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This research seeks to define polycyclic aromatic compounds, which are chemical compounds consisting of fused aromatic rings that do not contain heteroatoms or substituents. Many of these compounds are known to be carcinogenic and are primarily produced through the incomplete combustion of carbon-containing fuels such as wood, coal, diesel, grease, and tobacco. Pure polycyclic aromatic compounds generally appear as colorless, white, or pale green solids that often develop a yellowish tint over time. These substances are commonly found in coal tar, crude oil, creosote, and tar deposits in industrial and urban environments. Despite their widespread occurrence and potential health risks, only a limited number of polycyclic aromatic compounds are utilized in industrial applications, including the manufacture of medicines, dyes, plastics, and pesticides. Furthermore, this research examines the distribution, persistence, and accumulation of these compounds in the environment, as well as their toxicological effects on human health, ecosystems, and long-term environmental sustainability.

Waste management remains one of the major challenges in urban areas, including Rungkut Menanggal Subdistrict, Surabaya. Although two active waste banks already exist, community participation and the optimization of social and material assets remain limited. This community empowerment program aims to optimize local potential through the strengthening of social and material assets based on waste bank activities using the Asset-Based Community Development (ABCD) approach. This approach emphasizes the utilization of existing community strengths and resources to create sustainable social transformation. The program was carried out through five participatory stages: discover, dream, design, define, and destiny. The results show a significant improvement in the community’s capacity for household waste management. Residents were able to process approximately 100 kg of organic waste into compost and create creative products such as decorative bags made from plastic waste. Moreover, collaboration among local institutions such as Karang Taruna Arkidli, PKK, Posga Venus, Posga Bumi, and KSH increased, strengthening collective action in environmental management. This program demonstrates that the ABCD approach effectively enhances social capital, increases community participation, and generates both economic and environmental benefits. Waste bank management based on local asset empowerment can serve as a model for inclusive and adaptive community development in urban environmental contexts.

Negative Binomial Regression is a statistical modeling approach used to analyze count data with overdispersion, where the variance exceeds the mean. This study applies the method to examine the influence of weather factors on the daily number of cyclists crossing the Williamsburg Bridge in New York City. The independent variables used in the analysis include maximum temperature, minimum temperature, and precipitation. The dataset was obtained from the NYC Department of Transportation through the Kaggle platform and covers the period from April 1 to April 30, 2016. The analysis began with a Poisson Regression model; however, the presence of overdispersion was identified, indicated by a high AIC value of 8598.19, suggesting that the model was not suitable. The alternative Negative Binomial Regression model was then employed and produced a significantly lower AIC value of 518.77, demonstrating a superior fit. The findings indicate that maximum temperature has a positive effect on the number of cyclists, while precipitation shows a significant negative effect. Conversely, minimum temperature does not exhibit a meaningful influence. These results highlight the importance of considering weather conditions when planning bicycle-based transportation systems and support the development of sustainable mobility strategies in urban environments.

The purpose of this study is to evaluate income inequality and poverty as key indicators of uneven economic development in North Sumatra Province in 2024. This study analyzed various secondary sources, including BPS reports, SINTA-indexed national journals, and regional economic policy publications. The results show that regencies in the west coast and mountainous regions of North Sumatra tend to be lagging behind, while urban areas such as Medan and Deli Serdang have the highest concentration of economic growth, meaning that income inequality remains at a moderate-high level. The finding that economic progress remains uneven is reinforced by the fact that the poverty rate remains higher than the national average. From the results of this study, not only economic factors influence inequality and poverty, but also structural factors such as infrastructure access, human labor quality, and regional fiscal inequality. Therefore, more inclusive and integrated policies are needed to address inequality and improve welfare across all provinces.

