bluuebunny/crossref_metadata_2025_split huggingface dataset:
Model of Organization and Determination of Tariffs in the Control of Justice, Expective and Efficient Telecommunication Towers
Authors: Sesung Rusdianto , Kurniawan Fredy , Noor Al Azam Moh. 
Published: July 2020

Abstract
When the formula for calculating the RPMT tariff does not have a standard calculation technique, the implementation of the calculation of the RPMT tariff between one area and another is different. Therefore, it is necessary to do a theoretical and empirical study to find the ideal RPMT calculation formula according to the Constitutional Court Decision Number 46 / PUU-XII / 2014. The results of the study show that the ideal pattern of RPMT calculation is that calculations based on Article 151 of the PDRD Law as it is reinforced by the Court of Constitution through Decision Number 46 / PUU-XII / 2014 which have canceled the Explanation of Article 124 of Law No. 28 of 2009 on the grounds that the imposition of a levy tariff that provides a maximum limit of NJOP without accompanied by a clear calculation system does not provide legal certainty that will cause injustice in its application. So the Central Government must immediately compile and discuss the Draft of Ministerial Regulation on Implementation and Retribution.
Analysis of Modal Shift to Support MRT-Based Urban Transportation in Jakarta
Authors: Febriani Devi , Mega Olivia C , Aniisah Sholilah Sita , Hidajat Masjraul 
Published: July 2020

Abstract
As a metropolitan city with large population, Jakarta requires adequate public transportation system for its alternative solution to support the activities of people. Mass Rapid Transit (MRT) is a public transportation system that goes in high mobility rate to transfer or carry passengers in large number without entry barriers This paper study about prospective passengers of Jakarta’s MRT, their interest to shift in commuting choices into MRT, willingness to shift (WTS), and willingness to pay (WTP). The research used stated preference with direct surveyes to customer. The analysis of modal shift (WTS and WTP) was conducted by parameters of urban transport: affordability, availability, accessibility, and acceptability. The result is most of respondents are willing to shift to MRT because of its faster, more comfortable, no traffic jam, more safe, cheaper, and other, and they even willing to pay additional fare from their current mode. And people who unwilling to shift to MRT due to the distance of the nearest stations is too far.
Comparison of the Effectiveness and Efficiency on Cessna 208 with DHC 6-300 Twin Otter for Flights in Inland Papua
Authors: Nanda R F , Nugraha M P , An C , Cahyanti D E 
Published: July 2020

Abstract
Aircraft selection is very important aspect to increase the productivity and profitability of an airline company. However, there are still many airlines that are unaware of how a right selection of aircraft type can influence operational costs. Therefore, calculating the operating cost of the aircraft is necessary so that airline companies can maximize profits and can compete with highly competitive conditions. The purpose of this study is to estimate the calculation of operational costs for the type of aircraft Cessna 208 and DHC 6-300 Twin Otter which have already been used for flights in the inland area of Papua. This study is also aimed to find out what type of aircraft is more effective and efficient in terms of operating costs. The method used in this study was qualitative with a descriptive and explorative research technique. The results of this study shows that the DHC 6-300 Twin Otter type aircraft were more effective and efficient. Consequently, the airline can consider which type of aircraft is to be used in rural Papua.
The Implementation of Barcode on Warehouse Management System for Warehouse Efficiency
Authors: Amanda Istiqomah Nadya , Fara Sansabilla Putri , Himawan Doddy , Rifni Muhammad 
Published: July 2020

Abstract
Technology has the power to affect and shape modern life aspects. Technology has speed up and simplify every task. One of those technologies that we currently use is Barcode. Barcode system can be implemented in the warehouse management system. By using Barcode in every process of the warehouse management system, it helps to minimize human error and provide accurate data in a real-time. Barcode also helps to integrate every process and improves efficiency in the warehouse management system. However, there are lots of warehouses that using manual handling. Therefore, in this research authors would like to discuss about the implementation of the barcode in the warehouse management system to improve warehouse efficiency. This research is conducted by using the qualitative method because this method will explain in depth the process in the warehouse management system as well as data collecting by conducting a semi-structural interview. Authors recommended barcode implementation in the warehouse management system to achieve warehouse efficiency.
An acoustic system for EOL engines diagnoses in hot test cells
Authors: Masullo M , Maffei L , Bianco B , Ambrosio V , Ricciardi S 
Published: July 2020

