In carrying out economic development in Indonesia, it has an impact on the rampant environmental damage which means the rampant environmental crimes that occur in Indonesia. Basically, these development activities contain the risk of environmental pollution and damage. Lack of supervision of environmental management permits by authorized agencies, law enforcement officers who are less than optimal in enforcing environmental law and weak criminal sanctions and compensation applied to business actors who violate, cause a lack of deterrent effect on business actors who violate. In addition, the desire of business actors who only prioritize profit and do not care about environmental recovery by ignoring the management of solid waste of Hazardous and Toxic Materials (B3) which can have a fatal impact on the environment. Management of hazardous and toxic waste (B3) in Indonesia is guided by Government Regulation Number 101 of 2014 concerning Management of Hazardous and Toxic Waste (B3) and Law Number 32 of 2009 concerning Environmental Protection and Management. B3 waste is a waste or waste whose nature and concentration contain toxic and hazardous substances so that directly or indirectly it can damage the environment, disrupt health, and threaten the survival of humans and other organisms. B3 waste is not only produced from industrial activities but household activities can produce several types of this waste. The method used is normative legal research by examining the regulations and laws that regulate it. This study aims to determine the relationship between positive legal regulations and the problem of B3 waste and how to overcome this B3 waste so that the environment is maintained.
 
 

Kartu Indonesia Pintar Kuliah (KIP-K) is a scholarship given by the government to high school graduates and equivalent who excel but have economic limitations to continue their studies at university level, both at state and private universities. The Indonesian government has issued the KIP-K since 2020 as a form of educational assistance. In North Maluku Province, especially on Sula Island, there is still minimal information regarding KIP-K. This service activity aims to share information regarding the benefits of higher education and how to obtain a KIP-K scholarship for students who have financial limitations. This community service is carried out at SMAN 1 Kepulauan Sula, MAN 1 Kepulauan Sula, SMAN 7 Kepulauan Sula, SMAN 9 Kepulauan Sula and SMAN 11 Kepulauan Sula. This activity was carried out in two stages, namely socialization and mentoring. The implementation of this activity went well, smoothly and was full of enthusiasm from the participants, especially students who wanted to continue their studies at university level. The final result of this socialization and mentoring is that the participants have succeeded in creating their own accounts, filling in data and registering for KIP-K.

Stock Return is the rate of return in the form of profits or losses received by investors during certain periods. The aim of this research is to determine the influence of market risk, business risk, financial risk, profitability (ROA) on stock returns both partially and simultaneously in automotive companies. listed on the Indonesian Stock Exchange. This research uses a purposive sampling method as a way to select samples, resulting in 15 companies that meet several research criteria, namely: Automotive companies listed on the Indonesia Stock Exchange for the 2021-2023 period. Automotive companies that always report complete financial reports for the 2021-2023 period. Automotive companies that have profits during the 2021-2023 period. The data analysis methods used are normality test, multicollinearity test, heteroscedasticity test, autocorrelation test, multiple linear regression analysis, coefficient of determination test (R2), F test, and T test. The data used in this research is secondary data originating from reports. company annual financials. The data analysis technique used is descriptive statistical analysis and multiple linear analysis using the SPSS version 29.0 program. The results of this research are that market risk, financial risk, and profitability (ROA) have a negative effect on stock returns. Meanwhile, business risk has a positive effect on stock returns.

This research examines the influence of the school environment on students' learning processes within the context of educational psychology. The school environment, including physical factors such as noise, lighting, and classroom conditions, as well as social factors like student-teacher interactions, significantly impacts the quality of learning. These factors can affect students' concentration, motivation, and academic performance. In educational psychology, a conducive environment has been proven to support effective learning and improve educational outcomes. This study aims to identify school environment aspects that influence the learning process and provide recommendations for creating optimal conditions for both academic and psychological development of students.

Security systems in the maritime sector are crucial for preventing criminal activities and theft on board ships. The physical key systems commonly used today have vulnerabilities that can be exploited by unauthorized individuals. This research aims to design and test a smart door lock system using facial recognition with the ESP32 Wrover cam and a 4x4 Keypad as an additional security measure. The test results show that the system successfully recognizes faces with a 90% success rate at a distance of 15-100 cm, although there is a decrease in efficiency when more than one face is registered. The system also demonstrated 100% success in

Using plant-based pesticides is a good step for agriculture that is more environmentally friendly than chemical pesticides. Vegetable pesticides are more natural and safer for the environment than chemical pesticides because they are made from natural ingredients. The impacts that will be felt if the use of chemical pesticides continues will have an impact on animals and humans. Chemical pesticides have the most significant effect, namely causing the death of several other animals besides organisms. In addition, exposure to chemical pesticides also has significant effects on human health. Achievements in this community service can increase knowledge about pest control by using vegetable pesticides from onion skins which can be used as natural pesticides and the community can switch from using chemical pesticides to vegetable pesticides which are more environmentally friendly.

