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This study aims to determine and analyze the Level of Education, Economic Growth, and Population Density on Quality of Life in Aceh, using a descriptive-quantitative approach in the form of time series data, for 5 years in the form of secondary data selected from the total of Aceh Province. The model used in this study is a multiple linear regression analysis model (Multiple Linear Regression) based on the OLS (Ordinary Least Square) method. Simultaneously, the F test shows that the three independent variables together have a significant effect on quality of life, with a calculated F value = 85.495, sig. = 0.000, and F table = 2.70. The coefficient of determination shows a value of R Square = 0.728, which means that 72.8% of the variation in quality of life can be explained by education level, economic growth and population density, while the rest is influenced by other variables outside the model.

The population density in Surabaya City makes the needs of the community, one of which is transportation, high. Transportation has an important role in meeting the needs of the community in everyday life in the economic, socio-cultural and political fields. Unfortunately, this has led to traffic congestion. Thus, Surabaya City is trying to improve the public transportation system by launching environmentally friendly public transportation as an effort to implement a green economy, namely Suroboyo Bus. This research uses a qualitative method with a library research approach. Information was obtained from various institutional reports, scientific articles, websites, books, and related regulations. The focus of data acquisition sources is credible journal publishers. The results showed that congestion in Surabaya City was reduced due to the enthusiasm of the community to switch to public transportation compared to private vehicles to reduce greenhouse gas emissions. In addition, the Suroboyo Bus payment innovation by exchanging plastic bottles has succeeded in attracting the interest and awareness of some people in Surabaya City to manage plastic bottle waste, although there are still other complaints in the implementation of the policy. The role of Suroboyo Bus as an effort to improve the green economy can be said to be quite successful, but improvements still need to be made and the involvement of the government and the community so that Suroboyo Bus continues to be an environmentally friendly sustainable transportation.

This study analyzes demographic data from regencies/cities in Central Kalimantan Province, including population, population growth rate, population percentage, population density per km², and sex ratio. The results of the analysis show significant differences between regencies/cities, with population growth rates ranging from 0.98% to 1.97% per year. The highest population density was recorded in East Barito, while Lamandau had the lowest density. The sex ratio tends to show a male dominance, with Lamandau having the highest ratio. These findings provide an overview of the challenges and opportunities in development planning, as well as the need to design policies that are in accordance with the demographic characteristics of each region. A deeper understanding of this data is expected to support more effective policies in population management and development in Central Kalimantan.

Effective urban spatial planning is a key element in supporting sustainable urban development. Tangerang, as one of the rapidly growing urban areas, faces significant challenges due to conflicts between increasing population density and the need for green spaces as ecological balancing elements. This study aims to analyze the issues of urban spatial planning in Tangerang, focusing on the factors driving the conflict between population density and the provision of green spaces. A qualitative approach was used, involving secondary data analysis from urban spatial planning documents, government policies, and relevant literature reviews.The findings indicate that high urbanization rates, discrepancies in the implementation of spatial planning policies, and low public awareness of the importance of green spaces are the primary factors exacerbating the problem. Additionally, the lack of green spaces has negative impacts on environmental quality, such as rising urban temperatures, increased flooding, and a decline in residents' quality of life. As a solution, this study recommends integrating spatial planning strategies based on ecological approaches, including optimizing zoning policies, developing vertical gardens in densely populated areas, and enhancing community participation in green space conservation. These findings are expected to contribute to more sustainable urban spatial planning in Tangerang and other cities facing similar challenges.

