bluuebunny/crossref_metadata_2025_split huggingface dataset:
Usability Analysis of an Academic Faculty Website: A Case Study of the Selected University
Authors: Soewardi H , Ramadhan M H 
Published: January 2020

AbstractWebsite constitutes a pivotal element in an academic institution. It is useful to provide academic information for stakeholder requirements like final scores, academic calendar, scholarship, student competition, etc. This paper presents an investigation about the level of usability of the website at the selected faculty of the university in Indonesia based on 5 dimensions, namely learnability, efficiency, memorability, error, and satisfaction. It is noteworthy that the faculty should supply the information in detail and accurately. However, as a matter of fact, few of a faculty website in some certain universities sometimes experiencing matters for the user. Thus, it is crucial to do the analysis of the usability of the website at the faculty level. A qualitative study was conducted by distributing some Likert-scale questionnaire to stakeholders that consisted of students, academic staff, student’s parents, and lecturers. The questionnaire contains 25 statements divided into five groups of elements by referring five dimensions above with each group having 5 questions or statements. The non-parametric statistic was conducted to test the hypothesis. The result of this study shows that the website of the selected faculty is classified into a moderate level with 68% of usability grade. Thus, this study recommends that the faculty improve its website in the layout of menu, content, add some features to ease login and increase usability level.
Recycled Polypropylene Filament for 3D Printer: Extrusion Process Parameter Optimization
Authors: Herianto  , Atsani S I , Mastrisiswadi H 
Published: January 2020

Abstract
The presence of recycled plastic materials for the 3D printing process expects that the production process will be more environmentally friendly and solve the problem of plastic waste globally. However, recycled plastic as a filament material in the 3D printing process is still limited. One of the ways to make recycled plastic filaments is by extrusion. This research aims to optimize the extrusion process parameters in the manufacture of recycled plastic filaments (Polypropylene) that have never been conducted before. The extrusion process was analysed using the Taguchi and ANOVA methods. The results of this study indicate that the spooler speed of 4 rpm, extrusion speed of 40 rpm, and extrusion temperature of 200°C in the parameter setting produce an average filament diameter of 1.6 mm. However, filaments made from Recycled Plastic (Polypropylene) have a rough and easily curved surface, so further research is needed.
Characteristics of Brake Lining Cessna Caravan Type 208B
Authors: Suroso I 
Published: January 2020

Abstract
The brake system is a braking system located on the landing gear on an airplane. Brakes are one of the most important components of safety, and performance in the airplane. This study uses the observation method, the interview method with the engineer and the experimental method at The Material Laboratory, Polytechnic Ceper, Klaten. The purpose of this study is to determine the function, characteristics, and effect of chemical compositions on the characteristics of the brake lining on the Cessna Caravan Type 208B aircraft. The results of the brake lining as, and characteristic of brake lining are reducing speed and stopping the aircraft wheels. The characteristics of the brake lining as follows result in a hardness value of 205 VHN and the chemical composition consist of Fe 95,9%; Cu 0.8%; Carbon 0,33%; 0,235% Si; Mn 0,468%; Al 0,235%; Mo 0.151%; and Cr 0,772%. This brake lining materials are included in medium carbon steel with chromium alloy. The brake lining material is steel medium carbon which has hard, resistance wear, durable use life. The influence of chemical composition on characteristics of brake lining on this aircraft is the higher the composition carbon the resistance to wear.
Adoption of 3D Printing in Indonesia and Prediction of Its Application in 2025
Authors: Ismianti  , Herianto  
Published: January 2020

