Indonesian Journal of Engineering Research

SELECTION OF ZEELAND’S MUNICIPAL EFFLUENT REUSE TECHNOLOGY FOR AGRICULTURE: PERSPECTIVE FROM DEVELOPING COUNTRY

Am Maisarah Disrinama — 2023-12-31

The water demands for agricultural purposes are increasing along with the population growth. Unfortunately, the water source is not sufficiently available nowadays. Furthermore, the quality of available water is more deteriorated due to the contamination from many sources such as households, industrial areas and other activities. Water board Scheldestromen handles 16 wastewater treatment plants located in Province of Zeeland in The Netherlands. The total production of treated effluent water from 16 wastewater treatment plants is 50 million annually. Quality of the effluent is relatively good, however, some potential risks related to the number of pathogenic microorganism and some trace metals are still there. The treated effluent is mostly discharged to river near to the treatment plant. The high amount of effluent discharge would potentially to be re-used for fulfill the demand for agricultural water. Therefore, this study aims to evaluate the feasibility of treated effluent from one of Walcheren wastewater treatment plants located in Ritthem, Province of Zeeland. This study uses the method of Multi Criteria Analysis (MCA) for looking the best way to reuse the effluent for agricultural purposes. The MCA questionnaire was developed based on the thorough literature review of effluent reuse. There are 6 criteria that need to be weighted and 6 scenario alternatives that need to be scored for the MCA questionnaire. The result show that the effluent water contained pathogenic bacteria (E.Coli) and some trace metals (Ni and Cu) more than suggested by FAO standard. Hence the most preferred technology is combination between closed conduits and UV system, with weighted score 0.78 while others had less weighted score compared to the selected one.

Key words : Agriculture, Effluent, Environment, Water Treatment, Zeeland.

ELEMENTS OF COST AND SCHEDULE OVERRUN IN CONSTRUCTIONPROJECTS

MUHAMMAD WAHEED — 2023-12-31

The cost of a basic upgrade to this wonderful piece of study is typically expressed in necessary units like earned dollars. The economic activity necessary to ensure that the building projects are sufficiently finished within an approved budget is properly included in the Project Cost. Although having more practical experience in construction management, cost and schedule overruns still play a significant role in many projects. Modern literatures are studied back-to-back and divided into two parts, which costs money for particular projects, overrunning of schedules in construction projects. The main study establishes that price increase causes cost and schedule overruns. For all intents and purposes, any client who is interested in facilities in the manufacturing sector is complete in terms of scope, timing, and cost. These studies have been published under a creative commons permission with the express purpose of carefully controlling causes. Uniquely required, necessary materials and cutting-edge products have a direct impact on building projects' schedule and expense overruns. The published study clearly shows the lack of essential maintenance of the project equipment, decreased working class productivity, barriers in bill declaration, poor preservation of the useful tools, and other external factors slowly constitute the significant factors that may properly conduct the project at a typical cost over the period.

Development of Fish Distribution Information System for Digital Virtual Assitant based on Harvesine with LoRA Node

Dwi Sasmita Aji Pambudi — 2023-12-31

The pressing issue of suboptimal and inefficient traditional fishing practices among local communities. Traditional fishermen often operate with inadequate equipment, resulting in less-than-optimal fishing outcomes. In this context, the lack of modern tools and techniques hinders the effectiveness of fish capture. Addressing these challenges is crucial for enhancing the productivity and sustainability of traditional fishing practices. The study aims to develop an advanced Fish Distribution Information System tailored for a Digital Virtual Assistant using the Haversine method and LoRA nodes. This system provide instantaneous, location-specific details about fish distribution and involves designing a data logger serving as repository for travel histories, utilizing a website as the user interface interfacing with a Leaflet map in a Geographic Information System (GIS). The Haversine method is employed for precise distance computations between LoRA Gateway, information about fish distribution, and unfavorable weather conditions within the specified area. the resukt show that The distance displayed on the website with the haversine method with excel calculation comparison produces an error calculation of 0.157%, while the percentage error for GPS latitude accuracy is 0.000116% and longitude percentage is 0.000002%. RSSI performance at LoRA ranges from -57dBM at a distance of 50m and -121dBM at a distance of 1500m.

Exploring the Confluence of Technology and Driving: An Examination of Advanced Driver Assistance Systems

Sheela S Maharajpet — 2024-02-23

This paper architecture analysis highlights the key components of the ADAS design, including the sensors, perception layer, decision-making layer, and action layer. It explains the flow of data through the system and how sensor fusion contributes to the creation of a comprehensive image of the car's surroundings. It goes on to cover further ADAS features and their advantages, such as automated braking, adaptive cruise control, traffic sign recognition, and blind-spot detection. The hopeful future of ADAS technology is highlighted in the article's conclusion, along with how it might change driving habits, boost traffic safety, and enhance driving in general. It draws attention to the critical issues that require more study and development in order to solve them and open the door for ADAS to be widely used in a variety of traffic situations, particularly in India.