Bali is a renowned tourist destination that attracts visitors from around the world, particularly for its natural beauty, rich culture, and delicious cuisine. The increasing number of tourists in Bali has driven rapid growth in the culinary industry. In Denpasar City, selecting the right location is a key factor for the success of culinary businesses, as each location has different characteristics and potentials. This study employs the Multiple Attribute Decision Making (MADM) model, combining the Simple Additive Weighting (SAW) and Technique for Orders Preference by Similarity to Ideal Solution (TOPSIS) methods, to determine the optimal location for culinary businesses in Denpasar City. Data were collected through surveys of 154 culinary business owners, considering eight criteria: Accessibility, Visibility, Traffic, Facilities, Expansion, Environment, Competition, and Regulations. The study's findings indicate that both SAW and TOPSIS methods identify high population density areas as the best choice. The SAW and TOPSIS method provides the highest preference value of 0,8815 and 0.7082 respectively, making it the more effective method for recommending optimal culinary locations in Denpasar City.

Dangeu dengue fever or what we often call dengue fever is a disease transmitted by the Aedes aegypti mosquito and caused by the dengue virus. This disease can potentially cause serious complications if it does not receive proper treatment. In this research, the author uses the application of artificial neural networks with the Hebb rule approach to predict the risk level of dengue fever. Predictions are made based on factors such as weather conditions, population density and historical case data that influence this disease. The Hebb rule is used in this research because of its ability to strengthen connections between neurons based on the input patterns they receive, so it is hoped that it can produce more accurate predictions. Test results show that this method has a fairly high level of accuracy in predicting the pattern of dengue fever cases in an area. This research indicates that the application of artificial neural networks with the Hebb rule can be an effective tool for related parties in taking preventive measures to minimize the number of dengue cases in the future.    

Poverty is one of the social problems faced in every region, there are many factors that are thought to affect poverty. This research aims to analyze the factors that influence poverty in Central Java Province in 2023. In this research, the data analysis method used is factor analysis using Principal Componen Analysis (PCA) to evaluate what factors affect poverty. The variables analyzed include the Gini ratio, Life Expectancy Rate (AHH), Labor Force Participation Rate (TPAK), Average Years of Schooling (RLS), Expected Years of Schooling (HLS), population density, households that have access to proper sanitation, and households that have a source of drinking water. In this study, the data characteristics of the 8 variables show that there are significant variations that indicate differences in the level of welfare and quality of life of the community in each region. The data on the factors that allegedly affect poverty in Central Java Province in 2023 fulfill all assumptions. Based on the results of factor analysis, 2 main factors were formed, namely social welfare and socioeconomic conditions, which can explain the origin variable by 65.596%.

Increasing population density and concretization in urban areas, such as Magelang City, have caused a significant decrease in green open spaces (RTH), which has an impact on food security and independence. Magelang City, with a population density of 7,361 people/km², faces a major challenge in providing adequate green spaces to support local food production. Rejowinangun Selatan Village, as one example, shows the limited green open spaces available. To overcome this problem, urban farming, especially through hydroponic techniques, offers an effective solution. The methods applied in this community service include various approaches to educate and directly involve the community in the practice of making hydroponics with solar panels. By utilizing renewable energy-based technology, such as solar panels and integrated electrical systems, hydroponic farming allows food production in limited spaces such as house terraces. This system not only increases food independence and security, but also ensures that the vegetables produced are healthier because of the minimal use of pesticides. Urban farming with the hydroponic method can optimize the use of limited space and become a productive and sustainable alternative for urban communities.

The small number of people cultivating horticultural crops, especially vegetables, means that people can only buy vegetables to meet their vegetable food needs, where the main factor for this is the decline in the area of productive land used as agricultural land and cultivation caused by the growth of population density in Indonesia. Therefore, the solution to the existing problem is to provide openness of insight and assistance in utilizing narrow land for plant cultivation. One way to cultivate plants is by using the vertical cultivation method. In implementing this activity, the aim is for Kalijudan residents to have knowledge about the vertical cultivation system and plastic bottle waste management. The implementation of this activity uses the method of socialization and training activities or direct practice. Where, the target audience in the practice of this activity is elementary school students and Kalijudan residents. From the results of the discussion, it was concluded that this activity is useful because it can introduce residents and change the condition of the Kalijudan sub-district which was originally a narrow land without plants into a narrow but green land. In addition, this vertical cultivation activity also has benefits in reducing plastic waste that accumulates in the Kalijudan environment.

