bluuebunny/crossref_metadata_2025_split huggingface dataset:
Shelf Life Evaluation of Instant Pasta in Two Different Packaging.
Authors: Murathathunyaluk S , Jindawanich P 
Published: October 2019

Abstract
The objective of this study is to evaluate shelf life of instant pasta which had been packed in two different packaging, type I is an OPP/MCPP sachet and type II is an OPP/CPP sachet, under accelerated condition (37°C, 85%RH) for 12 weeks. There were 2 index which were used to evaluate the shelf life, one was sensory tests and another one was moisture content in pasta. Assessed by sensory tests, the shelf life of instantly cooked pasta packed in type I and type II sachet, were revealed more than 12 weeks and equal 12 weeks, respectively. Likewise, the shelf life predicted on the basis of moisture sorption isotherm and water permeability of packaging material, were estimated at 119 and 46 days in OPP/MCPP and OPP/CPP sachets, respectively. According to these results, the quality changing of instant pasta measured during storage suggested that OPP/MCPP sachet had better protectively effect than the OPP/CPP sachet.
Texture Traits with Uniform-Quantization in Handwriting Documents for Digital Forensics Investigation
Authors: Pratiwi D , Syaifudin  , Rahardiansyah T , Hilman A , Anggriani W , Chairunnisa N 
Published: October 2019

Abstract
In crime and falsification related to documents are often difficult to verify orauthenticated by the authorities. This is the basis of research to develop a system in assisting digital forensics to investigate and seek the truth of the evidence in the form of digital handwritten documents. The steps that being taken by researchers are collecting and digitizing the documents into image form, converting color from RGB to greyscale, separate the object through thresholding, color histogram, uniform quantization from 256 to 128 of greylevel, texture feature extraction ie variance, skew, relative smoothness, entropy and mean, normalize the feature value and similarity measures through Euclidean distance calculations. From the results of testing of 10 data that has been matched with 20 training data, 6 documents successfully recognized correctly the authenticity of the document owner. Thus, the system in this study produces an accuracy of 60% and can be used to assist digital forensics in analyzing the authenticity of handwritten documents.
Experiment of Thermal Insulation Performance of Acrylic and Expanded Polystyrene for Chamber Wall
Authors: Laliyah Q , Bakti P , Ramadhani W S 
Published: October 2019

Abstract
Chamber with the controlled temperature is required in the energy efficiency test of a household product. Chamber wall plays an important role to keep the temperature inside the chamber so as not to be affected by the temperature from outside. Experiments were carried out to compare the thermal performance of two different material for chamber wall : 1) Acrylic and 2) expanded polystyrene. The boxes with dimension 40 x 40 x 40 cm were affected with fixed thermal loads in a climatic chamber. Meanwhile, temperature inside the box was monitored with data logger. The thermal loads for testing were 40°C, and 60°C. Based on the measurement, temperature in the acrylic box reach the load temperature from the outside and starts steady at 300 seconds, while the expanded polystyrene at 550 seconds. The result show that the insulating performance of expanded polystyrene is better than acrylic. The result of this study can be used not only for refrigerator manufacture, it can also use by another industry related to thermal dynamic. The industries include aeronautic industry related to aircraft wall coatings for external temperature protection, building industry in terms of building wall coatings to maintain temperature stability, and other related industries.
Preliminary Design of GL-1 Sailplane Cockpit Arrangement and Control Mechanism Based on EASA CS-22 Requirements
Authors: Mulyanto T , Zulkarnain M F 
Published: October 2019

