Increased economic growth in the city of Parepare with the presence of buildings around the estuary. In general, the composition of concrete making materials is taken from good materials. The problem encountered in the field is that the quality of concrete in construction decreases due to brackish water, causing structural elements in the construction to become porous. Meanwhile, preventive measures are rarely or never taken. As a result, the construction life is very short. Brackish water is one of the causes of structural failure. This is due to the content of sulfate and chloride ions in water containing salt/salts that react with chemical elements in reinforcing steel resulting in corrosion of the reinforcement. The purpose of the study was to analyse the compressive strength of concrete with a mixture of clean water against the percentage of brackish water with a maintenance age of 7, 14, 21, and 28 days. The results showed that brackish water had an impact on reducing the compressive strength of concrete due to the high chemical content in brackish water such as Sulfate (SO²¯) of 52.5 in brackish water in Kenjeran and 62.5 in brackish water in mangrove. Dissolved Solids (TDS) of 15188 mg/l in kenjeran brackish water and 3436 mg/l in mangrove brackish water. Organic Content (KMnO) of 8.05 mg/l in kenjeran brackish water and 6.69 mg/l in mangrove brackish water is too high, so the chemical content contained in brackish water can damage the compounds in the cement content and decrease the strength of the materials contained in the concrete. In this case it can result in concrete having a very low durability.

The maritime industry, as one of the vital sectors in the global economy, plays an indispensable role in facilitating international trade and the transportation of goods worldwide. However, confronted with challenges of heightened global competition and fluctuations in fuel prices, the industry needs to seek solutions to enhance efficiency and overall performance. This study assesses the application of Lean Management Principles in the maritime industry, emphasizing strategies such as value stream mapping, waste identification, and employee training as crucial for success. Findings reveal potential for enhancing operational efficiency and reducing waste, along with additional benefits such as heightened customer satisfaction and contributions to environmental sustainability. Recommendations for further research encompass case studies on Lean Management implementation in the maritime industry, the development of tailored implementation models, and investigations into the environmental ramifications of Lean Management application. In conclusion, the implementation of Lean Management holds significant promise for improving the performance of the maritime industry and fostering its overall development.

The wooden shipyard in Bahari Village is a privately-owned facility that conducts maintenance, repair, and construction of new wooden ships. The vessels serviced at this shipyard range from 10 GT to 25 GT and are made from wood. The purpose of this research is to evaluate the management of the wooden shipyard in Bahari I Village, Sampolawa District, South Buton Regency. The methodology used is a survey method, and the data is analyzed using fishbone analysis followed by a descriptive approach. The results of this study indicate that the construction and repair processes of wooden ships in Bahari I Village are not efficient due to facilities that do not meet standards, with only 22% of the necessary conditions being fulfilled. The management of this wooden shipyard is still far from adequate because several aspects remain uncontrolled, such as the shipbuilding process not meeting expected targets, delays in the availability and delivery of raw materials, and the use of very basic tools and outdated technology.
 

STBM is a comprehensive approach that not only includes sanitation infrastructure development, but also emphasizes changes in community behavior and sustainable waste management. Thus, in the implementation of STBM, the 3R Waste Disposal Site (TPS) is a key component in sustainable waste management. TPS 3R refers to waste management with the 3R principles, namely Reduce, Reuse, and Recycle. However, in this case Menur Pumpungan Village still does not have a 3R-based waste processing facility. So it is necessary to plan the optimal design of TPS 3R to be applied in the future and be able to make a significant contribution in efforts to realize Community-Based Total Sanitation. To calculate the number of TPS 3R services as the basis for design, data on the population in 2023 and the waste generation rate of 2.6 liters/person/day were used. Based on the calculations made, in an effort to support the implementation of the Community-Based Total Sanitation program. The construction of TPS 3R, which is planned to be able to serve the domestic waste processing of the entire Menur Pumpungan urban village community, is expected to reduce the amount of waste entering the landfill. The total land required for operational facilities is 511.85 m2 with a TPS 3R design consisting of a 440.85 m2 waste processing area and 96 m2 of other supporting facilities..

The Pukun Kuala Tanjung rice factory is a rice factory located in Pematang Tobat village, Sei Suka subdistrict, Batubara district. The Pukun Kuala Tanjung rice factory has been operating for fifteen years in milling rice into rice. In operating the Pukun Kuala Tanjung rice factory, it can produce 25 tons of rice/week. In carrying out the rice production process at the Pukun Kuala Tanjung rice mill, we often find that the rice produced does not match the quality of production, including the color of the rice being less than good (yellow), rice that is not peeled and crushed, which can lead to a decrease in the quality for sale and even unsalability. rice on the market so that the Pukun Kuala Tanjung rice factory experiences losses in producing rice. The aim of this research is as follows: to know how to control the quality of rice using the SQC (Statistical Quality Control) method, to find out the quality of rice produced by the Pukun Kuala Tanjung rice factory is still in good condition. controlled or not. This research uses descriptive quantitative research both when collecting and processing data where the data collected is data on defective rice products and data processing will be carried out using the SQC (Statistica Quality Control) method. From the data processing that has been carried out in this research, the author draws the following conclusions: Rice quality control using the SQC (Statistical Quality Control) method can be seen as follows: Based on the control chart, it is known that defective products are not within the upper control limits (Upper Control Limit) and Lower Control Limit which can mean that a defective product requires repairs to be made to the defective product.

