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Digital transformation in the public transportation sector is part of the national development priority agenda aimed at improving service quality and operational efficiency. This study aims to analyze the implementation of cashless payment-based digital transformation in public transportation policy on the Suroboyo Bus in Surabaya, analyze service quality based on SERVQUAL dimensions, identify supporting and inhibiting factors for implementation, and evaluate the success and shortcomings of the policy. This research uses a qualitative approach with a descriptive research type. The results show that the implementation of cashless payment on the Suroboyo Bus has been running well since 2018, with four main payment methods: QRIS, e-money cards, plastic waste contributions, and the Child Identity Card (KIA). QRIS has become the dominant payment method with a 48% share in 2025. Service quality based on SERVQUAL dimensions shows good results in the aspects of tangibles, reliability, and responsiveness, but still requires improvement in the dimensions of assurance and empathy. Supporting factors for implementation include government commitment, the availability of regulations (Perwali No. 22 of 2023)., adequate infrastructure, and support from digital payment service providers. Inhibiting factors include limited digital literacy, internet network disruptions, limited economic access, and lack of socialization. The success of the policy is reflected in increased operational efficiency, financial transparency, and a rise in the number of users from 1.2 million (2019). to 3.5 million (2025). Shortcomings of the policy include the digital gap for vulnerable groups, dependence on internet networks, and a decrease in participation in the plastic waste payment program from 25% (2023). to 12% (2025).

A mixed-use building refers to the combination of several different functions in one building, such as residential, office, shopping, and recreational functions built on one site. Designing the structure of a mixed-use building requires careful planning and consideration of various factors such as functional needs, aesthetics, and energy conservation. Additionally, the design of mixed-use buildings includes various functions in one area. The floor slabs and roofs use plain reinforcing steel with a strength of Fy = 240 MPa (Ø8mm). Concrete cover is taken as 20 mm. The design results in several types of slab thicknesses according to the working loads that must be accommodated above them. Below are the moments acting on the floor slabs and roofs. Reinforcement calculations are carried out using the capacity strength design method according to SNI 2847-2019. The concept of capacity design refers to controlling the formation of plastic hinges at predetermined locations. The SAP2000 program can directly calculate the feasibility of structural dimensions and the required reinforcement area from the input program results. In the SAP2000 program, the concrete regulations used are those of the American Concrete Institute ACI-318-05/IBC 2003, which in some aspects differ from Indonesian concrete regulations SNI 2847-20219. Adjustments need to be made to comply with Indonesian regulations. Internal forces from the SAP2000 program are selected from load combinations that produce the maximum field moments and support moments at the column faces. Flexural and shear reinforcement of beams can be directly read from the SAP2000 program output in the form of the required reinforcement area information

This research is part of an effort to solve waste management issues in Sleman Regency, focusing on measuring and evaluating the Zero Waste Index (ZWI) in the Green Open Space (RTH) Denggung, Sleman. The resource substitution method was used to assess the efficiency and potential for waste reduction in the area. Based on field data and calculations using the ZWI formula, it was found that the ZWI value in RTH Denggung is very low, only 0.14, meaning that only about 14% of resources are recovered from the waste management system. This indicates that waste management in the area is not yet optimal, necessitating improvement and innovation efforts. The proposed strategies include enhancing the recycling of plastic, paper, and styrofoam waste, as well as developing composting for food scraps and other organic waste. The implementation of stricter policies related to waste management, public awareness campaigns, and the integration of zero waste initiatives are expected to improve the ZWI value. This effort is hoped to be part of the solution to waste management in Indonesia and serve as a best practice example for waste management in RTH or other public spaces..