Abstract
Sailplaning or gliding is one branch of aero sports activities in Indonesia under Federation of Aero Sport Indonesia (FASI). Until now, the most common sailplane used in Indonesia is still Schweitzer SGS 1-26, which is a single seated metal-fabric sailplane designed in 1955 and produced until 1979. The development of a new national glider to replace the Schweitzer SGS 1-26 had been conducted since 2013 and resulted in a design named GL-1. The EASA CS-22 had been chosen as certification basis for GL-1 as there is no equivalent yet in Indonesian CASR. A preliminary design of internal cockpit arrangement and control mechanism has been conducted. This study shows that the control mechanism using a combination of cable and push-pull rod arrangement satisfy the required control surface movement and limited sailplane interior space.
Analytical assessment on aviation practitioners needs for knowledge enhancement at the postgraduate level: an application of Fuzzy Delphi method
Authors: Mohammad M F N , Ghafar N H , Rahman N A , Abdullah R , Mayor F 
Published: October 2019

Abstract
Knowledge enhancement is essential to support continuous sustainability of organization in a competitive environment. It is not an exception to an aviation industry. In facing up with future challenges of industrial revolution 4.0 (IR 4.0), studies have shown that one of the issues addressed in ensuring it success is the importance of knowledge among employees. Various activities can be done to enhance knowledge such as by enrolling to academic (undergraduate or postgraduate) programs, attending short courses/training or sitting for professional certification. Furthermore, obtaining postgraduate degrees offers wide exposure to academic and industry environment. Therefore, the purpose of this study is to gauge the understanding on practitioners’ key reasons to further their education at the postgraduate level. Four major constructs established for this study to analyse the aviation practitioners’ intention to further study that are personal needs for continuing education, organization needs, source of funding and teaching and learning facilities. Document review were conducted at the beginning of the study to explore fundamental issues of knowledge enhancement needs among practitioners, meanwhile survey performed were analysed by using Fuzzy Delphi method (FDM). Findings shows that six elements (items) for the whole survey fulfil the criteria of threshold value (d construct) less than 0.2 and achieved the percentage of expert group consensus more than 75%. This research provides objective and constructive input to university on the major factors influencing aviation practitioner’s decision to further their study at the postgraduate level. The finding becomes avenues for university to draft a better postgraduate program to fulfil the requirement of industry and academic.
Design and Performance Analysis of Low Reynolds Number Propeller using Analytical Methods by Varying Blades Alpha Design
Authors: Haidar M D F , Moelyadi M A , Hartono F 
Published: October 2019

Abstract
In the past few years, the usage of Unmanned Aerial Vehicles (UAVs) aircraft has increased significantly, but the need for UAVs with higher performance is increasing also. Therefore, all systems of the UAVs must be developed to have high efficiency, including the propulsion system. It is necessary to perform some design and analysis tasks on low Reynolds number propeller, which is a commonly used propulsion system on UAVs, to have higher efficiency and improve the overall UAVs performance. In this paper, low Reynolds number propellers are designed using the Larrabee Design analytical method by referring to the “Master AirScrew 10x7E” propeller. Meanwhile, performance of the designed propellers is analysed by using analytical method of Inversing Larrabee Design method. At the design stage of low Reynolds number propeller, 42 variations of alpha design (αdes
) was inputted along the blades with uniform, linear, and quadratic distributions. Furthermore, the best design from these 42 variations was selected by performing two-stage scoring. At first stage scoring, 42 designs are selected to obtain 5 designs with the highest on-design efficiency. Then, performance of these 5 selected designs are analysed analytically along a certain range of advance ratio. Finally, second stage scoring is performed to obtain 1 design with the best overall performance.
Aviation and Aircraft Engine Emissions at Juanda International Airport
Authors: Chilongola F D , Ahyudanari E 
Published: October 2019