Abstract
Additive manufacturing, known as 3D printing (3DP) is currently growing rapidly in many countries. The applications of 3DP may vary in each country, depending on the country’s 3DP development and local needs. This study aims to find out the adoption of 3DP in Indonesia and the prediction of its application in the future. Data were collected either by interviews or questionnaires. Data retrieval was done 3 times. First, data were collected from society with 109 respondents. The second data comes from 3DP user with 40 respondents, and the third data comes from the expert with 15 respondents. This study used a pairwise comparison method to predict the application of 3DP in the future. The results of this study indicate that 67% of respondents in society have known about 3DP. The number of 3DP users was increasing every year, a considerable increase in the last 3 years. From the pairwise comparison results, it was found that in the health sector, the highest prediction is in the fabrication of medical equipment. In the industrial sector, the highest prediction is fabrication for electronic and robotic. Then in the sociocultural sector, the highest prediction is education.
Design of SCADA for Protection System of Uncoiled DC Motor’s Temperature using PLC ABB AC 800PEC Based on Wonderware Intouch
Authors: Putra J T , Diantoro A , Oktiawati U Yusmaniar , Surriani A , Pradana A B , Subekti L 
Published: January 2020

Abstract
Continuous Tandem Cold Mill (CTCM) operates many types of DC motor for various processes. The continuity of the DC motor is very important to ensure the automation process are working perfectly and safe. One of the abnormal condition when operating DC motor is overheating at Field winding and Field bearing. Therefore, this research is needed to avoid further damage in the DC motor by designing and implementing protection system of temperature based on PLC (Programmable Logic Controller) ABB AC 800PEC and PT100 sensor. SCADA (Supervisory Control and Data Acquisition) system was implemented so the operator can supervise the motors. When temperature is increasing and higher than the allowed maximum temperature, the system should generate Fast Stop signal to stop every process that have been running at entry section CTCM. The protection system was implemented successfully and generated Fast Stop signal when the Field winding temperature was higher than 100-degree Celsius or when the Field bearing temperature was higher than 75-degree Celsius.
Corn husk Fibers Reinforced Polyester Composites: Tensile Strength Properties, Water Absorption Behavior, and Morphology
Authors: Sari N H , Suteja S 
Published: January 2020

AbstractThe effects of fiber content and immersion time in the water on the tensile, morphology and water absorption properties of composites made from corn husk fiber/polyester have been studied. Composite made with a variety of different fiber contents namely: 20%, 25%, 30%, 40%, 50% and 60% respectively. All composite specimens were immersed in water for 24 h and 72 h. The effects of fiber content and time of immersion of composites in water have been determined by examining the nature of tensile strength, water absorption behavior, morphology. The results demonstrated that after soaked in water for 24 h and 72 h, the water absorption properties of the composites increased with increasing fiber content. The tensile strength and modulus of elasticity of composites tend to increase from 20% to 30% fiber content after immersed for 24 h, and then decrease with increasing fiber and soaking time because the interface between fiber and polyester becomes weak. These results suggest that corn husk fiber composites could have the potential to use as decking, siding, and exterior windows.
Online Consumer Segmentation Study Based on Factors Affecting E-Commerce Selection
Authors: Puspitasari N B , Pramono S N Widyo , Rinawati D I , Fidiyanti F 
Published: January 2020

Abstract
Indonesia has considerable e-commerce growth potential supported by the increasing number of internet users. The rapid growth of e-commerce is characterized by the increasing number of e-commerce resulting in the increasingly intense competition among e-commerce. The purpose of this study is to do online buyer segmentation based on the attributes of the website. The survey using an online questionnaire was given to 338 online buyers in Indonesia. Factor analysis is used to verify the construct model used using Confirmatory Factor Analysis (CFA). Finally, segmentation analysis is applied to identify groups of respondents and create their profiles. Based on segmentation analysis, the study identified five segments, namely, assurance seekers, secure seekers, convenience seekers, convenience and secure seekers, and social connectivity seekers. Each of the five segments varies greatly in the selection of websites for purchases and describes the differences in their online shopping orientation. Companies need to develop a plan to consider the unique characteristics of the online market segment to attract and retain users. The findings of this study can be used as guidelines for the development of a multi-dimensional strategic framework by online retail companies.
Applying eye tracker technology for analyzing user interface design of online transportation applications (case study: grab application)
Authors: Dewi D S , Ilmi N , Dewi R S 
Published: January 2020

