatives of the Republic of Indonesia has adopted various digital communication strategies to maximize the use of social media. One of the strategies implemented is Cyber Public Relations Instagram @dpr_ri seeks to utilize every opportunity provided by social media platforms to deliver accurate, relevant, and interesting information to the public.The purpose of this study is to measure Cyber Public Relations of DPR RI on the @dpr_ri Instagram account, Fulfillment of information needs of followers of the @dpr_ri Instagram account, and How much influence does cyber public relations of DPR RI have on fulfilling the information needs of followers of the @dpr_ri Instagram account. The theories used in this research are Cyber Public Relations Theory, Philips & Young (2009) and Information Needs, Guha (1978). The approach in this study uses a quantitative approach. The method used in this research is a survey. Data collection by providing questionnaires to followers of the @dpr_ri Instagram account. Based on the calculation results of the research data, the tcount value of 5.095 is greater than the ttable value of 1.668. Then H0 is rejected and H1 is accepted. So the results show that there is an influence of cyber public relations of the DPR RI on Fulfilling the Information Needs of Followers of the @dpr_ri Instagram account.There is data from the coefficient of determination showing that the equation is 37.7% while the remaining 62.3% is influenced by other factors outside the study.There is a strong influence between cyber public relations of the DPR RI and Fulfilling the information needs of Followers of the @dpr_ri Instagram account.

X-ray radiation has been widely used in the medical field for both diagnosis and cancer therapy. However, its biological impact on healthy and cancerous tissues remains a major concern in clinical practice. This study aims to evaluate the biological effects of X-ray exposure, including DNA damage mechanisms, cellular responses, and long-term effects on healthy tissues, as well as its effectiveness in killing cancer cells. A meta-analysis was conducted on studies investigating the effects of X-ray radiation on various tissue types. The findings indicate that while X-rays are effective in destroying cancer cells, uncontrolled exposure can lead to genetic mutations and carcinogenesis in healthy tissues. Therefore, the use of X-rays in cancer therapy must consider optimal dosage to maximize therapeutic effects while minimizing risks to healthy tissues.