Soil has a very important role in construction, namely in buildings, roads, bridges, dams and other buildings, so soil with adequate technical properties is needed. Work will encounter difficulties if you encounter soil that has large shrinkage characteristics, this causes damage to the building standing on it. To improve the properties of peat soil in the field of civil engineering, soil stabilization is carried out. Soil stabilization is in principle to improve the quality of soil that is not good, or improve the quality of soil that is actually already classified as good. The characteristics of peat soil include: high organic content, easy degradation when exposed to water, and if the soil experiences dryness the soil shrinks. The liquid limit of the original soil was 63.505% and when the lime mixture was added it became 61.46% in a mixture of 5% lime, 53.47% in a mixture of 10% lime, 49.30% in a mixture of 15% lime, and 28.55% in a mixture of lime 20%. The plastic limit of the original soil was 24.03% and when the Gypsum lime mixture was added it became 29.16% in a mixture of 5% lime, 31.11% in a mixture of 10% lime, 34.15% in a mixture of 15% lime, and 36.14% in a 20% lime mixture. As the Plastic Limit value increases and the Liquid Limit value decreases in the soil, the plasticity index of the soil decreases and the cohesive properties of the soil decrease.

This research aims to describe the environmental awareness behavior of students at SMPN 3 Jakarta. The study utilizes a descriptive research method with data collection techniques including questionnaires, interviews, observations, and literature review. Data analysis techniques employed are data reduction, data presentation, conclusion drawing, and verification. Based on the research findings, students' environmental awareness behavior at SMPN 3 Jakarta is measured through eight indicators: environmental care with a percentage of 38% in the low category, reduction of plastic waste with 33% in the moderate category, waste management with 35% in the moderate category, carbon emission reduction with 40% in the high category, energy conservation with 28% in the moderate category, tree planting with 47% in the moderate category, reuse of items with 47% in the moderate category, and protection of flora and fauna with 38% in the moderate category. The results indicate that many students do not show concern for the environment. This can be seen in behaviors such as indiscriminate littering (e.g., under desks or chairs), unauthorized removal of plants or fruits, and lack of participation in school cleanliness programs such as weekly cleaning activities and duty schedules. Reasons cited include students' laziness to clean classrooms and reliance on peers.

The activity of dismantling shale sometimes does not align with the rating of the shale itself. Although shale generally has low durability, some types of shale exhibit considerable strength. Therefore, if the tools used are not suitable, the excavation process becomes inefficient. One shale classification method proposed by Franklin (1982) is by determining the value of slake durability index, plasticity index, and point load index. If the slake durability value exceeds 80 percent, testing continues with point load testing. However, if the slake durability value is below 80 percent, then liquid limit and plastic limit tests are conducted to obtain its plasticity index. This study is applied to the Kampungbaru Formation at PT Bintang Prima Energi Pratama. The shale testing results of the Kampung Baru Formation at PT Bintang Prima Energi yielded slake durability index values below 80 percent, thus the shale ratings based on slake durability index and plasticity index values, for KB1BL1 are 4.2; KB1BL2: 3.5; KB1BL3: 2.55; KB1BL4: 3.35; KB1BL5: 3.15; and KB1BL6: 3.65. With an average shale rating value of 3.57. The excavation tool used for these rocks is a backhoe.

The residents of RW 05 Jomblang, Candisari District, Semarang City, are increasingly concerned about the impact of plastic waste on the environment. As a solution, used plastic bottles are being utilized as planting media in hydroponic techniques by MBKM students from various universities, such as UPN "Veteran" East Java, Padjadjaran University, and Semarang State University. This utilization of plastic bottles reduces waste while supporting sustainable agriculture by minimizing the use of land and water. The program raises community awareness about eco-friendly urban farming, focusing on water efficiency and quick harvesting processes. Education includes basic hydroponic techniques and their implementation using used bottles, which has been met with active community participation. Evaluations show tangible results, such as pakcoy plants being distributed to participants. Discussions with the RW 05 Chairman reveal significant benefits for the community in utilizing used items for agriculture. This program strengthens the community and suggests further development to enhance local food security and environmental awareness, as well as motivate the adoption of modern agricultural technologies

Plastic waste is a global problem that is increasing every year because it is difficult to decompose. This article discusses the growth in waste volume in Indonesia which is triggered by population growth, urbanization, and changes in consumption patterns, as well as the main challenges in waste management at the Bantargebang TPST. Through a qualitative approach and case studies, this article highlights the need for a comprehensive approach to waste management, including the establishment of waste banks and increasing public awareness. The main challenges at the Bantargebang TPST include decreasing capacity and difficulties in handling single-use plastic waste. The proposed solutions include expanding TPST capacity, implementing environmentally friendly technology, increasing public awareness, developing adequate infrastructure, and greater funding allocation. Collaboration between the government, the private sector and the community is the key to overcoming this challenge and building a sustainable and environmentally friendly waste management system at the Bantargebang TPST.

