bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparation of Schedulling Methods: Campbell Dudek Smith, Palmer and Dannenbring to Minimize Makespan
Authors: Utami I D , Kuswandi I , Wibowo D E 
Published: July 2020

Abstract
Delays in completing one of production cycle will affect the entire flow of the next production process. DI is a manufacturing company that manufacture aircraft. In 2017 there was a delay in manufacturing processes of A380 aircraft wings, especially in machining parts, which resulted in delays shipping to assembly parts. This delays affected time delivery to customers. So that, scheduling plan was needed in this company. This paper proposes comparation of three scheduling methods, which are Campbell Dudek Smith, Palmer and Dannenbring with the aim of minimizing makespan. Result of this study describes that the best method for minimizing makespan is Campbell Dudek Smith method, with a scheduling sequence starting from job 13-6-5-3-10-4-9-1-7-8-18-11-14-19-17-2- 12-12-15-16, and the makespan value of 46.03 hours taken in constructing both.
Redefining Industry 4.0 and Its Enabling Technologies
Authors: Mubarok Khamdi 
Published: July 2020

Abstract
Industry 4.0 can be seen as the most buzzword that mentioned almost in every subject. Admitted as the new industrial revolution, research related to Industry 4.0 has gained excessive attention from academia, government, and industries. However, a formal academic definition of Industry 4.0 that reflected the current advancement could not be found. The technologies that driven this new revolution also bias. Furthermore, the subject area that greatly contributed to the vision of Industry 4.0 also unknown. This research investigated publications in diverse literature databases to find the answers of those gaps. Based on that, we proposed a comprehensive definition of Industry 4.0 and determined 12 enabling technologies that driven Industry 4.0. In addition, we found manufacturing and computer science as the most contributed research subject.
The Accuracy Measurement of Stock Price Numerical Prediction
Authors: Amar Samsul , Sudiarso Andi , Herliansyah Muhammad Kusumawan 
Published: July 2020

Abstract
Stock market prediction is both attracting and challenging. The successful of stock price prediction will give financial benefit, therefore, it has attracted many researchers and practitioners since long time ago. One of stock prediction performance measurement is the accuracy. There are many methods for measuring the accuracy, ranging from simple to sophisticated mathematical formulation. A method may be suitable for some type of data of condition to be forecasted while other methods may be suitable for other conditions. This article describes some of those methods. MAPE is the most popular accuracy measure for forecasting since it is intuitive, easy to be interpreted and can be applied to measure the forecasting accuracy for both individual item and across item groups. However, the MAPE has shortcomings. First, the value of MAPE will be undefined if one or more of the actual data are zero. Second, MAPE is very sensitive to outlier data. Third, equal errors above the actual value result in a greater percentage error than those below the actual value. Finally, using the MAPE for forecast methods comparison will lead to a systematically under-forecast result. Even with its shortcomings, MAPE is preferred for the forecasting accuracy method due to its applicability, interpretability and reliability. Thus, it is better to look for ways of correcting the drawbacks of MAPE rather than searching for alternative measures which are less desirable than MAPE. This paper proposes a modified MAPE using moving average of the actual data (MAPEMA) to reduce the drawbacks of MAPE. The result shows that the use of MAPEMA can reduce the problems of using MAPE.
Key Factors of Success Technology Transfer from Higher Education To Creative Industry in Bangkalan, Madura
Authors: Indriartiningtias Retno , Andi Rahadiyan W , Subagyo  , Hartono Budi 
Published: July 2020

Abstract
Technology is one of key factors in achieving competitive advantage of an organization, especially those in creative industries. Through effective technology transfer is it expected to be transferred technology really can be absorbed and used by the creative industries. There are several factors that influence the effectiveness of technology transfer, this research using four factors, there are: characteristics of transfer agent, characteristics of transfer recipient, form of technologies and Transfer Mechanism. Some models and framework can also be used to study the relationship of the key factors of success with the effectiveness of technology transfer. Based on a conceptual model, this research aims to identify the key success factors of the process of technology transfer from the Trunojoyo University to creative industries in Bangkalan Madura. This study uses a multivariate approach by using principal component analysis and linear regression. Based on data from the four creative industries in Bangkalan obtained mathematical models Y = 0.830 + 0.379 Form Technology + 0.450 Characteristics of Transfer Agent - 0.371 Characteristics of Transfer Recipient. The model has a R2 value of 0.299, which means those factors capable identifies the effectiveness of technology transfer by 29.9%, the rest is explained by other factors that have not been identified. From the model concluded that characteristics of transfer agent is the main factors of technology transfer.
Evaluation and Improvement of E-toll Card System at Suramadu Toll Gate
Authors: Hidayat Rachmad 
Published: July 2020

