The Great Mosque of Tegal City is a historic building that has undergone numerous renovations since its establishment in 1825-1830. These renovations aimed not only to meet the functional and capacity needs of worshippers but also reflected modern architectural trends, occasionally compromising historical elements. This study employs a qualitative approach using documentation, observation, and literature synthesis methods to analyze the mosque's architectural changes. Using John Obert Voll's "continuity and change" theory, the research identifies the preserved original architectural elements and the modifications made. The findings reveal that while several original features, such as the mosque's core structure, remain intact, significant changes in renovations—such as the addition of floors, towers, and alterations to the gate design—have impacted the mosque's historical and aesthetic values. The study recommends the preservation of historical elements to maintain the mosque's cultural identity.

Jayapura City There is Abepura District which has supporting economic infrastructure so that economic growth in Abepura District is very rapid. The existing city forests in several locations in Abepura District need to be improved or expanded to improve their function. This study aims to see the spatial planning policy in Jayapura City related to the area of ??the Abepura District city forest, analyze the implications of the Jayapura City spatial planning policy on the area of ??the Abepura District City Forest, and Analyze the Suitability of Abepura District City Forest Land. This research method uses qualitative descriptive analysis and Spatial Analysis to obtain a picture of the area of ??the Abepura District City Forest as well as a picture of land conversion and the suitability of the Abepura District City Forest land. The results of this study are that the area of ????Approximately 997 hectares of City Forest is in Abepura District According to the 2014 Jayapura City Spatial Policy Data, the City Forest Development policy has only been carried out once in Organda over the past few years, while policies that reduce the area of ????City Forest Many are carried out in housing, building and road development activities, this is because on average the development already has a land permit and a building permit. This study provides an overview that the problem of the reduced area of ??the Abepura District City Forest occurs because the Jayapura City Government is not firm enough in implementing the Jayapura City Spatial Planning Policy in development so that it is in accordance with the Area Designation.

Noise generated by Diesel Power Plants (PLTD) is a significant environmental problem, especially in urban areas and settlements adjacent to power plant facilities. This study analyzes the noise level around the Fakfak Cotton Plant and its impact on the local community. This study uses a combination of methods, including noise level measurements using a Sound Level Meter (SLM), field observations, interviews with the community, and a SWOT analysis to evaluate the strengths, weaknesses, opportunities, and threats in noise mitigation. The measurement results show that the noise level generated exceeds the threshold of 55 dBA set by the Decree of the Minister of Environment Number 48 of 1996 for residential areas. This condition has a negative impact on the comfort, health, and social interaction of the community around the PLTD location, causing sleep disturbances, stress, and decreased quality of life. The SWOT analysis shows that although the PLTD has advantages in terms of sustainable operations and professional workers, the main weaknesses lie in the lack of soundproofing and the absence of regular noise evaluations. However, there is a great opportunity in the application of noise mitigation technologies, such as the installation of soundproofing, the use of acoustic walls, and planting vegetation as a sound barrier. In addition, collaboration with local governments and increasing environmental awareness can help manage noise impacts more effectively. The main threats identified include potential social conflicts with surrounding communities, negative health impacts, and changes in environmental policies that can affect PLTD operations. With the right mitigation strategies, such as the application of soundproofing technologies, improved communication with the community, and better integration of environmental policies, the environment around PLTDs can become more comfortable and conducive for the community. This study emphasizes the importance of regulatory and technology-based approaches in managing noise in urban environments, as well as the need for sustainable mitigation measures to maintain the well-being of communities around PLTDs..

Housing in the BSB (Bukit Semarang Baru) area, located right in front of the lake, offers an architectural idea that combines the comfort of modern housing with a natural touch. In this analysis, several important architectural elements such as the use of foot plate foundations, construction time, and the use of wood planks on the building facade are explored to understand how this design combines functional and aesthetic aspects. This study aims to analyze these elements, especially in relation to spatial planning, functionality, and aesthetics, as well as how the integration between building architecture with the elements of the lake and the surrounding green space. Through a qualitative approach and direct observation, this paper offers a critical view of the concept of sustainability applied in the design of this area.

The geomorphological condition of Fakfak Regency is dominated by limestone. It makes ground water difficult to access. The clean water crisis in Fakfak Regency requires people to look for alternative sources of clean water such as rainwater. However, during the dry season, people will have great difficulty with clean water. Cloudfisher or fog catcher is a technique for collecting fog that have condensed into water. Cloudfisher's ability to catch fog or dew and produce water varies depending on the situation with an average of around 2 liters – 10 liters/m2/day. The ability of this technology to produce water depends on the net material used, the size of the net, the direction and model of the net, and the location of the net placement. In this research, the potential cloudfisher to produce water in Fakfak Regency will be examined, with the ultimate aim of seeing how effectively this technology is applied in Fakfak Regency in terms of the amount of water produced. The method used in this research is a field study by reviewing locations in Fakfak Regency with the altitude, fog conditions, temperature and humidity that are most suitable for the application of cloudfisher technology. The fog catcher was installed using a standard research model using 65% and 85% cover nets. Each fog catcher material was installed for 1 month and the amount of water captured by the tool was checked every morning at 06.30 am. The location of the fog catcher is based on several factors including altitude, air humidity, fog frequency, temperature and wind speed. The average water volume obtained in the 65% cover net was 59.6 ml while in the 85% cover net it was 26.24 ml. Factors that influence the amount of water obtained are net material, net cover, fishing area, equipment placement, and weather. The fog catcher (cloudfisher) in Fakfak Regency has the potential to be used but still requires further research regarding the design and materials used so that more water can be obtained and can be used by local communities as an alternative source of clean water