Abstract
In the past few years, online transportation has gain popularity in Indonesia. Many passengers prefer to choose online transportation for traveling due to several reasons including accessibility and price. In response to this, several online transportations have been operating in Indonesia, the most popular one is Grab. Despite its popularity, little is known about the usability of its interface design in respect to specific groups of user especially for elderly. In order to provide information on how to better design online transportation application especially for elderly, this paper aims to analyze interface design of Grab application from the elderly point of view. For this purpose, an experiment was conducted by using the eye tracker. This technology has applied for different purposes including design and marketing research purposes. The experiment was conducted by involving 10 elderly participants with ages ranging from 55-69 years. The eye tracker data used in this study is a fixation number, fixation duration, saccade number, and saccade duration. The result of study reveals that gender influence the fixation number, fixation duration, saccade number and saccade duration. Eye condition also influences fixation number and fixation duration but not for saccade number and saccade duration. The highest fixation number occurred in the area of interest (AOI) 2 and the largest fixation duration is also in the area of interest (AOI) 2.
RTS Threshold Variation Study on Contention-based IEEE 802.11n EDCA for Real-time Services
Authors: Herdiniamy I A , Cahyadi E F , Nugraha E S , Yuliantoro P , Hwang M S 
Published: January 2020

Abstract
As a “wide-deployed” wireless local area networks (WLANs) standard, the IEEE 802.11n was designed to support a high data transmission rate (up to 600 Mbps) and maintain a compatibility with the previous versions. Due to a substantial demand of real-time data services, such as VoIP and video conference, an enhanced quality of service (QoS) mechanism become crucially important. The IEEE 802.11n standard inherits the enhanced distributed channel access (EDCA) mechanism from the IEEE 802.11e, as the MAC layer improvement. It classifies the traffic into four different classes of data, called access categories (ACs). However, EDCA still suffers from a data packet collision, caused by hidden nodes problems. The packet loss ratio and end-to-end delay increase along with the escalation of real-time traffic. To address the issue, we conduct a simulation in Riverbed Modeler 17.5 environment with a 128, 256, 512, and 1,024 Bytes of request to send (RTS) threshold variation value to overcome a collision caused by hidden nodes problem. The result shows that the 512 Bytes of RTS threshold value gives the best QoS output among them all.
The Influence of Blue Light in Maintaining Alertness in Tropical Country: A Preliminary Study
Authors: Rahma K T , Salma S A , Widyanti A , Suprijanto  
Published: January 2020

Abstract
Several studies have discussed the influence of blue light on cognitive activity. This study aims to determine the effectiveness of blue light in increasing alertness at night in tropical countries. Twelve healthy young males joined in this study. All participants were asked to do a monotonous activity that is reading activity. The experiment was a within-subject design with the independent variable is lighting condition (normal light and blue light) and duration of exposure (30 minutes and 60 minutes). Electroencephalography (EEG) signals were recorded continuously during the experiment. Alertness was measured based on theta, alpha, and beta activity. The result is the light condition not significantly affected the theta (F (1,11) = 0.608, ρ = 0.452), alpha (F (1,11) = 1.561, ρ = 0.237), and beta (F (1,11) = 0.608, ρ = 0.700) activity. This shows that blue light is not effective in increasing alertness at night in the tropical country both in short and long duration of exposure.
Identify the Relevant Pages of Book to be Indexed Using Naive Bayes Classification Method
Authors: Christina S , Ronaldo D 
Published: January 2020

