This study aims to compare the level of carbon monoxide (CO) air quality in Green Open Space (GOS) and Non-Green Open Space (NGOS) along the Abepura–Sentani main road in Jayapura City. The research was conducted in two locations: the Taman Makam Pahlawan Denzipur Waena (GOS) and the front area of Mega Waena (NGOS). CO levels were measured using a CO smart sensor over a period of one week, with measurements taken in the morning, noon, and afternoon at six sampling points. The findings indicate that CO concentrations are significantly lower in GOS areas compared to NGOS areas. The presence of vegetation in GOS helps reduce CO pollution by acting as a natural filter. These results highlight the importance of maintaining and developing green open spaces in urban areas as part of efforts to reduce air pollution and improve public health.

The oil and gas sector, particularly the upstream segment involving exploration and production, plays a crucial role in contributing to Indonesia's economy. Indramayu Province, being one of the country’s oil and gas-producing areas, also experiences both direct and indirect effects from upstream oil and gas operations. This study aims to assess the influence of upstream oil and gas activities on the local economy in Indramayu Province. The research employs both qualitative and quantitative methods, incorporating secondary data analysis and interviews with relevant stakeholders. Findings indicate that upstream oil and gas operations have a substantial impact on the regional economy, notably through job creation, improved income levels, and effects on other economic sectors. However, challenges remain regarding the sustainability of natural resources and the need to better optimize the benefits for local communities. Keywords: Upstream Oil and Gas Operations, Local Economy, Indramayu Province, Economic Impact, Resource Sustainability, High-quality Oil

The aim of this research is to determine the level of service on Resident Abdul Rozak's roads in 2022 based on the 1997 Indonesian Road Capacity Manual by determining the volume of vehicles on Resident Abdul Rozak's roads, assessing the influence of side obstacles on the sections and determining the level of service on Resident Abdul Rozak's roads. This research is quantitative descriptive research. Data collection uses field observations and documentation. Data analysis uses the 1997 Indonesian Road Capacity Manual. The results of the data analysis are used to determine the traffic volume on the Resident Abdul Rozak road. The results show that the volume of traffic flow on the Resident Abdul Rozak road on Thursday, December 8 2022 in the north direction is an average of 1,426 pcu/hour and in the South direction an average of 1,640 pcu/hour, while on Saturday 24 December 2022 the North volume was an average of 1,562 pcu/hour and in the South direction an average of 1,350 pcu/hour. Side resistance is in the low category with an average value of 244, 925 where the condition of side resistance is not too influential. The level of service is in category E with a value of 0.901, where conditions on that day of the city's roads were unstable, at full capacity.

Special stopping space for motorbikes is one of the facilities for motorbikes to stop at intersections during the red phase. This special stopping space has been tested on a limited scale to support the movement of motorbikes at signalized intersections in large cities in Indonesia. This research aims to evaluate the intersection and then plan a special stopping room according to the number of motorbikes piling up during the red phase at the intersection. Intersection evaluation is carried out based on primary data and secondary data. The calculation method is guided by the 1997 Indonesian Road Capacity Manual (MKJI) and Technical Planning Guidelines for Special Stop Spaces (RHK) for Motorcycles at Signalized Intersections in Urban Areas.The traffic behavior of the existing intersection is, west approach capacity 335 pcu/hour, DS (Degree of Saturation) 1,878, queue length 97 m and average delay 157 sec/pcu. East approach capacity is 342 pcu/hour, DS (Degree of Saturation) is 2,295, queue length is 97 m, and average delay is 169.3 sec/pcu. North approach capacity is 600 pcu/hour, DS (Degree of Saturation) is 0.546, queue length is 157 m, and average delay is 69.2 sec/pcu. South approach capacity is 941 pcu/hour, DS (Degree of Saturation) 0.987, queue length 245 m, and average delay 111.6 sec/pcu.The special stopping space design on the northern approach is 2 lanes with an approach lane and an area of ??84 m2; on the southern approach, namely 2 lanes with an approach lane and an area of ??84 m2; on the western and eastern approaches do not meet the 2012 Age Work Department Service standards in RHK planning.

Rapid technological developments encourage the banking sector to continue to innovate so as not to be left behind. Tight competition in this industry is caused by customers' freedom to choose products and services that are considered more profitable. This phenomenon is known as Customer Churn, which is a condition where customers choose not to continue subscribing to a particular company. The method applied uses a machine learning approach and customer segmentation approach. The churn analysis results show that the machine learning model, especially the random forest model, has the highest level of accuracy with an F1-Score of 91%. This model has the potential to reduce churn rates from 20.4% to 5.61%, illustrating its positive impact. Apart from that, for the clustering results, the K-Prototype model was obtained for the clustering model with the highest Silhouette Score number of 0.1557 and 4 clusters were obtained.
 
