In the manufacturing industry, competition between companies is an inevitable phenomenon along with the spread of businesses in this field. To maintain competitiveness, making the right management policies, including in the calculation of production costs, is crucial. The determination of production costs must be done carefully in order to provide a balanced profit. This study aims to analyze the company's method of calculating production costs with a variable costing approach. The research design is descriptive with the use of quantitative data through secondary data sources. The results showed that the variable costing approach resulted in a fairly low amount of production costs, namely Rp. 6,165,220,371, compared to the company's original calculation of Rp. 6,271,616,917. Thus, calculating the production budget using the variable costing method can be an effective strategy to face competition in the manufacturing industry.

This article discusses the use of Coulomb's law and electric fields to improve air quality in conventional cars. This method utilizes electrostatic principles to attract and capture air pollutant particles. This research introduces the practical application of this concept by integrating electrostatic technology into car ventilation systems. Experimental results show significant improvements in the reduction of in-vehicle air pollutants, with the potential to improve the health and comfort of car users. With wider application, this technology can help reduce the negative impact of air pollution on the environment and human health.

The aim of this research is to produce learning media mobile interactive on the Basics of Electronics Engineering subject which is valid and practical for class X students at SMK Negeri 2 Solok. The method used in this research is method Research and Development (R&D) with a 4D development model consisting of 4 stages, namely Define (Definition), Design (Planning), Develop (Development), and Disseminate (Dissemination). This research uses an instrument in the form of a questionnaire. This questionnaire will be filled out by material experts and media experts in the validity test and filled in by students in the practicality test. Based on data acquisition and processing, this research obtained the following results. First, the results of material validation by material experts are in the "Valid" category with a total validity value by the three material validators of 0.967 and the results of media validation by media experts are in the "Valid" category with a total validity value by the three media validators of 0.967. Second, at the practicality test stage by students involving 15 students obtained a practicality percentage of 95.67% which was categorized as "Very Practical". Based on the results of this research, it can be concluded that interactive mobile learning media using Smart App Creator is suitable for use as interactive learning media in learning because it has been proven to be valid and practical.

Control chalrts alre one of the most widely used quallity interpretaltion tools to determine whether al process is within control limits or whether the calpalbility of al process is within the expected limits alnd criterial. In every production process problems alre often found such als product rejects alnd product defects. Control chalrts caln be used to monitor current alnd ongoing production processes. Observaltions were malde alt the Wilis Valn Jalval coffee industry localted in Kalre District, Maldiun Regency with robustal coffee types. The method used in this observaltion is descriptive with al qualntitaltive alpproalch through observaltion, interviews alnd documentaltion. The technique used in daltal alnallysis is using al P-chalrt. The alnallysis results show thalt coffee defects alccount for 1l0l% of the totall ralw malterialls used. To alchieve optimall production levels, compalnies must paly alttention to detalils thalt caluse production defects to optimize revenue alnd reduce loss falctors.

Truckloader (TL) is a tool that functions to move Fertilizer from the weigher (where the weighing and bagging process is) to the place of the pallet or to the place of the truck bed. Broadly speaking, this tool is in the Bagging 1B unit area. This truckloader has a digital counter, namely a counter which has the function of calculating fertilizer from the weigher to the truckloader. From this counter, this will later be used as a reference or comparison. In order to find out the amount of fertilizer on the pallet or entering the truck body, on the other hand it is also use it for the technician team as a reference for preventive maintenance and replacement of spare parts. So far, counter checking is done manually by visiting the field and seeing it in person. For this, the Internet of Things is needed so that work is more effective and easier for the monitoring process. By using Senesore infrared proximity as input to the Arduino Uno as an electronic circuit controller and running programs, 16x2 LCD as a display of instructions from Arduino, NodeMCU as a liaison between the microcontroller and Ubidots and to display digital data from Arduino. This counter tool will later be used to monitor the amount of fertilizer passing through truckloader via the Ubidots web. This system can display data on Arduino that can be viewed via the Ubidots web that has been made.