This study aims to analyze the effectiveness of Maxim online motorcycle taxi services for students of MAN 4 Pekanbaru City in meeting their daily mobility needs. The location of MAN 4 Pekanbaru City on Jalan Yos Sudarso, one of the routes with a fairly high intensity of large vehicle activity, demands the availability of transportation services that can provide certainty of time, comfort, and safety for students. In this context, the existence of online motorcycle taxis is a relevant transportation alternative in today's digital era. This study uses a descriptive qualitative approach with the aim of describing in depth the experiences, perceptions, and assessments of students' assessments of the quality of Maxim online motorcycle taxi services. Data collection techniques were carried out through interviews with several students of MAN 4 Pekanbaru City who actively use the service in their daily activities, especially for going to and from school. The results of the study indicate that Maxim online motorcycle taxi services are considered quite effective in supporting student mobility, especially in terms of ease of access, time efficiency, and relatively affordable costs compared to other modes of transportation. In addition, the use of digital-based applications provides ease in ordering and transparency of fares. However, the aspects of safety and comfort remain a primary concern for students. Therefore, it is recommended that students use official online motorcycle taxi (ojek) applications to minimize the risk of fraud and other undesirable incidents. Overall, the Maxim online motorcycle taxi service serves as a transportation solution that supports students' mobility needs in urban environments.

This study examines the presentation of trauma in the character of River in the film “The Architecture Of Love” through Roland Barthes' semiotic analysis, which includes three levels of meaning: denotative, connotative, and mythological. The focus of this study is on scenes that reflect trauma, categorized according to Cavanagh.M. (1982) theory as situational, developmental, intrapsychic, and existential trauma. The methodology used is descriptive-qualitative with documentation and observation techniques, where all trauma scenes are identified and analyzed in depth. The results of the study show that intrapsychic trauma is the dominant category, followed by existential, situational, and developmental trauma. The representation of trauma in the character River is conveyed through visual symbols such as dark colors, a closed language system, dim lighting, and a quiet urban atmosphere, which create emotional meaning without verbal expression. This finding confirms that films can convey complex psychological experiences through visually rich language, while also revealing new insights into non-verbal communication in film media.

This study examines the impact of government policies on the distribution and quality of Early Childhood Education (ECE) teachers in Indonesia, as a crucial component in efforts to improve the quality of education services during the golden age. Governmment policies such as the Minister of Education and Culture Regulation No. 137 of 2014 concerning National PAUD Standards, tiered training, teacher certification, Teacher Professional Education (PPG), and the Teacher Mover program have significantly contributed to improving educator competency. However, the implementation of these policies still faces various obstacles, particularly related to the unequal distribution of educators between urban and 3T areas, limited access to education, and the low welfare of non-civil servant teachers. The study results indicate that government policies have increased teacher awareness of the importance of academic qualifications and professional competencies, but the impact on equity has not been optimal due to geographical factors and unequal regional support. This analysis emphasizes the need to strengthen the data-based teacher needs mapping system, improve ongoing training programs, and provide more appropriate welfare support for PAUD teachers. Therefore, collaboration between the central government, regional governments, professional organizations, and the community is key to ensuring the distribution of educators and improving the quality of PAUD services nationally. This study is expected to serve as a reference in developing more effective and equitable policies for PAUD educators in Indonesia.

Air pollution is an increasingly serious environmental issue in major cities, including Serang City. The decline in air quality due to motor vehicle emissions, industrial activities, waste incineration, and the reduction of green open spaces harms public health and the environment. Polluted air can cause respiratory problems, reduce the quality of life, and threaten urban ecosystems. This study aims to analyze the level of knowledge, perceptions, and behaviors of Serang City residents regarding air pollution, as well as assess their support for air pollution control policies. The methods used include a mixed-method approach through questionnaires, in-depth interviews, and participatory observation. The results of the study show that the community has a good understanding of the sources of air pollution, particularly vehicle and industrial emissions. They are also aware of the impact of pollution on health, especially for children and the elderly. However, the implementation of protective behaviors such as wearing masks is not yet consistent. Some positive behaviors have begun to develop, such as not burning trash and planting plants at home. Support for pollution control policies is also high. This study emphasizes the importance of continuous education, law enforcement, and collaboration between the government, society, and environmental communities in efforts to mitigate air pollution in Serang City.  