 

This study aims to analyze the impact of administering commercial probiotic bacteria on the wastewater from tofu industries on changes in Bio-logical Oxygen Demand (BOD) and Dissolved Oxygen (DO) levels. Tofu industry wastewater is known to have high BOD and low DO levels, which pose a potential environmental pollution risk. This study used a pure experimental method with variables including the ratio of tofu industry wastewater to commercial probiotics (1:1, 1:2, 1:3) with an incubation interval of 8 hours. The results showed that the administration of commercial probiotic bacteria significantly reduced BOD levels and increased DO levels in the wastewater. The 1:3 ratio of tofu industry wastewater to commercial probiotics showed the most optimal effect in increasing DO and decreasing BOD. An incubation time of 32 hours showed the most optimal effect in increasing DO and decreasing BOD. The 1:3 volume ratio between tofu wastewater and probiotics (25% tofu wastewater and 75% probiotics) proved to be the most effective, with the highest DO increase of 2.51 mg/L and the largest BOD decrease of 144.20 mg/L. In addition, incubation time also had a significant effect, the longer the incubation time, the more optimal the probiotic activity in reducing BOD levels and increasing DO levels. The conclusion of this study is that the administration of commercial probiotic bacteria at a 1:3 ratio and an incubation time of 32 hours is an effective way to improve the quality of tofu industry wastewater.

The foundation is a substructure which functions to support the loads and forces caused by the superstructure (superstructure) to the soil layer which will carry these loads and forces. Deep foundations are usually used to obtain a large enough soil bearing capacity and if the depth of the hard soil is far below the ground surface. The aim of this task is to analyze the bearing capacity of pile foundations using sondir data, standard penetration test (SPT) data, as well as the finite element method using the plaxis program. The method used in this final assignment is by studying literature, then collecting the necessary data, and after that carrying out calculation analysis using existing methods. From the results of the calculations carried out, different results were obtained. Where for sondir data at point S1 obtained Qu =115.80 tons; at point S2 obtained Qu = 104.80 tons; at point S3 obtained Qu = 105.50 tons. Meanwhile, based on SPT data at point BH-01, Qu = 398.23 tons, and using the plaxis program Qu = 425 tons

Indonesia is expected to enter the Demographic Bonus era, a condition where the population of productive age is greater than that of non-productive age. This dominant generation of productive age can also be called the Millennial Generation. According to data held by BPS regarding the increase in Indonesia's population in 2015, the percentage of the working age population was around 70%. The Demographic Bonus has the potential to spur Indonesia's economic growth. However, this condition has requirements, namely the need to provide housing facilities that can accommodate the percentage of the working age population in the range of 70%. The Demographic Bonus has the potential to spur Indonesia's economic growth so that it is hoped that it can improve the welfare of the Indonesian people. However, this condition has requirements, namely the need to provide housing facilities that can accommodate these millennials. Moreover, the current urbanization trend is encouraging the millennial generation to work in big cities in Indonesia. Providing housing facilities in areas supported by adequate transportation facilities or transit/TOD-based housing development can increase the work productivity of millennials. However, the challenges faced in housing services in TOD areas are land issues and ownership status owned by private parties because strategic locations have higher value from an economic perspective. If this happens, then residences in TOD areas will become typical residences intended for people with high incomes. On the other hand, not all millennials are high-income people. In terms of age, most millennials are still in the middle and lower category because they are still at the stage of starting their careers, so providing housing facilities for millennials does not only pay attention to location, but also to economic aspects. In this article, we discuss affordable housing in TOD areas as fulfilling housing needs for millennials along with concepts from an architectural perspective that have been implemented in Indonesia and in several countries in the world as a comparison so that they can be input for special development of affordable housing in TOD areas for millennials in Indonesia.

Soil stabilization is a common technique to improve the mechanical properties of the soil in term of increasing its strength and decreasing the associated settlement. The new sustainable materials have been emerged as alternative to the traditional binders such as the cement and the lime. These materials can be used in the shallow and deep soil mixing. This paper reviewed the mechanism of the soil stabilization, the traditional binder and the sever impacts on the environment, the new echo-friendly materials, deep soil mixing technique, and the geopolemerization. The results showed significant enhancement of the shear strength of the geopolymerized silt where the strength was increased by more than 6 times. This enhancement may be attributed to the developed geopolymer-jel NASH that filled the voids, surrounded and cemented the soil particles. Consequently, this matrix considered as a novel precursor for using in the soil injecting and grouting technique. 

This study aims to determine the influence of cost factors in determining the success of the modernisation and rehabilitation project in saddang sub unit langnga pinrang district, determine the influence of time factors in determining the success of the modernisation and rehabilitation project in saddang sub unit langnga pinrang district. determine the influence of quality factors in determining the success of the modernisation and rehabilitation project in saddang sub unit langnga pinrang district, determine the influence of health, safety and environmental factors in determining the success of the modernisation and rehabilitation project in saddang sub unit langnga pinrang district.  This research was conducted using quantitative analysis, namely through distributing questionnaires and interviews to the owner, the contractor and the consultant, Data analysis carried out on the questionnaire collected using skinative statistics, namely the percentage to determine the main factors of the success of a project using the Statistical Package for The Social Sciens program.