Abstract
End of Line tests have a crucial role in industrial processes to validate the products’ quality. In automotive industry, engines at the end of assembling process are fully tested within hot test cells at different working conditions by mean specific test cycles. Vibration monitoring is widely used in order to identify potential faults in the assembly process. This contact technique leads to several disadvantages, mainly due to the accessibility and the characteristics of surfaces for accelerometers mounting (e.g. rotating parts, geometries complexes, high temperatures) and to the time-consuming setup procedures. These limitations can be overcome by using microphone sensors. This paper describes the development phases of an acoustic based fault diagnosis system, its integration on hot test cells and the results obtained over large number of engines tested. By mean some specific technical solutions the acoustics approach in the EOL fault diagnosis of combustion engines has showed itself to be compatible with the characteristics of the production industry environment, providing reliable and repeatable results. The latter has been demonstrated also by comparison with the traditional accelerometer technique.
Complex composite technology investigation: simulations and experimental results
Authors: Viscardi Massimo , Arena Maurizio , Napolitano Pasquale , Iaccarino Paola , Cerreta Pietro 
Published: July 2020

Abstract
The paper deals with discussion of research activities within ITEMB (InTEgrated Full Composite Main landing gear Bay Concept) framework, an EU Clean Sky 2 program coordinated by Airbus. The driving motivation for the investigation on such a technology was found in the opportunity to design a main landing gear bay in a full composite configuration: rational approaches have been implemented in an efficient testing stage providing the necessary database for the static qualification of the conceived design. Advanced and innovative solutions for a “more integrated” system were duly analysed and experimentally validated thus proving the overall device compliance with industrial standards and applicable airworthiness requirements.
Conceptual Design and Optimization of 2-seater Seaplanes
Authors: Aroonsaengmanee Cheewan , Watjatrakul Boonchai , Nontakaew Udomkiat 
Published: July 2020

Abstract
This paper presents the conceptual design and optimization of 2-seater seaplane. A design code was developed from MATLAB with optimization toolbox. Design synthesis contains aircraft weight, performance, aerodynamics, aircraft stability, engine sizing and ship hull design according to user requirements and Standard Specification for Design and Performance of a Light-Sport Airplane. The seaplane take-off weight is used as the objective function to minimize subjected to design constraints. The optimization process makes use of the MATLAB GA-hybrid scheme (Genetic algorithm and Fmincon) which is faster and more efficient than the genetic algorithm or gradient-based approach. The optimum designs were obtained. The influences of design requirements and constraints were investigated. The outcome of the program is an optimum design of a single-engine 2-seater seaplane.
Analysis of Torsional Vibration Reduction on Automobile Cardan Shaft by using Composite Materials
Authors: Le VanAnh , Quang Nguyen Thanh , Quan Le Hong , Tran PhucHoa , Nguyen TienTan , Nguyen Xa Hoi 
Published: July 2020

Abstract
The Cardan shaft is of interest because it transfers torsional loads from the gearbox to the rear axle for vehicle motion. Central to the entire discipline of the Candan shaft is the concept of the dynamics of the Cardan shaft. This concept can be very complex because one head of the shaft is fixed to the gearbox, while the other end can move in the vertical plane when the vehicle is running on an uneven road. The Cardan shaft is twisted and bent at different rotational speeds. When the torsional oscillation frequency of the Cardan shaft coincides with one of its natural frequencies, it can induce resonance and causing structural damage. The paper presents the analysis of the Cardan shaft’s natural frequencies with two different materials: conventional sheet metal and composite material. The calculations can be used as the basis for designing the Cardan shaft in the vehicle powertrain system of the vehicles. These results further support the idea of using composite materials for the Cardan shafts in the automotive powertrain system, and composite materials for some other shaft parts in the vehicle.
Reliability-based Design Optimization of Classical Wing Aeroelasticity
Authors: Sleesongsom S , Yooyen S , Prapamonthon P , Bureerat S 
Published: July 2020