Oil and gas companies generally have large green areas as part of fulfilling environmental and aesthetic obligations in industrial areas. Routine maintenance such as grass cutting produces organic waste that needs to be managed efficiently to prevent negative environmental impacts. This study aims to calculate the generation of grass waste in oil and gas company areas by comparing two methods: direct weighing and sampling methods. The direct weighing method is carried out by collecting and weighing the results of the cutting in a limited area, while the sampling method involves taking samples from several representative points and extrapolating the results to the entire area. The results showed that the average grass waste generation was 0.286 kg/m². With an area of ??around 1,000 m², the total generation is estimated to reach 286 kg. Both methods have proven to complement each other: direct weighing provides precise data, while the sampling method allows for efficient estimation for larger areas. This data can be used as a basis for planning more adaptive, effective, and sustainable grass waste management, including the use of waste as organic compost that has economic value and is environmentally friendly.
 

Limited land in the urban area of Jayapura Regency is a major challenge in the provision of Green Open Space (RTH), even though the existence of RTH is very important to maintain ecological balance and the quality of the community's living environment. In this context, the Dosay Public Cemetery (TPU) has great potential to be optimized as an alternative green space that is multifunctional-ecological, social, and aesthetic. This study aims to assess community perceptions of the utilization of TPU Dosay as a green space, as well as to formulate a strategy for its sustainable development. The approach used was mixed methods, with data collection through a survey using a Likert scale to 35 respondents, open interviews with 9 key informants, as well as SWOT and AHP analysis. The results showed that most people support the development of TPU Dosay as a reflective green space that is comfortable and ecologically valuable. From the results of AHP analysis, policy and regulation aspects are the top priorities in the development strategy, followed by vegetation and accessibility aspects. Strategic recommendations include the preparation of adaptive vegetation zoning, strengthening the local policy framework, active involvement of indigenous communities, and cross-sector collaboration between local governments, academics and the private sector. With the right strategy, the development of TPU Dosay is expected to be an innovative solution in overcoming the shortage of green spaces in Jayapura Regency.

This study aims to assess the feasibility of facilities and infrastructure at the Dok IX Flats (Rumah Susun) located in Tanjung Ria Sub-district, North Jayapura District, Jayapura City, based on the Indonesian National Standard (SNI) 03-1733-2004, as well as residents’ perceptions. The research uses a mixed methods approach, combining quantitative and qualitative methods. Data were collected through field observations and questionnaires distributed to 43 respondents using the Likert scale. The results show that, in general, the housing complex is considered feasible, with an average score of 70 or 76.1%. Facilities such as education, health, worship, green open space, road access, and drainage are considered adequate. However, inconsistencies were found in the disaster mitigation system. Although categorized as "Feasible," field observations revealed damaged evacuation routes and the absence of essential firefighting equipment (APAR). In conclusion, the Dok IX Flats are generally suitable for habitation, but urgent improvements are needed, particularly in the disaster mitigation aspect, to ensure the safety and comfort of the residents.

Coastal areas are transitional areas between land and marine ecosystems that are very vulnerable to natural disasters, one of which is abrasion. Coastal abrasion is the process of erosion of coastal areas caused by wave activity, ocean currents, and human activities such as infrastructure development and sand mining. Ciberi Beach (Tanjung Ciberi) located in Enggros Village, Abepura District, Jayapura City, is one of the coastal areas that experiences continuous abrasion. Its strategic location and direct facing the Pacific Ocean makes this area very vulnerable to coastal erosion. Based on the author's experience while conducting Field Work Practices at the Papua River Basin Center (BWS Papua), it is known that abrasion has caused damage to public facilities and significant coastline decline since 2019 (Cepos, 2024). Strong suspicions arose from the community based on the results of interviews conducted that the construction of the Youtefa Bridge contributed to the acceleration of abrasion. Previous research also showed that the rate of abrasion in the Yos Sudarso Bay area, including Ciberi Beach, reached 0.89 meters per year. Therefore, this study aims to analyze the level of damage to Ciberi Beach due to abrasion during the period 2014–2024, and to provide recommendations for handling to reduce the impact of damage in the coastal area.

This journal examines the factors that have the potential to cause delays in the implementation of the Dempsey Hill residential housing construction project, North Citraland, Surabaya. Projects managed by CV. Tirta Kusuma has a target of completion in 10 months, but there are indications of delays that affect the schedule and costs. This study aims to identify and analyze the dominant factors causing delays, such as project management, material procurement, and human resources. The methods used include observation, questionnaire distribution, and literature study. The results of this analysis are expected to provide recommendations to improve time management, resource efficiency, and control of future construction projects. The results of data analysis in this study indicate that project delays are primarily caused by material delays and errors in work execution, as concluded based on the results of factor analysis.