The aim of the research is to determine the effect of simultaneous and partial training and career development on employee performance at Plastic Shops in Sleman Regency. Efforts to realize optimal performance from an employee, of course, require training and career development programs so that there are no significant gaps in goals, measures and assessments. This research uses multiple linear data analysis methods using primary data obtained from questionnaires. The sample and research amounted to 21 people. The research results show that, with a t-value of 2.975 and a significant t-test value of 0.008 <0.05, training has an effect on employee performance. In the simultaneous test the F-count value was 20.740 with a significance of 0.000. Because the significance is less than 0.05, it can be concluded that training and development has a positive and simultaneous effect on employee performance at Plastic Shops in Sleman Regency.

This research discusses the implementation of supply chain management at PT. Yakult Indonesia Persada, Mojokerto, East Java branch. This research uses a literature study analysis method or literature review with secondary data sources. This research explains the main role in supply chain management implemented by PT. Yakult Indonesia Persada starts from suppliers, production processes, retail, distributors, to consumers. PT. Yakult Indonesia Persada collaborates with several local and foreign suppliers to obtain main raw materials such as skim milk powder from Australia and New Zealand, sucrose and dextrose from Cirebon, packaging materials, namely polystyrene plastic ore, from China. The production process is carried out using sophisticated high-tech machines and is carried out by competent human resources (HR) to create standardized products, distribution is carried out by PT. Yakult Indonesia Persada, namely by using land and sea routes with two distribution systems, namely direct sale distribution which is carried out using backup cars to be distributed to traditional shops such as food stalls to modern shops such as supermarkets, and yakult lady, namely distribution carried out by women who has been equipped with knowledge about Yakult products to disseminate information to consumers using motorbikes or bicycles. With this distribution system, it has proven to be quite good, as proven by PT. Yakult Indonesia Persada has regular consumers spread throughout almost all of Indonesia.  

Waste is one of the biggest environmental problems in Indonesia. Based on data from the 2014 Central Statistics Agency (in Angga & Djunaidi, 2017) it shows that Indonesia produces around 187.2 million tons of waste / year and is in second place as the largest waste producer in the world. Waste not only comes from households but also from the school environment. If this waste is left unchecked, it can cause disease. This large amount of waste is also caused by people's lack of concern for the environment. Therefore, it requires an appropriate management strategy, one of which is through recycling. The waste recycling training aims to increase knowledge of dealing with plastic waste and develop the creativity of Purwakarta State Primary School teachers so that they are able to process waste into learning media as well as capital for students to understand learning more easily through waste recycling training. Implementation methods include environmental observation, problem identification, determining service activities, coordinating service activities with prospective participants, implementing training. The waste recycling training activity has been successful and running smoothly, able to develop creativity and increase teachers' knowledge regarding waste managent.

Established since 1916, PT. Pabrik Es Siantar is the oldest factory of Pematangsiantar. This study is aimed to determine what strategy are used by PT. Pabrik Es Siantar in maintaining the existence of ‘Cap Badak’ products; to know the strategy implementation, evaluation; and also its obstacles. Afterwards, this study analyzes the alternative strategy that possibly recommended to PT. Pabrik Es Siantar for supporting the existing strategy. The research method used is descriptive-qualitative, using case study. Data were collected by interviews, observation, and documentation. Data analysis techniques used were qualitative-descriptive analysis of Miles and Huberman and also SWOT Analysis using SWOT Matrix, IFE Matrix, EFE Matrix, and then matching the alternative strategies obtained on SWOT Diagram. The results showed that in maintaining the existence of Cap Badak products, PT. Pabrik Es Siantar uses Defense Strategy. The strategy implementation and evaluation has been done properly without changing any standards. The obstacles is they still using their conventional machines because the owner does not intend to regenerate the machines, and the production becomes less and hampered because many bottles are not returned to the factory yet. Furthermore, based on IFE Matrix, EFE Matrix, and SWOT Diagram, the results showed that PT. Pabrik Es Siantar is in Quadrant I, where the company’s position is very profitable and supports aggressive strategies. Based on SWOT Matrix Analysis, PT. Pabrik Es Siantar is recommended to launch Cap Badak products in plastic bottle packaging immediately, do promotion after regenerating machines, educate consumers about the importance of returning bottles on time, purchase orders bottles more often, and change the family management system into a more professional system.