The main objective of arranging the warehouse layout is to find the most appropriate method so that the movement of goods in the warehouse runs smoothly. Apart from that, the aim of setting the warehouse layout is also to maximize the warehouse area so that the costs of handling activities remain low. Stacks of goods in the warehouse are stacked with a maximum height of 700 cm and above or approximately 7 items stacked in one pile. If these items continue to be stacked using 7 stacks and above, it can cause many defects to occur. This defect occurs because there are too many items piled up. The pile of items should be stacked with a maximum of 5 piles and above. Therefore, defects that occur can cause delays in delivery times and result in large costs experienced due to these defects

The construction of a high-rise building is a construction project that can be said to have high risk factors so that it will have a negative effect on the project schedule, quality, and costs needed. Project risk management analysis is needed to control risks and to determine risk handling to prevent the occurrence of dominant risks in construction projects. In this study, primary data collection was carried out by distributing questionnaires, while secondary data was obtained through data from projects and literature studies. The data obtained from the questionnaire will be analyzed for risk variables using the Severity Index (SI) method. Meanwhile, the risk level analysis uses the Probability Impact Matrix (PIM). The results of the analysis show that there is a dominant risk that has the most influence on the time aspect is the risk of delay in material delivery with a high level of risk. The dominant risk that has the most influence on the cost aspect is the occurrence of equipment damage while working with a medium risk level. The dominant risk that has the most influence on the quality aspect is that the quality of the material is not in accordance with the quality specifications with a medium risk level.

Efficient and high quality public transportation is an important factor in overcoming traffic congestion problems in metropolitan areas. Transjakarta, as one of the largest mass transit systems in Indonesia, plays a key role in providing reliable transportation services for the people of Jakarta. Customer satisfaction with Transjakarta officer services is a crucial factor in ensuring the success and sustainability of this system. This research aims to analyze the level of customer satisfaction with the quality of service provided by Transjakarta officers. By using quantitative methods and collecting primary data through online questionnaires as well as secondary data from related sources, this research evaluates various aspects of service, such as friendliness, speed of response, and clarity of information provided by officers. The results of this analysis are expected to provide valuable insights for Transjakarta in identifying areas that require improvement and devising strategies to increase overall customer satisfaction, thereby maintaining loyalty and competitiveness in the public transportation industry.

This journal analyzes the exploration of dependence on technology in the novel "Dune" by Frank Herbert. The main focus of the journal is on the technological concepts introduced in the story, including the use of Melange as an energy source for the Holtzman Drive, the development of artificial intelligence, shields versus laser weapons, as well as water distillation technology used by the Fremen. This journal explains the impact of dependence on technology in the political, social and economic context of the universe created by Herbert. This research also discusses the contradiction in the acceptance of technology between human needs and the prohibition on the use of computers in the history of the Dune universe.
 
 
 

Semen Z is one of the largest cement supplier companies in Indonesia and will continue to increase every year. The development of the cement industry is in line with the continued development of infrastructure projects, both private and Indonesian government. PT. Semen Z has good integration from raw material providers to cement that is ready to be used by every project that requires it. Development of PT. Cement Z will occur in the quantity of raw materials, human resources, and production processes, up to distribution to consumers. The activities carried out are land clearing/stripping, blasting, excavation and loading, as well as transportation and destruction. Raw materials sourced from this mining process include limestone, silica stone and clay. In this study mining was only carried out on limestone and clay was obtained from suppliers. The units used in the inventory data are limestone and clay raw materials (tons), ammonium nitrate chemicals (tons), diesel fuel (liters), electricity (kWh), emissions (tons), B3 waste (tons), non-B3 waste (tons) and products (tons). Every activity process carried out will have an impact on the environment, so the Company's commitment to a green industry or clean industry is required. To determine the environmental impact analysis on cement production activities, the Company conducted an environmental impact analysis using the Life Cycle Assessment (LCA) method. The aim of this research is to identify improvements in environmental performance, especially those that are hotspots in the Company's production process. The research results show that the highest identification of environmental impacts is obtained from activities at the Limestone mine, in accordance with the Pareto rules approach where if the contributors are more than 80% of the food it will affect the results of the impact analysis obtained.