AbstractThe back-of-book index is a component that is often found in non-fiction books. The back-of-book index contains important terms and page numbers where the terms appear in the book, it is useful for helping readers find certain term directly, without having to search on every page. Usually, the back-of-book index is compiled by the author or a professional indexer, although currently there are several automatic indexing applications available. To determine a term on a page worth to be indexed requires knowledge and expertise of the author whom better understand the book’s context. Hence, generating a good back-of-book index is a task that requires great effort, knowledge and cost. Therefore, the back-of-book index is very possible containing indexed terms that refer to irrelevant page numbers due to human error or the weakness of the indexing application. This study aims to identify the relevance of the pages to be indexed in the back-of-book index, using Naive Bayes Classification. The testing result shows that the approach with Naive Bayes Classification produces an average precision value of 74.02 percent and 100 percent for the recall value. The average precision value that more than 50 percent indicates that the naive bayes classification approach is capable to identify the relevant and irrelevant pages.
Lean Concept Development in Fast Food Industry Using Integration of Six Sigma and TRIZ Method
Authors: Indrawati S , ‘Azzam A , Adrianto E , Miranda S , Prabaswari A D 
Published: January 2020

Abstract
The service industry plays an important role to the development of Indonesian economy. Recently, the fast food industry has a good growth due to customers preferences. This significant contribution and industrial growth are not accompanied by the quality of industrial performance. This condition lead to a weak competitiveness, especially to face of the ASEAN Economic Community (AEC). The fast food industry needs to develop a specific strategy to improve the service system. This study uses a lean approach to improve the service system in a fast food restaurant. The method used is the integration between six sigma and TRIZ (Theory of Inventive Problem Solving) to get a creative problem-solving innovation in improving service industry performance. Based on the research conducted, it can be identified that the waste occurs in fast food industry is the service delay due to the process of giving flavor with a total time of 527 seconds. Improvement strategy to reduce the waste is to change the process of giving flavor (parameter changes) and implementation of 5S in the work area (enriched atmosphere). There is a time improvement of 90% by implementing the strategies that have been obtained.
Production Capacity Optimization with Rough Cut Capacity Planning (RCCP)
Authors: Sugarindra M , Nurdiansyah R 
Published: January 2020

Abstract
One of the factors supporting the company’s success in achieving its goals is the ability to meet demand and provide satisfaction to customers. A musical instrument industry makes products with a make to order system, so that it requires the accuracy and smoothness of the production process to meet the demand in accordance with the specified time. Based on data on average total daily production of Spray and Sanding Balikan Factory 2, it known that there is still often an imbalance between the actual productions of the planned production at regular work time. This study aims to analyse and evaluate the capacity of production resources and facilities. The Rough Cut Capacity Planning (RCPP) method is a method that can show a comparison between the actual capacity available and the capacity needed. Based on the research results, workload rearrangement must be carried out to distribute labor and increase work hours 90 minutes and 120 minutes so that demand can be fulfilled.
Escalation proposal of supply chain management performance of oil and gas upstream industry in PT. XYZ by using SCOR model approach
Authors: Immawan T , Nugraha I 
Published: January 2020

Abstract
Oil and gas industry in Indonesia is one of the industries with the largest contribution for country’s foreign exchange. As recorded in 2014, 12% of country’s budget is from oil and gas industry and able to provide a significant increase in national economic growth. But in the other hand, supply chain performance in this industry shows inconsistencies in each year, especially in PT. XYZ. As one of the largest oil and gas companies in East Kalimantan, Indonesia. As the result, company’s targets are missed oftentimes and have not been able to achieve competitive advantage. Therefore, the purpose of this study is to propose performance improvements in the supply chain of PT. XYZ. This study uses the model of Supply Chain Operations Reference (SCOR) 11.0 which focuses on the attributes of reliability, Analytical Hierarchy Process (AHP), and fishbone in collecting and processing research data. The result shows that the supply chain performance of PT. XYZ. which focused on the reliability attribute is categorized as good, starting from 2012 to 2017. There is 1 indicator that need to be improved and get further control, that is the indicator of percentage of supplier meeting environmental metrics/criteria and fill rate. One means to overcome the problem is by using big data analysis approach, because the approach can analyze big number of data in the Company, whether it’s structured, semi-structured, or unstructured.
The important level of washing machine quality dimensions in 4.0 industrial era based on the perception of a laundry business: A preliminary investigation
Authors: Rakhmawati T , Sumaedi S , Astrini N J , Bakti I G M Y , Yarmen M , Damayanti S 
Published: January 2020