The purpose of this study on the Role of Green Economy in Encouraging Entrepreneurial Innovation of MSME’s Selling Coconut Ice is to find out how to classify waste that can be processed into something that can be reused and waste that cannot be processed. Coconut ice sellers sometimes do not know how coconut waste can be processed into something that has economic value. Therefore, coconut ice sellers only sell coconut to be made into coconut ice with various variants by providing innovative flavors other than original such as palm sugar flavors, or using flavored syrups. With so many coconut ice sellers today, there is a large amount of coconut waste generated every day. Materials that sometimes cause waste in MSME entrepreneurs selling coconut ice are waste that is not used or discarded such as coconut shells, coconut fibers, syrup bottles, milk cans, and plastic (other waste). This is a problem for traders who have difficulty distributing waste so that it can be processed into something that can be used or useful and has economic value for waste that is reprocessed. To emphasize the environmentally friendly aspects of coconut waste and can increase the attractiveness for consumers to care about their environment regarding the waste. So from the conclusion of this research can emphasize, how important the green economy is in encouraging innovation regarding entrepreneurship in MSME’s for coconut ice sellers.

Teachers are a big influence in cultivating the success of students' insight and attitudes. The guidance given by teachers also needs to be given to the values of caring for the environment. The character of caring for the environment does not only come from intuition and talent, but also comes from habits and an educational process that cares about the environment. A concrete manifestation provided by the government in cultivating the character of caring for the environment through the Adiwiyata Program in schools. The predicate of Adiwiyata is Mandiri and is an example of a school to be coached by other schools, so to find out more the researcher wants to conduct research on the role of teachers in cultivating environmentally caring character through the Adiwiyata program. The aim of this research is to (1) find out the role of social studies teachers in forming character caring for the environment at SMPN 1 Wlingi (2) knowing the form of character that cares for the environment in students at SMPN 1 Wlingi. This research uses a qualitative approach and an intrinsic case study type of research. Data collection techniques through observation, interviews and documentation. Checking data validity through technical triangulation and confirmability. The data analysis technique for this research is the Miles and Huberman technique through data reduction, data presentation, drawing conclusions. The results of this research are 1) The Role of Social Studies Teachers in Forming Environmentally Caring Characters a) Curriculum that is integrated with the environment, in the form of lesson plans/teaching modules that are integrated with material about the environment b) Participatory activities, in the form of the habit of cleaning the environment every morning, with guidance teachers, and insight through activities from learning materials. 2) Forming environmentally caring character through the Adiwiyata Program at SMPN 1 Wlingi in the form of an independent attitude and sense of responsibility possessed by students which is proven by the many activities that support the Adiwiyata Program, such as picket activities every morning and after school, clean Fridays, competitions cleanliness of the class, several activities integrated with learning materials in the form of making vlogs. and in general, SMPN 1 Wlingi implements minimizing plastic waste through the attitude of students by bringing provisions or drink bottles from home.

This research aims to investigate the effect of instilling character education through our school's waste reduction program "kurasaki" and what impact it had on students before and after this program was implemented. The research method used was a qualitative method and data collection was carried out through face-to-face interviews with students and teachers.  We chose the location at SMPN 3 Cisoka, Tangerang Banten Regency because the school implements the Irakaki program which can change the character of students to be disciplined, empathetic and caring for the surrounding environment.