Abstract
Aviation industry growth has increased continuously over the years. Air transport demand continues to increase due to the reliability, time saving and efficiency. Aviation industry has impact on environment as a source of pollutant emissions. The estimation of pollutant emissions at taxi/idle, approach, climb out and take off of Carbon dioxide (CO2) and Nitrogen dioxide (NOx) at Juanda International Airport Indonesia was calculated using Advanced ICAO landing and take-off (LTO) cycle method. The CO2 emissions were 23.02 tons, 10.52 tons, 17.27 tons and 6.73 tons during taxi/idle, approach, climb out, take off respectively while NOx emissions were 0.03 tons, 0.03 tons, 0.12 tons and 0.06 tons for taxi/idle, approach, climb out and take-off respectively. Based on the results of the discussion it can be concluded that pollutant emissions and fuel consumption are positively related to amount of flight operation. The aircraft emissions affect the air quality around the vicinity of airport and lead to climate change.
On stabilizing hydraulic motion experiencing Stribeck friction via PI controller: Circle criterion approach
Authors: Tumbuan T P , Indrawanto  , Nurprasetio I P , Abidin Z 
Published: October 2019

Abstract
A Friction is inevitable in a hydraulic actuator due to the presence of seal. Unfortunately, the existence of friction makes the system prone to limit cycle oscillation as PI controller is applied. This research investigates the maximum integrator constant of PI controller that can be introduced to the system while maintaining global asymptotic stability in Lyapunov sense. This condition is achieved as the system complies with circle criterion. In this research, a simplified hydraulic system which behaves linearly is adopted. Thus, the only source of nonlinearity is the Stribeck friction. The main contribution of this research is a formulation of stable PI strategy that is free from the effect of inertia. The PI strategy is suitable for a hydraulic testing machine of which the mass of device under the test is varying.
Investigation of Aluminium and Copper Wound PMSM for Direct–drive Electric Vehicle Application
Authors: Dhulipati Himavarsha , Mukundan Shruthi , Chauvin Lucas , Riczu Christina , Edrisy Afsaneh , Kozdras Mark , Bauman Jennifer , Habibi Saeid , Tjong Jimi , Kar Narayan C. 
Published: October 2019

Abstract
This paper investigates aluminium and copper windings for a permanent magnet synchronous machine (PMSM) developed for direct–drive electric vehicle (EV) application. Previously, studies have been conducted on comparison of these windings in terms of thermal and electrical conductivity, cost and mass density. However, the impact of these windings on the machine’s performance in terms of efficiency and torque has not been analysed. In this paper, for the same machine volume and geometry, a comparative analysis of PMSMs with copper and aluminium windings has been performed in terms of efficiency, torque, weight, operating speed range, ohmic losses and temperatures. Furthermore, as these machines are developed for direct–drive EV application, drive–cycle-based analysis was conducted for urban and highway cycles for a 2013 Ford Focus vehicle dynamics model. For these drive cycles, analysis in terms of torque speed characteristics and maximum energy density efficiency for both the machines has been performed.
A Comparison Study of Magnetic Stirrer and Sonicator Technique to Disperse 1% Span20 Treated Layered Double Hydroxides (LDHs)
Authors: Teanmetawong S , Chantaramanee T , Lhosupasirirat S , Wongariyakawee A , Srikhirin T 
Published: October 2019

Abstract
Effect of particle size reduction and dispersion of 2-dimensional material, layered double hydroxide (LDHs), prepared by co-precipitation method with the primary particle size of around 100 nm, was investigated. Two simple laboratory dispersing techniques including magnetic stirrer, and sonicator were applied to disperse agglomerated LDHs in 1 wt.% Span20 solution, act as a stabilizer. Magnetic stirrer showed a cluster of agglomerate particles with improved dispersion while, agglomerates with single stack LDHs were presence in case of sonicator product.
Lithium Salt Doped Poly(Vinylidene Fluoride)/Cellulose Acetate Composite Gel Electrolyte Membrane for Lithium Ion Battery
Authors: Asghar Muhammad Rehman , Anwar Muhammad Tuoqeer , Rasheed Tahir , Naveed Ahmad , Yan Xiaohui , Zhang Junliang 
Published: October 2019