Balinese langauge as a core element of Balinese culture, faces challenges amidst urbanization and globalization, particularly in Denpasar City. This study analyzes the implementation of Balinese language development policies based on regulations such as Bali Provincial Regulation No. 1 of 2018 and Bali Governor Regulation No. 80 of 2018. A descriptive qualitative approach is used through document analysis and literature review. The results demonstrate the success of programs such as Balinese Language Month in increasing community participation, although challenges such as declining language use among young people remain. The discussion emphasizes the need for digital and family integration for revitalization, with a focus on language maintenance aspects using Fishman's sociolinguistic theory that highlights intergenerational transmission and strengthening the domain of language use. The conclusion recommends strengthening policies for the sustainability of Balinese language, including a synergistic approach between the government, communities, and educational institutions. This study contributes to the understanding of regional language maintenance in urban contexts, with implications for national policy in Indonesia.

The Field Work Practice (PKN) carried out at PT MK Prima Indonesia focused on the implementation of periodic maintenance practices for the premoulding hydraulic press machine as an effort to maintain machine performance and operational lifespan. The main activities included identifying critical components such as the hydraulic system, valves, pressure hoses, and oil filters; conducting direct observation of common disruptions; and performing daily maintenance checklists that covered pressure monitoring, operating temperature, leakage detection, machine cleanliness, and lubrication conditions. Comprehensive cleaning procedures, condition-based filter replacement, and functional testing were also conducted to ensure reliability and safety in the production process. The implementation methods involved participatory observation, interviews with technicians regarding common failure patterns, visual and functional inspections, as well as the use of structured checklists supported by inspection documentation. The results indicate a significant decrease in the frequency of disturbances caused by leaks and oil contamination, improved compliance with routine inspection procedures, and enhanced machine readiness during operations. The introduction of structured documentation and simple technical training further improved technicians’ ability to detect early signs of abnormalities in the hydraulic system. As a recommendation, the company is advised to strengthen the use of digital recording systems, adjust filter replacement intervals based on actual machine conditions, and implement regular training programs focusing on contamination control and predictive maintenance.

The Field Work Practice (PKN) carried out at PT MK Prima Indonesia focused on the implementation of periodic maintenance practices for the premoulding hydraulic press machine as an effort to maintain machine performance and operational lifespan. The main activities included identifying critical components such as the hydraulic system, valves, pressure hoses, and oil filters; conducting direct observation of common disruptions; and performing daily maintenance checklists that covered pressure monitoring, operating temperature, leakage detection, machine cleanliness, and lubrication conditions. Comprehensive cleaning procedures, condition-based filter replacement, and functional testing were also conducted to ensure reliability and safety in the production process. The implementation methods involved participatory observation, interviews with technicians regarding common failure patterns, visual and functional inspections, as well as the use of structured checklists supported by inspection documentation. The results indicate a significant decrease in the frequency of disturbances caused by leaks and oil contamination, improved compliance with routine inspection procedures, and enhanced machine readiness during operations. The introduction of structured documentation and simple technical training further improved technicians’ ability to detect early signs of abnormalities in the hydraulic system. As a recommendation, the company is advised to strengthen the use of digital recording systems, adjust filter replacement intervals based on actual machine conditions, and implement regular training programs focusing on contamination control and predictive maintenance.

This study examines and provides a descriptive analysis of Omah Pulung, a residential house located in Banyumanik, Semarang City, Central Java. The focus of the research is directed at the application of a minimalist architectural style that emphasizes simplicity of form, spatial efficiency, and aesthetic aspects that are in harmony with the characteristics of the building. The principles of minimalist architecture are applied through the selection of simple but functional materials, optimal natural lighting arrangements, and air circulation systems that are suitable for Indonesia's tropical climate. The research method uses a qualitative approach with observation, documentation, and descriptive analysis techniques to explore the physical and functional characteristics of the house. The results of the study show that Omah Pulung successfully represents the principle of minimalism through simple geometric shapes, efficient use of space, and natural lighting that supports the comfort of residents. In addition, good air circulation strengthens the adaptation of the house to tropical climatic conditions so that healthy and sustainable housing is created. This research contributes to the understanding of the application of minimalist architecture in the local context, as well as a reference for the development of residential design that is environmentally friendly and according to the needs of urban communities in Indonesia.