Abstract
Flutter speed of aircraft is very important and needs to be firstly specified before a certification applied for a new aircraft by airworthiness regulator to make sure that the aircraft is free from flutter in its flight envelope. By assuming geometrical and physical parameters known, the speed is usually estimated from deterministic analyses in a design stage. In practice, some parameters are finitely measured by observing, especially for the geometrical parameters, material properties and so on due to the random in nature, which causes uncertainty of information often called uncertainties. The purpose of this paper is to combine reliability analysis and optimum design of aeroelastic aircraft wing. The classical two-dimensional wing with a typical airfoil section is used as an example in this study. To quantify uncertainty in the design of flutter speed, the discrete-time aero-elastic model and worst-case scenario are applied. Furthermore, the comparison between optimum design with/without reliability is provided in this study. The results show the proposed technique leads to the flutter speed being more conservative and realizable compared with the traditional technique.
Nonlinear Responses of An Unbalanced Overhung Rotor-Short Journal Bearing System with Some Bifurcation Results
Authors: Atayagul P , Kamnerdthong T , Songschon S 
Published: July 2020

Abstract
Both autonomous and non-autonomous nonlinear systems display complex responses including the transient and long run responses. An overhung rotor-short journal bearing system (ORSJB) is the excellent paradigm exhibiting nonlinear responses and of practical importance. The unbalanced overhung rotor-journal bearing system is formulated by using modified Laval-Jeffcott rotor model. The nonlinear fluid forces model of the short journal bearing is adopted and rearranged in a suitable form for numerical analysis. This paper investigates numerically a bifurcation point, transient and long run responses of the ORSJB system. The rotational speed is preferable bifurcation parameter herein. The ORSJB system without unbalanced eccentricity for the selected parameters yields the bifurcation value of Ω = 3.0091. Limits cycles in the long-run responses with eU
=0.002 m and without unbalanced eccentricity at long run are presented in the bifurcation regime at the speed of Ω = 6.6869 and Ω = 0.01671 respectively. The transient response with eU
=0.002 m at the speed of Ω = 4.7142is elucidated. The evident results in this paper give only a partial view of bifurcation behaviours. Bifurcation analysis is a useful tool for design and operation overhung rotor dynamic systems.
Effects of Waveguide Position on Electric Field and Temperature Profile in Natural Rubber Gloves during Vulcanization Process Using Microwave Energy
Authors: Keangin P. , Narumitbowonkul U. , Rattanadecho P. 
Published: July 2020

Abstract
Natural rubber gloves (NRG) become a broader industry with fierce competition and demands. The vulcanization process is the most important and takes the longest time in the cycle period of the NRG manufacturing process, so it becomes of paramount importance to improve this process. The purpose of this research is to experimentally and computationally study the characteristics of the electric field as well as temperature profile in NRG during the microwave vulcanization process. The effects of position of waveguide placement are investigated for nine different positions. The experiment of NRG microwave vulcanization is performed for temperature distribution measurement. Three-dimensional models of NRG and microwave oven are considered. Finite element method (FEM) is utilized to solve a mathematic model of the transient Maxwell’s equation coupled with the transient heat transfer equation in order to determine the electric field and temperature profile via computer simulation. The computer simulation results are validated against the experimental results. The validation confirms that the computational model is able to represent the practical transport phenomena in NRG with high accuracy. The outcomes clearly reveal that the position of waveguide effects on the electric field as well as temperature profile in NRG during the microwave vulcanization process. The positioning of waveguides on both the front and backsides on the opposite side of the microwave oven provides higher intensity electric field and higher temperature profile than the positioning of waveguides in the middle of both the front and the backsides of the microwave oven. In addition, the middle backside is the appropriate position for waveguide in which NRG is uniformly dry and not burnt or overheated. However, it is found that there is no direct relationship between the electric field and temperature changes. This research guides to essential aspects of the design of NRG vulcanization to improve the efficiency of microwave and heat delivering along with other heating systems to heat any sorts of material.
Investigations of Stack Ventilation Operations Using An Energy Modelling And The Bas System
Authors: Woradechjumroen D , Tongshoob T. 
Published: July 2020