Socialization on the prevention of Dengue Hemorrhagic Fever (DBD) in Kebonadem Village on July 20 2024 aims to increase public awareness about the dangers of DBD and steps to prevent it. The main problem faced is the high risk of dengue fever transmission due to population density and community behavior that does not maintain environmental cleanliness, which supports the breeding of the Aedes aegypti mosquito. The urgency of this outreach is very high considering that dengue fever cases often cause Extraordinary Events (KLB) and the fatal impacts they can have. The results of this outreach show a significant increase in public understanding regarding preventive measures such as the application of 3M Plus (Draining, Covering, Burying and Sprinkling abate powder) as well as the early signs of dengue fever. Active participation in discussions and implementing new habits, such as cleaning water reservoirs, indicates the positive impact of this activity. Despite progress, consistency in implementing prevention habits and ongoing support from various parties is still needed to ensure long-term success. Regular evaluations will help assess the effectiveness of the program and reduce the number of dengue cases in the village, making it an example of success in dengue prevention in other communities.

Surabaya, a city with high population density in East Java, faces challenges in managing land for reforestation. To address this issue, the Surabaya Green and Clean (SGC) Program was introduced, focusing on greening and waste management. One of the proposed solutions is hydroponics, a soilless farming method that can be applied on limited land. On July 28, 2024, community service activities were carried out in Kalijudan Village, Mulyorejo District, Surabaya City, to introduce and increase public knowledge about hydroponics. This activity involved socialization and practical hydroponic planting with the participation of 25 residents. The program consisted of preparation stages, socialization, planting practices, and report preparation. Socialization included exposure to hydroponic theory and practical demonstrations, while each participant received tools and materials for home experiments. The planting method with rockwool has proven effective in supporting plant growth, while the distributed eco-enzyme provided dual benefits by increasing plant growth and reducing household waste. This program successfully introduced hydroponic technology and increased awareness of sustainable urban agriculture. Hopefully, this activity will be the first step in developing hydroponics and creating a greener environment in Surabaya.

As electric vehicles (EVs) gain popularity, understanding the demand for EV charging infrastructure becomes essential for effective urban planning. This paper develops mathematical models to predict EV charging demand based on various factors, including population density, traffic patterns, and energy consumption data. The models provide valuable insights for city planners regarding the optimal placement and capacity of EV charging stations to meet future demand, facilitating the transition to a more sustainable urban environment.

This paper presents an improved SEIR (Susceptible-Exposed-Infectious-Recovered) model to simulate the spread of infectious diseases in urban environments, taking into account environmental factors such as population density, mobility, and air quality. By applying the model to a range of urban case studies, we analyze the impact of each factor on transmission rates and propose strategies for optimal intervention. The results show that cities with higher levels of mobility and pollution experience faster disease spread, which requires targeted health policies.

Economic growth and increasing population density in adulthood require awareness regarding environmental concern. Caring for the environment is an important thing that must be done to prevent natural damage and maintain ecosystem balance. Nganjuk Regency, with a population density of around 1,103,902 people in 2020, of course produces quite a lot of household waste. There is a need to increase awareness and change attitudes regarding waste sorting and processing to create a clean and healthy environment, which is the aim of holding waste bin procurement activities. Seeing that Setren Village SDGs number 12, namely Environmentally Conscious Village Consumption and Production, still has not met the target score that must be achieved, knowledge regarding waste sorting needs to be emphasized more. The method used was direct observation in the Setren Village environment, then a Focus Group Discussion was held regarding handling waste problems to create a healthy environment. The results of the community service carried out are the provision of waste sorting bins and socialization of waste sorting. Apart from that, there has been an increase in knowledge regarding types of waste for the people of Setren Village.