Abstract
The development of technology has created various type of innovative washing machine on the market. Numerous options influenced consumers’ quality expectations. Consumers’ expects more from the ever-growing number of washing machines. This research aims to identify washing machines’ quality dimensions in 4.0 industrial era and their level of importance based on the perception of a laundry business. This study used one subject, a medium-sized drop-off laundry business “X” in Bogor, Indonesia. The identification of indicators and quality dimensions was done through ad scouring process, discussion with the research team, and interviews with Laundry X. The importance level of washing machine quality dimensions was assessed using the Kano model. The results show that washing machines in the 4.0 industrial era have several superiorities in terms of customization, easiness, smartness, safety, performance, aesthetics, durability, information and service support, and environmental orientation and energy efficiency. For Laundry X, easiness, safety, performance, durability, and information & service support are the most important dimensions.
Integration of pyrolysis – tar decomposition over porous low grade iron ore
Authors: Wicakso D R , Nurandini D , Mirwan A , Putra M D 
Published: January 2020

Abstract
The objective of this research was to investigate the effect of low grade iron ore as catalyst on pyrolysis process of using palm empty fruit bunch. The process was conducted in fixed bed reactor at 450-600 °C. During experiment, the biomass placed within the first stack underwent pyrolysis process was pyrolyzed to produce char, tar and gases. Tar vapor and gases passed through the catalyst bed located within the second stack to conduct catalytic reaction. Furthermore, the vapor left the reactor and entered the cooling system. The catalyst after experiment was weighed to calculate total carbon deposited into catalyst pores. The results showed that the presence of low grade iron ore catalyst increased the gas yield with the yield reduction of liquid fraction. The gas yield was also increased with increasing temperature.
Rheological and kinetic studies of low density polyetyhlene (LDPE) – chitosan biocomposite film
Authors: Kusumastuti Y , Timotius D , Putri N R E , Syabani M W , Rochmadi  
Published: January 2020

Abstract
The amount of plastic waste has always increased over the years and caused many problems in the environment because of its poor degradation rate characteristics. Recently, the interest in biodegradable polymer to substitute these synthetic plastic materials has been increased. Biocomposite materials have better biodegradability rate and can be utilized for several applications, such as packaging, agriculture, biomedical and healthcare. Chitosan as natural polymer that has good biodegradability can be combined with low density polyethylene (LDPE) to improve its mechanical properties. The LDPE-chitosan biocomposites were made by mixing chitosan and LDPE with maleic anhydride as compatibilizer and perbutyl Z as an initiator. In this study, the decomposition kinetic and thermal behavior of low density polyethylene (LDPE)-chitosan biocomposites were investigated by thermogravimetric analysis (TGA). The residual weight of biocomposites after decomposition process was analyzed. The samples were heated in the range of temperature from 25 °C to 500 °C and at different heating rates of 5, 10, 15, 20 °C/min, respectively. The result shows that activation energy decreased along with the increasing of chitosan concentration. This result indicates that the LDPE-chitosan biocomposite is a promising candidate for substitution of synthetic plastic.
Analysis of E-Service Quality Influence Through E-Satisfaction on Online Purchasing Decisions (Consumer Survey of PT. X)
Authors: Sutrisno W , Setyawan A D 
Published: January 2020

Abstract
This study aims to determine the effect of E-Service Quality through E-Satisfaction on online purchasing decisions at PT X. Data collection using a questionnaire with a Likert scale. This research uses Partial Least Square as an analysis tool. The results showed that the E-Service Quality variable influenced the E-Satisfaction variable by 37.9%, and influenced the online purchasing decision variable by 0.514. Means it can be concluded that the E-Service Quality variable has a positive and significant effect on online purchasing decisions through E-Satisfaction on PT. X