Abstract
Green buildings have been intensively constructed due to energy crisis and damaged environmental issues. Additionally, a green building focuses on efficient resource utilization and reducing environmental damage. Mechanical designers emphasize solving energy problem issues in large commercial buildings via a stack ventilation application; it can be used to reduce cooling load and mechanical fan power consumptions. However, stack ventilation installation has been problematic due to Thailand climate, because heat is absorbed on the lower floor of a building causing higher temperature than upper floors; this issue obstructs buoyancy force. Without consideration of the concern, mechanical designers may misunderstand stack ventilation operations from its theory. To avoid the issue, this research applies the three software for assuring the performance composing of (1) LoopDA for stack ventilation simulation to acquire different temperatures for buoyancy force; (2) SketchUp for developing a simplified building configuration; and (3) TRNSYS used for full energy modelling with and without stack ventilation. The energy modelling is validated via the existing building automation system (BAS) data in the example building with the accuracy within ±10 %. The verified building model can be further used to test the stack ventilation operations via the potential simulation instead of sensor installations.
Rapid Fabrication of Close-Typed Electrowetting on Dielectric Devices
Authors: Sukthang K , Pengwang E , Tuantranont A , Wechsatol W 
Published: July 2020

Abstract
Electrowetting on Dielectric (EWOD) devices have becomes a common device for manipulating liquid droplets in chemical, electrochemical, disease diagnosis and biomaterial detection processes. EWOD devices are prefect platform for Lab-on-a-Chip devices due to their simplicity with no moving parts and high manoeuvrability precision. In this paper, the rapid fabrication procedure of close-type EWOD devices is proposed. The EWOD electrodes was designed to manipulate droplets as small as 8 microlitre. The experimental test reveals that the droplet velocity increases with the magnitude of applied voltage. The further experiment also confirms the capability of the fabricated EWOD on droplet dispersion, which is common requirement for Lab-on-a-chip applications.
Investigation on Mechanical Properties and Fracture Mechanism of Carbon Fiber and Glass Fiber Composite at Different Curing Temperature
Authors: Lin Ye Htet , Cuaiman T. , Karin P. , Charoenphonphanich C. , Larpsuriyakul P. , Ohtake N. 
Published: July 2020

Abstract
Weight reduction is one of the big challenges in the auto industry. In the aerospace industry, the high modulus of composite material makes weight savings to replace alloys such as aluminium and titanium. It is one way to reduce fuel consumption and reducing emissions in vehicles by using composite. Among them, carbon fiber and glass fiber are the most useful materials in composite to reduce the weight in vehicles not only in the automotive field but also in aircraft, marine, medicine, sport, etc. In this study, hand lay-up (wet lay-up) method is used to fabricate carbon fiber and glass fiber composites with different curing temperature 30°C (the equivalent of room temperature) until it is dry and 80°C for curing 6 hours. The strength of carbon fiber and glass fiber composites were increased over 10% and the hardness of carbon fiber composite was also increased two times at 80°C curing temperature. Furthermore, the fracture mechanism of carbon fiber and glass fiber composites were also observed by using Scanning Electron Microscopy (SEM) image processing method.
Development of On-The-Machine Robotic Mold-Maintenance System by Utilizing Electro Discharge Deposition Technology
Authors: Mutaguchi Takuma , Yanagihara Kiyoshi , Akashi Kouji , Tsuchiya Kensuke 
Published: July 2020