Indonesia's population reached 282,477,584 in 2024, presenting significant challenges in waste management, especially in densely populated areas. In Sidoarjo, the waste volume amounts to 598 tons per day, with a recycling rate of only 7-9%. The Kuliah Kerja Nyata Tematik (KKN-T) program in Bluru Kidul village aims to enhance waste management through the promotion of anaerobic composters, which convert organic waste into compost. This community service initiative involves identifying issues, observing conditions, formulating solutions, and educating on the importance of household waste management, particularly organic waste, for producing useful plant fertilizer. This outreach session provided residents of Desa Bluru Kidul with new understanding and skills to utilize used gallon containers as anaerobic composters and organic waste as raw material for oxygen-free compost, thereby supporting Sustainable Development Goal (SDG) 12, which focuses on environmentally conscious consumption and production in villages

The primary function of mobile robots is to transport various loads, including their own weight and additional cargo. Ensuring adequate torque in the wheel motors is crucial for effective load-bearing and movement. This study investigates the load-carrying capabilities of the TT DC gearbox motor, a popular and cost-effective choice for small robots. A mobile robot equipped with four TT DC gearbox motors and employing skid steering locomotion was constructed for this purpose. The robot featured a container designed to carry sand, and its load capacity was tested by gradually increasing the weight until the robot could no longer move. Experimental results showed that the maximum load the robot could carry on a flat surface was 4000 grams, which corresponds to 1000 grams per 5 cm diameter wheel, driven by a stall torque of 0.08336 Nm (0.85 kg.cm). This finding is consistent with the motor's specified stall torque of 0.8 kg.cm at 6V. These results suggest that the maximum load of a mobile robot can be predicted using the motor's stall torque specification and the wheel radius through the total tractive effort (TTE) formula. This study offers valuable insights into estimating the performance limits of DC gearbox motors used in driving mobile robots.

Penelitian ini membahas mengenai perjanjian sewa menyewa rumah tanpa jangka waktu sewa yang menjadi batal demi hukum. Akibat kebatalan tersebut tidak serta merta mengakibatkan para pihak harus mengembalikan ke kondisi semula oleh sebab hubungan sewa menyewa yang terjadi masih didasarkan pada suatu perikatan alam. Untuk menemukan jawaban dalam penelitian ini digunakan metode penelitian yuridis normatif. Hasil penelitian menemukan bahwa jangka waktu sewa merupakan unsur essensialia yang menjadi syarat objektif dalam sahnya suatu perjanjian sewa menyewa rumah sebagaimana diatur dalam Undang-Undang Nomor 1 Tahun 2011 tentang Perumahan dan Kawasan Permukiman Jo. Pasal 28 ayat (5) Peraturan Pemerintah Nomor 14 Tahun 2016 tentang Penyelenggaraan Perumahan dan Kawasan Permukiman sebagaimana diubah terakhir dengan Peraturan Pemerintah Nomor 12 Tahun 2021 sehingga tanpa pengaturan jangka waktu sewa perjanjian tersebut menjadi batal demi hukum, namun uang sewa yang sudah diterima oleh pemberi sewa tidak perlu dikembalikan oleh karena hubungan sewa menyewa yang selama ini dilakukan didasarkan pada perikatan alam.

The high pedestrian activity and traffic flow in the education area on Jalan Raya Abepura-Sentani Jayapura City led to the provision of Pedestrian Bridges (JPO) in two locations, namely in front of the Cenderawasih University Auditorium (JPO-1) and in front of SMP YPPK Santu Paulus (JPO-2). This research was conducted to determine the suitability of the physical geometric standards of the pedestrian bridge and its level of effectiveness, as well as factors that affect pedestrian satisfaction in using the two Pedestrian Bridge (JPO) facilities. Geometric analysis was carried out using the standard of Pedestrian Bridge Planning Procedures for Urban Pedestrians (1995) and Technical Planning of Pedestrian Facilities (2023), calculation of the level of effectiveness using the volume of crossings, and analysis of service satisfaction using the Importance Performance Analysis (IPA) method. The results found that the condition of JPO-2 is better and meets the standards because it uses a slope that can be used by people with disabilities, while the slope on the steps of JPO-1 is too steep (40°) and narrow with a width of 1.4 meters, so the effectiveness level of JPO-2 is higher (67%) than JPO-1 (52%). Factors affecting user satisfaction are aspects of comfort, safety, and security.  The main obstacles in using the pedestrian bridge are dirty conditions, no lighting, the presence of people under the influence of alcohol or extortionists, and damage to the Pedestrian Bridge (JPO) facilities.