The issue of plastic bags continues to be a significant topic globally in waste management. Their relatively low cost, ease of use, and accessibility have made plastic bags an integral part of human life. With increasing plastic bag usage, inevitably comes an increase in plastic waste. Moreover, the rapid usage cycle of plastic bags, as they are typically single-use items used only temporarily, exacerbates the problem. If plastic waste is not optimally managed, it will have negative environmental impacts. To address this, the retail company Alfamart has begun employing green marketing strategies to promote the "Plastic Bag Diet" by offering environmentally friendly shopping bag products (Eco Bags). This aims to raise awareness and concern among the public for environmental sustainability by reducing plastic bag usage during shopping. Apart from Alfamart, other competing retail companies have also adopted similar strategies and offer eco-friendly bag products. The intensifying competition among retail companies forces managers to reconsider their strategies to win market share. The issuance of the Bali Provincial Regulation on Limiting Single-Use Plastic Waste is based on Article 12 paragraph (3) and Article 13 paragraph (2) of Bali Provincial Regulation Number 5 Year 2011 concerning Waste Management. This reflects the negative impacts that can arise if waste is not properly managed. The enactment of local regulations prohibiting the use of single-use plastic indicates a legal policy direction towards environmental conservation. The research method used in this study is a juridical normative method with a literature review approach, focusing on legal norms including principles, norms, rules, regulations, agreements, and doctrines. Therefore, this study aims to analyze the effects of green marketing on attracting purchasing interest and persuading the public to make purchasing decisions on Eco Bag products at Alfamart as alternatives to plastic bags.

The first stimulation of creativity in early childhood is so that children can express themselves creatively. Second, they can think creatively as an ability to resolve conflicts or solve problems. Third, independent creative practices give someone pleasure to produce useful goods. Fourth, creativity to improve the standard of living and norms of life. KB ONSIF which is still located in the village office of hamlet I, Onozitoli Sifafo village is a supporting factor for the large number of loose parts materials available, educators change the environmental conditions that are full of drinking bottles, paper and cardboard scattered around the building into educational play media for children. This conversion power can not only be used as a learning medium, but can also create cleanliness in the environment around the school. Loose parts are objects that are easily found in our environment, such as twigs, shells, used plastic packaging, plastic bottles, cardboard, metal, cloth, etc. These materials can be obtained by teachers and parents anywhere without spending money. The purpose of this study was to see the use of loose parts media in stimulating children. The research method used was descriptive qualitative by obtaining data from the results of observations, interviews and documentation. The research results obtained through loose parts media learning activities are able to stimulate children's creativity, as evidenced by the results of children's work based on children's imagination without the help of teachers.

The problem of plastic waste in Indonesia is increasingly urgent as plastic consumption increases and sustainable management is lacking. This research aims to explore the potential of utilising plastic bottle waste as a creative and environmentally friendly product in the form of "ReBloom" pencil case. This research uses a descriptive quantitative approach, which collects data from respondents aged 18-25 years old in Surabaya to measure perceptions and interest in recycled products. The study results show that the majority of respondents are interested in environmentally friendly products at an affordable price. The business feasibility analysis revealed that ReBloom has a positive economic outlook with a break-even point that can be achieved within a certain production quantity. Besides contributing to the reduction of plastic waste, the product also raises public awareness of the importance of recycling and circular economy. Digital marketing strategies and collaboration with communities are proposed to increase market acceptance. This research confirms that sustainability-based innovation can be a promising business opportunity while contributing to environmental preservation.

The growth of blockchain technology has created significant demand for Solidity developers, especially in the development of smart contracts. This research presents the latest data regarding the surge in job vacancies for Solidity Blockchain Developers in Indonesia, highlighting more than 5,000 vacancies in October 2022 according to Tech in Asia. Meanwhile, a report from the United Nations Environment Agency (UNEP) confirms the escalation of the global plastic waste and waste problem. With more than 380 million tons of plastic waste generated every year, and only a small portion being recycled, plastic waste poses a serious threat to marine and terrestrial ecosystems. In addition, the impact of climate change is increasing with methane produced from organic waste in conventional landfills.

17 August 1945, University Surabaya has expanded its limited green space and educated students and the community about plant development without planting material, or it is referred to as contemporary farming by using the rooftop area on the third level of the Engineering Building (Q) for hydroponic plant cultivation. Using the PDCA (Plan, Do, Check, Action) method, one may improve the productivity of plants in hydroponic farming. The NFT (Nutrient Film Technique) system, which consists of three pipes stacked in parallel places, is used in the design of the hydroponic growing system. Rockwool, flannel cloth, plastic cups, nutrients, and a pH or TDS (Total Dissolved Solid) measuring device are among the equipment and supplies utilized. Choosing plants that can be used on small amounts of land are.