The development of digital technology and the Internet of Things (IoT) has transformed the paradigm of urban development towards the concept of a smart city based on data and connectivity. This study analyzes the nature of smart cities through three dimensions of the philosophy of science: ontology, epistemology, and axiology. From an ontological perspective, a smart city is understood as a complex entity consisting of physical, digital, social, and ecological systems that interact with each other to create efficient and adaptive urban governance. Epistemologically, knowledge in a smart city is obtained through the process of collecting, processing, and analyzing data from various IoT devices, sensors, and citizen participation, thereby producing new insights that support evidence-based decision-making (data-driven governance). From an axiological perspective, a smart city has ethical values and goals to improve the quality of life of its citizens, strengthen government transparency, maintain environmental sustainability, and promote inclusive social participation. Thus, this study asserts that the development of a smart city is not only technological but also has a philosophical foundation oriented towards a balance between efficiency, humanity, and sustainability.

Pneumonia is one of the leading causes of mortality in children under five, especially those living in households with active smokers. This study aims to determine the risk of pneumonia in toddlers from smoking families in the working area of Meuraxa Public Health Center, Banda Aceh City. The research used a case-control design with 33 respondents, consisting of 11 cases (toddlers with pneumonia) and 22 controls (toddlers without pneumonia). Data collection was conducted through a structured questionnaire and analyzed using the chi-square test. The findings revealed that the prevalence of pneumonia among toddlers from smoking households was 33.3%. There were significant associations between pneumonia incidence and several factors, including nutritional status (p = 0.024), immunization status (p = 0.034), exclusive breastfeeding (p = 0.027), parental smoking behavior inside the house (p = 0.009), and household ventilation (p = 0.017). Toddlers who were not exclusively breastfed, had poor nutritional status, incomplete immunization, poor air ventilation, and exposure to cigarette smoke at home were at higher risk of developing pneumonia. This study emphasizes the vital role of the family in creating a healthy, smoke-free home environment that supports children's well-being. Community-based interventions and educational programs are essential to prevent pneumonia and improve the quality of life of children, particularly in urban public health areas like Meuraxa.

The limited urban land in Greater Jakarta demands the emergence of a residential approach that is more adaptive to the growing needs of space. This study examines the application of the concept of a growing house in the residence of Rumah Swatantra by Studio Dasar. The research method uses a qualitative-descriptive approach through literature studies and direct interviews with the designer architects. The results of the study show that the application of modular patterns and concrete hollow infill structure systems provides the flexibility of space growth without the need to dismantle the basic structure. The process of space growth occurred gradually following the development of the family from 2017 to 2024, and showed that the quality of space can still be maintained even though the building is built in stages. These findings confirm that the concept of growing houses can be an alternative strategy for sustainable housing in urban areas that experience limited land. In addition, this study highlights the importance of careful spatial planning from the early stages of development so that spatial expansion can be carried out efficiently, measurably, and in harmony with the needs of residents. This approach not only improves the comfort and functionality of the space, but also minimizes construction waste and future renovation costs.

This study aims to analyze the interest of residents of Semarang City in using the Trans Jateng service and to identify the factors that influence this interest. The background of this study is the low proportion of residents switching to public transportation despite the availability of the Trans Jateng service. This research adopts a quantitative approach, utilizing a survey method to collect data, which is then processed using SPSS software. The results of the study indicate that factors such as service quality (including service, comfort, and safety), fare perception, and stop access significantly influence the interest of residents in using Trans Jateng. These findings are valuable for understanding the factors that drive the adoption of public transportation in urban areas. The novelty of this study lies in its specific focus on Semarang City and the integration of resident interest variables with the relatively new Trans Jateng service in the region. The study’s implications offer practical recommendations for public transport operators to improve fare policies, enhance promotional strategies, and optimize modal integration to encourage greater use of public transportation.