: Fire is one of the most detrimental hazards to the community, therefore a fire prevention system is needed to reduce the impact and losses caused by fire. This study aims to design a fire protection system that has a high level of reliability, capable of detecting various types of fires, this study aims to find out whether the provision of equipment in building A of Universitas PGRI Palembang has met the requirements according to the technical requirements of the fire protection system in buildings and the environment according to the regulation of the Minister of Public Works No.26/PRT/M/2008. The planning of the fire protection system in building A of the University of PGRI Palembang includes, planning the detector system, sprinklers, fire alarms, water volume and pumps. The results of the planning of this fire protection system are 22 detector points, 50 sprinkler points, a water volume of 190 m3, a water tank volume of 164 m3, a pump power of 112 kW, and a GWT capacity of 92 m3.

In a company increasing productivity is very important. This increase can be done by improving technological innovation. The technology that was redesigned was the roaster machine. The aim of this research is to make machine use and maintenance easier with new designs that may be more user-friendly and more sophisticated control technology or more durable materials that can improve machine performance and longevity. The method used in this research is the Zero One method. The Zero-One method is a decision development method that aims to determine alternatives (criteria). The results of the analysis from this research are to create a machine that can be made in accordance with ergonomic standards for workers, thereby reducing downtime and reducing production cycle times, thereby allowing for increased output without increasing working hours.
 

Telecommunications network planning is a crucial step in building an efficient and reliable communications infrastructure. In an era where connectivity is the backbone for various human activities, both on an individual and business scale, the importance of telecommunications network planning becomes increasingly apparent. In this abstract, we explain why telecommunications network planning is so important. First, careful planning ensures efficient use of resources, from frequency spectrum to hardware. Second, good planning can anticipate demand growth, ensuring that the network can grow in line with needs without sacrificing service quality. Furthermore, careful planning also considers security, privacy and reliability factors, which are crucial in a telecommunications environment that is constantly changing and vulnerable to threats. Thus, this abstract highlights the importance of telecommunications network planning in facing the challenges and opportunities in an increasingly connected world. With proper planning, telecommunications networks can become a strong backbone for social, economic and technological development.

Changes in global oil prices have been one of the main factors influencing the Indonesian economy for the last few decades. As one of the leading oil and gas producers in Southeast Asia, Indonesia is significantly affected by fluctuations in global oil prices and has a broad impact on various sectors of the domestic economy. This research explores the impact of changes in oil prices on Indonesia's trade balance, inflation, economic growth and fiscal policy. In addition, analysis is carried out at the micro level to understand the direct implications on key sectors, such as the transportation industry, manufacturing industry and energy sector

Data communication is a field of science that studies the process of sending data, as well as how data can be received from sending and receiving terminals. A computer network is a set of "interconnections" between 2 or more autonomous computers connected by cable or wireless transmission media. Cisco packet tracer is a network simulation application developed by Cisco as a simulator as a learning medium for Cisco devices. Peer-to-Peer (P2P) network simulation using Cisco Packet Tracer software is an effective method for understanding, designing, and analyzing P2P networks in a controlled environment. The method used is literature study and carrying out simulation practice on Cisco Packet Tracer software to simulate a network. This research method aims to outline the steps and procedures required to simulate a Peer-to-Peer (P2P) network using Cisco Packet Tracer software. This abstract presents a brief view of the simulation approach used to model and examine the performance of a P2P network using Cisco Packet Tracer contains implementation steps for peer to peer network simulation. Through simulation, in-depth performance analysis can be carried out on various aspects of P2P networks, such as throughput, latency and reliability. This allows researchers and practitioners to understand how P2P networks behave under various conditions. Thus, P2P network simulation with Packet Tracer provides a useful tool for researchers and practitioners to understand and optimize P2P network performance in various scenarios.