Fires in residential areas usually occur in densely populated areas. Rawa Buaya Village is a sub-district in West Jakarta City which has a fairly high population density and there is also a densely populated settlement located at RT.016/RW.04 with 445 families. This settlement experienced fire disasters five times in 2008, 2009, 2015, and twice in 2022. The aim of the research is to describe community preparedness to reduce the risk of fire as well as factors that support and inhibit community preparedness. This research uses descriptive methods through a qualitative approach. The results of the research show that 40% of the community knows that the cause of fires is due to human negligence, 81% have the desire to prevent fires, 76% have an agreement between the Head of the RT and the community, 74% have determined the evacuation location for victims, 67% do not know the evacuation route board, 91% have the desire to to help their relatives, 62% only knew that a fire simulation had been carried out once, 74% had no early warning system, and 60% had not prepared an emergency fund. So it was concluded that the community was sufficiently prepared to face fires by knowing the causes and things to prevent fires, having an agreement to prepare evacuation locations, helping relatives and participating in disaster simulations, but the vulnerability of the living environment was a factor that triggered fires.  

Population growth that occurred in Tasikmalaya City in 2021 reached 731,606 people. Population density brings a number of problems, namely the problem of waste at the Pancasila TPS. Where the Pancasila TPS becomes a rubbish dump for the people around Pancasila who experience environmental pollution which has an impact on the people who live around the Pancasila TPS. The aim of this research is to determine the adaptation of the community around the TPS. The data collection techniques used in this research took the form of direct observation and interviews with the community around the TPS. The research results revealed that the form of adaptation carried out by the community around the Pancasila TPS was passive. The community can only surrender to environmental pollution around settlements, because the people around the Pancasila TPS are indifferent. Apart from that, the people around the TPS use well water to meet their daily needs. People do not take any action to reduce the pungent odor produced by air pollution because they are used to the smell. Therefore, they do not make changes to their residential buildings to reduce the penetration of odors into the house.

This study aims to explore the influence of the social environment on the communication patterns of adolescents in urban areas. A qualitative approach is used to understand how factors such as family, peers, school environment, social media, local culture, socioeconomic status, globalization, and physical environment influence the way adolescents communicate. Data were collected through in-depth interviews, participatory observation, focus group discussions and case studies. The respondents in this study were 100 respondents from teenagers in Bandung city.The results showed that family has a central role in shaping adolescents' communication skills, with supportive parenting increasing openness and communication effectiveness. Peers also have a significant influence, where adolescents adjust their communication style to gain social acceptance. School environments that support open and participatory communication have been shown to improve adolescents' communication skills, while the use of social media and modern technology changes the mode and frequency of communication, although sometimes reducing face-to-face interactions.Local culture and urbanization introduce adolescents to more modern and dynamic communication styles, while socioeconomic status affects access to education and technology, which in turn affects communication skills. Globalization and exposure to foreign cultures broaden adolescents' communication horizons, allowing interaction with various groups. Finally, the urban physical environment, including public facilities and population density, affects adolescents' interaction and communication patterns.  The findings provide implications for policies and interventions aimed at improving adolescents' communication skills through a holistic approach involving family, school, community, and management of social media use.

One non-organic waste that is used extensively in daily life is plastic, particularly for food packaging vendors and as a raw material for toy manufacturers. Waste will result from the vast amount of plastic that residents of Medan Krio use and discard after consumption. The goal of the research program's implementation is to enable locals to recycle waste materials to create valuable products. The village of Medan Krio Village has a high population density, which has led to the development of waste management issues. The village has traditionally disposed of waste by burning it and throwing it beside the street, which is why there is a garbage stench. which has a strong odor as a result of careless trash dumping. In light of this issue, Ecobricks may offer a way to lessen plastic waste and turn it into products with a positive economic impact. Method: PAR (Participatory Action Research), which is study that identifies issues and then offers potential solutions. Findings: The Ecobrick technique is being used in Medan Krio Village to make use of plastic waste. A recycling technique known as "ecobricks" uses plastic bottles that have been packed full of non-organic materials until they are extremely hard and dense.