Penelitian ini bertujuan untuk mengkaji dampak penutupan perlintasan kereta api Alastuo terhadap peningkatan volume kendaraan dan intensitas kebisingan di kawasan Fly Over Bangetayu, Kota Semarang. Fenomena ini mencerminkan tantangan tata kelola lalu lintas urban akibat perubahan infrastruktur transportasi. Dengan menggunakan pendekatan kualitatif deskriptif, studi ini dilakukan melalui metode studi kasus di lokasi terdampak. Data dikumpulkan melalui wawancara semi-terstruktur, observasi partisipatif, dokumentasi visual, serta pengukuran intensitas kebisingan menggunakan sound level meter pada sembilan titik waktu berbeda selama tiga hari pengamatan. Partisipan meliputi warga sekitar, pengguna jalan, dan petugas lalu lintas. Hasil analisis tematik menunjukkan adanya korelasi positif antara peningkatan volume kendaraan dan intensitas kebisingan, dengan nilai puncak kebisingan mencapai 93,6 dB pada sore hari. Temuan ini menegaskan bahwa perubahan rute akibat intervensi kebijakan infrastruktur dapat menyebabkan beban akustik yang signifikan di jalur alternatif. Penelitian ini memberikan kontribusi pada pemahaman tentang relasi spasial antara kebijakan lalu lintas dan degradasi lingkungan akustik. Implikasi teoretis mengarah pada integrasi studi kebisingan dalam perencanaan transportasi berkelanjutan, sementara implikasi praktis mencakup kebutuhan akan pengaturan lalu lintas yang adaptif serta mitigasi kebisingan melalui vegetasi, jalur alternatif, dan edukasi berkendara. Penelitian lanjutan disarankan melibatkan pendekatan interdisipliner untuk mengevaluasi dampak kebisingan terhadap kesehatan masyarakat secara langsung.

This study aims to analyze the role of digitalization in driving social development in Indonesia through the perspective of development sociology. Digitalization has become a major force transforming social structures, values, and interaction patterns in societies worldwide. The results show that digital technology contributes significantly to increased social participation, economic empowerment, and equitable access to information. However, on the other hand, challenges arise in the form of a digital divide between urban and rural communities that can deepen social inequality. In the context of development sociology, digitalization is not only viewed as a technological process, but also as a social phenomenon that influences the dynamics of community life. Therefore, digital-based development must be directed inclusively so that all levels of society receive equal benefits. The government, educational institutions, and the community need to synergize in strengthening digital literacy and maintaining socio-cultural values ​​amidst the current of technological globalization. With a fair and participatory approach, digitalization can be an important means of strengthening social solidarity and realizing shared prosperity.

This study examines two key development issues in developing : economic dualism and population issues, using a qualitative approach using library research. The analysis shows that economic dualism, characterizes by the gap between the low-productivity traditional sector and the high-tech modern sector, remains a key characteristic of Indonesia’s economic structure. On the other hand, high population growth and uncontrolled urbanization exacerbate inter-regional inequality and weaken the equitable distribution of development outcomes. The interconnectedness of these two issues creates a cycle of proverty that is difficult to break and hinders the achivement of sustaineble development. Therefore, an integrative and inclusive develpment strategy is neded, encompassing strengthenung the tradisional sector, equitable imvestment, improving the quality of human resources, and controlling population growth to ensure more balanced and equitable development.  

Puddles after rainfall remain a common environmental issue in urban areas, including in higher education environments. At Sultan Syarif Kasim State Islamic University (UIN Suska) Riau, post-rain flooding often disrupts academic activities and reduces comfort among campus residents. This study aims to identify the locations of post-rain flooding, analyze the contributing factors, and explore the perspectives and proposed solutions of the campus community through a participatory mapping approach. The study employed a qualitative descriptive method supported by Geographic Information System (GIS) spatial analysis. Data were collected through field observations, interviews with students, lecturers, and staff, and GPS-based flood point mapping. Results show that puddles frequently occur in main parking areas, inter-faculty roads, and flat areas around the Student Activity Center. The main causes include inadequate drainage systems, clogged channels due to waste, limited infiltration zones, and impervious surfaces. The campus community suggested solutions such as improving drainage, constructing infiltration wells, and adopting the green campus concept. Participatory mapping proved effective not only for identifying environmental problems but also for raising ecological awareness and shared responsibility among the academic community.