Abstract
The research was conducted to the manager or operator of toll road and e-toll users to find out what problems happened in transactions with e-toll cards. The purpose of the E-Toll Card is to simplify transactions and to unravel the traffic jam at the Suramadu toll gate. The methods used were the critical incident technique (CIT) and importance performance analysis (IPA). The research result in Suramadu toll road is 7 attributes that need to be improved. Evaluation and improvement of toll road usage system resulted that queue of vehicles at Suramadu toll gate was caused by the lack of socialization, lack of signs along Suramadu road access and lack of toll gate on Suramadu toll road. The toll road management is also required to provide a place for top up e-toll cards around Suramadu access. The toll road management also opens the e-toll card complaint system to the complaints of e-toll card users with the online system and also to reduce transaction errors on toll roads.
Development of an Automatic Anti Pitching System (APS) Autonomous Surface Vehicle (ASV) for Fish Mapping
Authors: Saputra Noverdo , Lukmana Muhammad Arifudin , Suranto Purwo Joko 
Published: July 2020

Abstract
The common problem occurs in fish mapping using autonomous surface vehicles (ASV) is pitching stability. Some researchers have indicated that problem affects the results of mapping. The target of this system is to design an Autonomous Pitching System (APS) for ASV using numerical simulation software. The simulation is done by implement APS into the system, producing an oscillatory motion from the ASV. For both dynamics of craft in short and long periods, APS with proportional controller (P), proportional-integral controller (PI), and proportional-integral-derivative controller (PID) are developed in order to minimize the oscillatory behaviour. It was found that for the short period dynamics, the APS with PI controller was the optimal controller, followed by the PID controller and then the P controller. For the long period dynamics, the APS with PID controller was optimal.
Ergo-physiological Work Station Reduces Cardiovascular Load and Visual Complaints of Carved Artists
Authors: Widana I.K , Sumetri Ni Wayan , Ketut Sutapa I 
Published: July 2020

Abstract
The problem felt by carving artists after doing full day activities is the increase in cardiovascular load and decreased ability to see objects. Physical signs that are felt by artists carving are increased heart rate and dizzy eyes or run away. One of the causes of an increase in cardiovascular load is a work station that is less ergonomic and a work environment that is not in accordance with the physiological needs of workers. Subjects carry out activities for 8 hours, starting at 8:00 a.m. up to 5:00 p.m., with a 1 hour break. Data is observed in conditions before and after the ergo-physiological rules are implemented. Measurements were made 4 times, namely at the initial and final conditions of the treatment without treatment and the initial and final conditions with treatment. Problem solving will be focused on the appropriate human aspect and utilization of technology, so that it will get the ECSHEP work process (effective, convenient, safe, healthy, efficient and productive) technical easy to work, economical, ergonomic, energy saving, environmentally friendly and in accordance with the trend of the era. The method of this research is experimental with the same subject design. Ten samples of responders who perform activities on conditions before and after treatment. Was examined data on environmental conditions were analyzed by the Mann-Whitney test. Data on cardiovascular load were tested with two pair sample t-tests, while visual data complaints were tested with Wilcoxon signed rank test at a significance level of 5%. The results showed that ergo-physiological implementation, in the form of giving work tables and chairs and improving environmental conditions can reduce cardiovascular load and improve the sharp vision of carved artists. The direct impact that can be felt by artisans is increased productivity and maintained product quality.
Study of thermal effectiveness in shell and helically coiled tube heat exchanger with addition nanoparticles
Authors: Sunu Putu Wijaya , Anakottapary D S , Susila I D M , Santosa I D M C , Indrayana I N E 
Published: July 2020

