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Publication Metadata only Design and simulation of outbound functions in warehouse operations with queueing theory(2021-05-19) Worawut Han-Klup; Taweesak Samanchuen; Mahidol UniversityIn modern e-commerce, warehouse management is very crucial for overall service quality. Moreover, the cost of order picking in outbound logistics is estimated to be more than half of the total operating cost in warehouse activity. This work studies... the efficiency of these operations, the simulation method is utilized. The result shows that the simulation is adequate in approximating the optimal number of pickers and packers. This work is explained generally to be practical for business leading to futureItem Metadata only Improved simulation of lignocellulosic biomass pyrolysis plant using chemical kinetics in Aspen Plus® and comparison with experiments(2023-02-01) Jaroenkhasemmeesuk C.; Tippayawong N.; Shimpalee S.; Ingham D.B.; Pourkashanian M.; Mahidol UniversityThe successful use (for performance predictions, in previous work) of process modeling and simulation of fast pyrolysis plants has made these techniques imperative in the design and operation of the pyrolysis plant itself. The current work proposes... an expansion of pyrolysis simulation in the Aspen Plus® model for lignocellulosic biomass, which is based on the kinetic reaction mechanisms of different materials under varied operational settings. This simulation allows the yield prediction for both slowItem Metadata only Development of the Bipolar Junction Transistor Diagnostic Test (BJTDT) to explore the second-year undergraduate Myanmar electronic and Thai electrical engineering students’ understanding of BJT working principles and applications(2024-01-01) Khin M.N.; Nopparatjamjomras S.; Chittaree R.; Nopparatjamjomras T.R.; Khin M.N.; Mahidol UniversityA bipolar junction transistor (BJT) and its operation are fundamental concepts for the understanding of power electronics (industrial electronics), transistor-transistor logic (TTL), electronic switching, and signal amplification in modern...’s administration, limitations, the participants’ detailed context, and findings from a study that explores Myanmar and Thai second-year undergraduate students’ understanding of BJT working principles and applications. The results revealed that manyPublication Metadata only Indoor Air Monitoring in Restaurant Using Portable Electronic Nose(2018-12-12) Theerapat Pobkrut; Satetha Siyang; Treenet Thepodum; Teerakiat Kerdcharoen; Mahidol University© 2018 IEEE. The objective of this work is to examine the efficiency of the odor removal air purification systems which were installed in a Barbecue restaurant and a Hotpot restaurant. Portable electronic nose device was used for the assessment... of the odor so as to determine the best operating conditions for the purification system. This study is part of an attempt of the restaurants to reduce residual odor in their dining spaces, in order to increase customer traffic during the weekday lunch timePublication Metadata only Multiscale image analysis through the surface-shape operator(2000-07-01) Phongsuphap Sukanya; Ryo Takamatsu; Makoto Sato; Mahidol University; Saitama University; Tokyo Institute of TechnologyThis paper proposes a new operator called the surface-shape operator for describing image structure. We consider an image function as a bivariate surface, then established the surface-shape operator for describing the shape of each pixel compared... also extend the surface-shape operator to have the capability of describing multiscale topographic structures by incorporating in scale-space representation. The surface-shape operator has invariant properties under linear and monotonic gray-toneItem Metadata only Enhancement of Brake Pads Production Planning with Time Management and Process Condition Using VBA on Microsoft Excel(2023-01-01) Phalawan C.; Satthaphon T.; Unhapipat S.; Horbanluekit B.; Amornsamankul S.; Phalawan C.; Mahidol UniversityThis research aims to increase the efficiency of work management in the production planning process. This research uses an industrial engineering method based on a time and motion study to record operational data and create a standard planning... process in the production process. It also uses the VBA on Microsoft Excel to analyze data and facilitate the work of the operators. The results of time data recording can be used to calculate the standard time as part of setting work sequence standardsPublication Metadata only Development model of “Community college teachers’ professional learning community”: A case study of phang-nga community college, Thailand(2017-02-01) Lapasrada Wiangkham; Uthaithip Jiawiwatkul; Mahidol University) RELEVANT FACTORS AND CONDITIONS: trust, organizational culture, working environment which facilitate the operation, and leadership promoting. However, for the most effective operations, students should have opportunity for learning exchange partners..... The study found that the model consists of 4 elements as follows: (1) OPERATIONS: creating shared vision and goals, group development planning, knowledge sharing, development of teaching and learning management by peer assist and best practice learningItem Metadata only Business Process Re-engineering for Medical Supply Management: A Case Study of Operating Room(2025-01-01) Nantaritthanon P.; Liangrokapart J.; Nantaritthanon P.; Mahidol Universitycases, the variety of medical supplies utilized, and the time constraint have impacted the staff working hours and waiting time for the next patients. Enhancing efficiency of medical supplies management in the operating room can reduce delay time...Supply chain in Operating Room (OR) is different from other healthcare unit supply chain as it is specific, precise, and necessary to each surgical procedure and operations. With advancement in surgical technology, the increasing number of surgicalItem Metadata only State Estimation in Power Systems under Random Data Attack Using Correlation Matching, Semidefinite Relaxation, and Truncated Eigenvalue Decomposition(2024-01-01) Tausiesakul B.; Asavaskulkiet K.; Jeraputra C.; Leevongwat I.; Singhavilai T.; Tiptipakorn S.; Tausiesakul B.; Mahidol UniversityThis work considers a state estimation problem in modern power systems from the perspective of smart grids. Due to the use of digital technology, smart grids often encounter malicious data that is deliberately injected to attack their grid... operations. Such kind of perturbation could be targeted at any domain of a smart grid from household customers to bulk generation, leading to network failures and power disruption. To monitor the operational health of the smart grids, power system statePublication Metadata only Optimal design for energy usage of cooling system in animal farm using CFD model(2019-11-01) Chawannat Jaroenkhasemmeesuk; Nipat Noysiri; Teerachot Jumroonroge; Katayut Kamano; Rajamangala University of Technology Lanna; Mahidol Universityfor their hygiene. The major cost to operate an animal house is the energy cost to control the most suitable condition for animals. Thai agriculturists normally operated their farms based on their understanding or their own experiment without any analysis. This may... lead to the wrong solutions and unsustainable condition. In this work, the swine house was considered as a study case to optimize condition between suitable condition (thermo-neutral zone) for pigs and energy cost. The cooling system includes cooling