http://repository.rmutp.ac.th/handle/123456789/86 Tue, 26 Aug 2025 10:14:45 GMT 2025-08-26T10:14:45Z http://repository.rmutp.ac.th/handle/123456789/4113 Application technology for studying and development of online attendance system Prakobkit, Surasit; สุรสิทธิ์ ประกอบกิจ The system of recording time in - out through the online system will help facilitate those who enter - leave the agency. That can record the time to attend activities anywhere and help people work easier by bringing information from a central database to connect with users. Nowadays, the way of work has begun to go into a digital format that only requires fast, accurate and convenient data linking. Entering or importing more than necessary data will result in delays. Authentication when entering and exiting an agency is useful in identifying identity and location by storing it as a database for further analysis. Therefore, this research presents the application of technology to study and develop an online time attendance system. instead of scanning this hand clock machine and signing of time stamps รายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2565 Wed, 31 May 2023 00:00:00 GMT http://repository.rmutp.ac.th/handle/123456789/4113 2023-05-31T00:00:00Z http://repository.rmutp.ac.th/handle/123456789/4112 Analysis of under voltage in power distribution model Rugthaicharoencheep, Nattachote; นัฐโชติ รักไทยเจริญชีพ; Boonthienthong, Manat; มนัส บุญเทียรทอง; Woothipatanapan, Sakhon; สาคร วุฒิพัฒนพันธุ์; Nedphokaew, Supawud; ศุภวุฒิ เนตรโพธิ์แก้ว; Chalangsut, Narate; นเรศ ชลังสุทธิ์ Voltage drop is one of the power quality problems affecting power users. This happens due to the higher demand for electric power. Or a short circuit in the transmission system. This causes a voltage drop is one of the power quality problems affecting power users. This happens due to the higher demand for electric power. Or a short circuit in the transmission system. This results in drop in Solving of voltage drop problems in power distribution model with distributed generator were presented with MATLAB program by installing a generator in the distribution system. Therefore simulated a case study 5 case 1 simulation by not installing a generator at any bus, case 2 simulation by installing a Generator at bus 1, case 3 Simulation by installing a Generator at bus 18, case 4 simulation by Generator installed at bus 33 and case 5 simulation by Generator installed at bus 13, 17, 21, 31 to study the suitable location of generator installation to solve the problem of voltage drop. รายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2565 Wed, 31 May 2023 00:00:00 GMT http://repository.rmutp.ac.th/handle/123456789/4112 2023-05-31T00:00:00Z http://repository.rmutp.ac.th/handle/123456789/4111 An application of machine learning algorithms to identify success factors being promoted by repetition online learning Sirithumgul, Pornpat; พรภัทร์ ศิริธรรมกุล This research suggests an add-on working compatibly with Google Forms to construct multiple-choice questions (MCQs). This add-on comprises two main components, including software for constructing MCQs, and a data storage for collecting data used to compose MCQs. I demonstrated effectiveness of the add-on by applying it in the context of repetition online learning in which students could learn, relearn, and take an exam of which MCQs generated by the add-on. At the last step of this research, I suggest using a sentiment analysis method – based on natural language processing and machine learning to find environmental factors and teaching strategies suitable for the repetition online learning. รายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2565 Wed, 31 May 2023 00:00:00 GMT http://repository.rmutp.ac.th/handle/123456789/4111 2023-05-31T00:00:00Z http://repository.rmutp.ac.th/handle/123456789/4110 Solving the problems of machinery in the fruit juice processing industry of community-based beverage beverage processing community groups, Khlong Chinda Sub-district, Sam Phran District, Nakhon Pathom Province. Nedphokaew, Supawud; ศุภวุฒิ เนตรโพธิ์แก้ว This research presents the processing of fresh guava into guava juice product. to be kept for consumption and distribution in the local area It is an alternative career path that helps rural farmers earn more. and create additional careers for the family But farmers still lack the correct technology, tools and processing methods in each production process. Therefore, there was a problem of insufficient cleanliness, taking a lot of time, resulting in unacceptable quality and the production is low, the postharvest engineering research group has conducted research to find suitable guava juicer. This study is based on working principles of food processing equipment in general use. Come as a guideline to develop, improve and create prototypes. The original guava juicer was a grater roller squeezer. There is a guava-sized subsystem consisting of a sub-chamber with grated rollers and the waste water barrier system consists of a juice sieve chamber, a waste separation room, a spiral conveyer and a sweeper set. various parts that come in contact with the guava juice is made of stainless steel The power source uses a 1-horsepower electric motor, a single-phase electrical system, a voltage of 220 volts. The machine has the ability to block water at a rate of 250 kg / hour. The juice obtained must be filtered out again with a centrifugal bag filter capable of filtering water at a rate of 50 liters/hour. The prototype guava juice machine costs 40,000 baht, and the centrifugal filter bag costs 5,000 baht. With just one such machine, each of these machines can produce 28,000 liters of guava juice/year (112,000 bottles a year), able to get a return in 0.08 years, with an average processing cost of 4.48 baht/bottle, which is appropriate in engineering economics. In investment, use a ready-to-drink guava juice machine. Fresh guava ingredients are available throughout the year and have 200 business days/year. รายงานวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2564 Wed, 31 May 2023 00:00:00 GMT http://repository.rmutp.ac.th/handle/123456789/4110 2023-05-31T00:00:00Z