Abstract
Maintenance of mold in a regular schedule has emerged as powerful platforms for quality assurance of the product. One of the greatest challenges is it may cause a dangerous situation for workers in the process of repairing mold using manual operation. This study set out to investigate the usefulness of a robotic system based on the on-the-machine repair of the worn mold without detaching and attaching the mold. Specifically, an electrodeposition applicator for repairing is attached to the hand of the work conveying robot which is installed near the machine tool. This study employed a vertical articulated robot, which is equipped with various sensors. Fundamental electrodeposition experiments were performed using the constructed robot system. The results from the experiments showed the feasibility of the developed system.
The Effect of Particle Shape on Magnetic Field-Induced Rubber-Like Behavior of Ni-Mn-Ga/Silicone Composites
Authors: Sratong-on P. , Chernenko V.A. , Hosoda H. 
Published: July 2020

Abstract
The single crystalline of the prototype Ni-Mn-Ga ferromagnetic shape memory alloy exhibits a huge magnetic field-induced strain of 6% due to the re-orientation of twin variants. Therefore, it is promising as the magneto-driven actuator material. However, the magnetic field or mechanical stress applied along the orthogonal direction is necessary to restore the deformed bulk single crystal into the original shape. In order to avoid an application of the extra fields, the Ni-Mn-Ga particles/polymer composite is an alternative solution supported by the concept of the accumulated stress in a polymer matrix which drives a deformation recovery of the composite during switching off of the magnetic field. The objective of this study is to clarify the effect of embedded particle shape on the deformation recovery of Ni-Mn-Ga particles/silicone composites by using the finite element method (FEM) and to investigate the local stress distribution in a polymer matrix between either spherical or rectangular shape particles pairs, whereby to provide the guidelines for design/optimization of the magneto-strain-active Ni-Mn-Ga particles/polymer composites. The case studies of the simulation are divided into an isolated particle and a pair of particles, the particles being positioned either parallel or perpendicular to the applied magnetic field direction. Particularly, the simulations reveal that in case of 200 µm of the inter-particle distance in the pair of spherical particles aligned perpendicularly to the applied field, the polymer layer between particles generates the compressive recovery stress of -0.32 MPa, which is insufficient to restore the deformation of the embedded Ni-Mn-Ga particles during removal of the magnetic field. By contrast, the strain recovery effect can be achieved for the rectangular particle pairs, generating the stress concentration in a matrix of about -0.5MPa, in a similar condition and arrangement.
Texture Properties of a-2D Granular Mixture of an Angular Particle under Bi-axial Compression
Authors: Binaree Theechalit , Preechawuttipong Itthichai , Azéma Emilien 
Published: July 2020

Abstract
Utilizing Discrete Element Modeling (DEM), we investigate the shear strength properties and microstructure of 2D granular mixture composed of various regular polygonal particles (from triangle to icosagon and disk) under biaxial compression. Three cases were considered: 1) increase of proportion and angularity started from disk (S1); 2) increase of proportion by decreasing the angularity started from triangle (S2); 3) increase of proportion by random angularity started from disk (S3) and polygons (S4). The results show that the shear strength changes with the mean angularity. On the other hand, the packing fraction slightly varies with the mean angularity. At the microscopic scale, the granular texture in term of the force, the contacts transmitted the force higher than the average force (strong force) are oriented in the direction of externally applied loading but they represent only 40% of the total number of contacts. Besides, the tangential contact forces direction tend to be consistent with the maximum shear strength direction.
Yield Parameters for Iron Powder Compaction on Different Particle Size
Authors: Ogawa R , Fujii J , Taniguchi Y 
Published: July 2020

Abstract
Shear failure yield line in Drucker-Prager yield surface for iron powder on different particle size and amount of interparticle lubricant has been estimated. Critical stress state and uniaxial failure stress state have been determined by a single shear test and uniaxial failure test for a green compact. Compaction cap parameter has been estimated by the lateral force measurement test by instrumented die compaction system. By those estimations, materials input parameters for the Drucker-Prager Cap (DPC) model have been determined successfully, and differences in particle size and amount of lubricant can be recognized. Finite element method (FEM) analysis of simple closed-die compaction has been conducted. As a result, the materials input parameters for the DPC model on different powder properties have been successfully identified as the FEM analysis fairly predicts compaction pressure and density distribution on uniaxial compaction.