Abstract
In this study, composite gel electrolyte based on Polyvinylidene fluoride (PVDF)/cellulose acetate with the addition of different proportions of lithium nitrate (LiNO3) is prepared by a simple casting method. Salt doping effects on gel electrolyte membrane is investigated by scanning electron microscopy, X-ray analysis, DSC, FT-IR and TGA analysis. Salt doped gel electrolyte membrane shows a porous structure with a high uptake of 150%. Furthermore, with the addition of 20 wt% salt in the gel electrolyte membrane increase the ion conductivity from 0.21×10−3 S cm−1 to 3.0×10−3 S cm−1 at room temperature after soaking 1M LiPF6 EC/DEC liquid electrolyte. As compared with PP 2325 separator, pristine PVDF and PVDF/cellulose acetate gel electrolyte membrane, the salt doped PVDF/cellulose acetate membranes exhibit wide electrochemical window and lower interfacial resistance. Composite gel electrolyte membrane with 10 wt% salt contents possess 100% capacity retention after 100 cycles at 1C rate as compared to PP 2325 separator which shows only 87% capacity retention.
An adaptive single channel EMD-TNMF blind source separation algorithm for both instantaneous and convolutive mixed signal
Authors: He Pengju , Qi Mi , Liu Gangyi , Yu Zijiang , Fu Qiang 
Published: October 2019

Abstract
Single channel blind source separation (SCBSS) using time-frequency nonnegative matrix factorization (NMF) has some shortcomings, where the source number and convolution order must be known and it’s sensitive to the factors (e.g. window function, window length and overlap ratio of adjacent windows). To compensate these shortcomings that cannot meet the real application, we proposed an adaptive EMD-TNMF algorithm, which can estimate both the source number and the convolution order and is applicable to both single channel linear instantaneous and convolutive mixtures. Firstly, the single channel signal is mapped into multiple channels by utilizing empirical mode decomposition (EMD), and the number of independent sources is estimated by applying eigenvalue descent ratio of the IMFs’ covariance matrix. Secondly, the autocorrelation-based method is used to estimate the convolution order. Thirdly, the nonnegative matrix is constructed by adding one positive matrix (all elements are positive). Finally, in time domain, NMF algorithm is used to separate source signals. The algorithm’s performance is verified by two experiments where the single channel signal is linear instantaneous mixing of four artificial signals and linear convolutive mixing of two speech signals respectively. Results show that this algorithm can estimate the source number and convolution order correctly and obtain better separated source signals.
Gamification of an asynchronous HTML5-related competency-based guided learning system
Authors: Li Cheng Hsiu 
Published: October 2019

Abstract
Practice e-learning systems with traditional asynchronous drills are the most common assisted-learning tools for cognitive study, and they are often employed in instructional environments. Such systems provide learners with immediate feedback that enables them to develop cognitive abilities through constant learning. In this study, a novel, asynchronous HTML5-related gamified competency-based guided learning (CBGL) system was designed. The CBGL algorithm was embedded in the system to provide personalization for enhanced learning effects. This study used the core drivers of the Octalysis gamification framework to design gamified mechanisms that ameliorated the long and tedious CBGL processes. This study used the system satisfaction test to survey the flow experience of the participants and logged their learning behaviors for data mining. The results of system satisfaction analysis revealed that the system gamification generated a favorable flow experience among participants; they actively used the system to study and felt that the guided learning process was engaging. Results of the data mining analysis also revealed that the percentage of learners who completed the CBGL process rose from 58.3% to 79.2%. Therefore, the gamified mechanism helped participants overcome the boring and lengthy learning processes of the CBGL system.
Towards cloud-based STEP-NC to enhance interoperability in global manufacturing
Authors: Afanasev S , Zhao G , Xiao W 
Published: October 2019

Abstract
STEP-NC has been under research for several years, and its manufacturing interoperability is still considered in its infancy. Until recently, seldom STEP-NC compliant CAD/CAM/CNC systems were commercially materialized. The reasons why the CAD/CAM and CNC vendors have not been interested in becoming STEP-compliant are diverse. One of the major is the unmatured interoperability in handling uncertainty in highly dynamic production contexts. STEP-NC requires enormous manufactured data being exchanged among different STEP-compliant systems, whereas little lack of consistency may course the failure of final manufacturing results. The low-volume volatile component production and the complexity of STEP-NC data bring much more risks of uncertainty and unforeseen events, which generally propagate across the different stages of production. The authors believe that the combination of STEP-NC and cloud manufacturing will be the key solution for dealing with the current dilemma of STEP-NC and can promote the intelligent manufacturing into reality. This research proposes a framework of the STEP-NC compliant manufacturing in a cloud environment.
The determinants of smart tourism behavior: evidence in wine tourism context
Authors: TsaiFaYen  , YuJanShen  , Hung ChienJen 
Published: October 2019

Abstract
The main purpose of this study is to investigate theinfluence of satisfaction, involvement, and subjective norms on tourists 'behavioral intentions at a historic district at Yibin, China. This study also attempts to examine the mediating effect of involvement, and subjective norms on the paths from satisfaction to intentions. Data were collected via a nonsite survey and analyzed using a structural equation modeling approach. Results indicate that satisfaction, involvement, andsubjective norms directly contribute to the formation of tourists' intentions of the historic district. Tourists' involvement is positively associated with tourists' satisfaction. Both involvement and subjective norms fully mediates the relationship between satisfaction and intentions. Theoretical and managerial implications are elaborated.
A development and application of maintainability evaluation system using immersive VR
Authors: Wang Meihui , Li Yongxiang , Lyu Chuan , Liu Xi 
Published: October 2019

Abstract
Immersing into virtual reality (VR) is a perception of being physically present in a non-physical world. Using immersive VR in maintenance brings great conveniences. For example, using virtual human operating in hazardous environment before the real person, which can prevent being hurt. In this paper, a system of immersive virtual maintenance (IVM) is presented. It is divided into three parts. The first part is Input, which contains the maintenance task and maintenance design. The second part is Method, with which making the virtual human and the users act in a unified way. The key to build IVM system is the interface between the motion capture system and virtual simulation software. The third part is Output, which presents the maintainability evaluation results. This paper focuses on how to build IVM system, the difficulties and solutions also be detailed. At last, a simple application is given
NOx emission from a sulfur recovery unit thermal reactor with rounded corners or a vector wall
Authors: Yeh Chun Lang 
Published: October 2019

Abstract
A sulfur recovery unit (SRU) thermal reactor is important equipment in a sulfur plant. Because its operating temperature is very high, the nitrogen oxides (NOx) produced by a SRU thermal reactor is one of the possible sources of air pollution. In this paper, NOx emission from a practical SRU thermal reactor is analyzed. Both the prototype thermal reactor and its modifications, including modifying the reactor geometry and using a vector wall are compared. Simulation results show that the SRU thermal reactor with a radius of curvature 1m at the zone 1 corner has the lowest NO emission. Compared with using a choke ring, the NO concentration at the reactor exit is higher using a vector wall.
An invention of multifunction washing ball
Authors: Liu Che Wei , Wu Chuan Wei 
Published: October 2019

Abstract
Ultrasonic clean is a very fashionable trend in cleaning appliance and tools in domestic and international markets, from washing machine, electronic toothbrush to household, ultrasonic cleaning machine (for jewelry, watch, glasses, etc.) Every ultrasonic related thing is very popular and the price is raised immediately. For example, the washing machines under the same brand, the one with ultrasonic will be USD 180 more expensive than the other one as the price could up to 8 times of difference for the ultrasonic function of the electronic toothbrushes of the same brand. Multifunction washing ball is the pioneer creation of the world, which is advanced and can be applied for many purposes. It can replace various cleaning household appliances in modern family with the remarkable cleaning effect. Ultrasonic current powerfully get rid of the hidden dirt among the clothes fiber. It will definitely be popular with the collocation of the trend. In the environmental protection, it reduces washing powder usage, minimum power consumption, save the water, cherish the resource on earth.