Abstract
Thermal effectiveness was performed as preliminary research in shell and coiled tube heat exchanger with addition of Al2O3 nanoparticles. In the present study, the effect of small concentration of Al2O3 nanoparticles analysis for steady state. Water is selected as the working fluid of cold fluid and refrigerant R-22 as hot fluid. The present work also includes the effect of nanoparticles on logarithmic temperature difference (LMTD), amount of heat absorbed by the water as a time series function. Based on the result, the effectiveness of water-Al2O3 nanoparticles as cold fluid shows good agreement on heat transfer parameter enhancement. The heat exchanger effectiveness increase until 2.2% compare to that of heat exchanger without Al2O3 nanoparticles. This phenomenon indicates an increases of heat transfer process inside heat exchanger. The application of water-Al2O3 nanoparticles on shell and coiled tube heat exchanger enhanced the convective heat transfer passively.
Evaluation of Air Side Characteristics Performance of Finned Tube Evaporator
Authors: Santosa I D M C , Waisnawa ING Suta , Sunu P W , Temaja IW 
Published: July 2020

Abstract
Improvement of Refrigeration system performance should be supported by increasing efficiency of its components. Mainly, two components must have excellent performance are condenser and evaporator. In this study examined a finned tube heat exchanger for evaporator application, furthermore research goal is aimed to enhance the evaporator designs in order to get higher efficiency and effectiveness of the heat exchanger. The effects of distance of fin, shape and size of the fin and combination of tube, will be investigated deeply and the heat transfer coefficient is going to examine using U-LMTD method based on some parameters of heat. This paper is still focus on design CFD model to comply the research purpose. The results were found that geometry design and meshing already compatible to get reasonable post processing results. Analysis of the air velocity vector in the heat exchanger showed good agreement toward references. Vortex and turbulence occurs in side are of the tubes and wake or stagnant flow seems in the behind tubes. The next examine is going to concern with model validation toward experimental results and investigated heat transfer coefficient in details.
Temperature Characteristics Investigation of Chilled Refrigerator with Humidifier
Authors: Santosa I Dewa M. C. , Waisnawa IGN Suta , Sunu PW , Sukadana IBP 
Published: July 2020

Abstract
Post-harvest cold chain of horticulture product in tropical country such as is very urgent to keep the product quality. In this country, the environment temperature and humidity are relatively high, so that the horticultural products are deterioration very fast. On the other hand, this condition can be used naturally for increase the room humidity. This study is aimed to investigate the medium temperature refrigerator performance when apply humidifier to keep the humidity of the system. This research was carried out by experimental investigation. The rig has been built with complete with measurement and instrumentation in order to get a precision control of temperature and humidity. The results show that the system reach good enough of COP which approximately 3.5. However the humidifier contributed a cooling load that can affect of 1 – 1.5 °C temperature increasing. Further studies will be examined optimisation humidifier system with low electricity consumption and eco operation condition with the best combination temperature and humidity to keep the products still has good quality under long time storage.
Optimization of Machining Parameters for Surface-roughness and Precision in EDM Using Response Surface Method
Authors: Yusron R M , Bisono R M 
Published: July 2020

Abstract
The quality of the components of the machining process is determined by the value of surface roughness and dimensional precision. This study uses the Central Composite Design experimental method on the Response Surface Method. To determine the variation of experiments, three factors and three levels were used, the specimens used were mild steel with a total of 20 experimental variations in the EDM (Electrical Discharge Machining) machining process. Then the surface roughness and dimensional precision are tested. Optimization is done by the method of non-linear programming, where the first response is surface roughness and the second response is the precision of the dimensions of the length of the machining process. The results of the analysis show that the strong current influences the surface roughness and dimensional precision. While on time and off time do not really affect the surface roughness or precision dimensions. Optimization with non-linear programming techniques produces a minimum surface roughness of 3.805880 (µm) and dimensional precision of the maximum machining time is 175.2290 (minutes) with a current adjustment of 3 (Amperes), on-time 100 (µs), and off-time 20 (µs).
Development of Learning Media Design Engineering Integrated with Machinery Element and Drawing Machine Based on Contextual Learning
Authors: Suwito Djoko , Budijono Agung Prijo , Yunus  , Kurniawan Wahyu Dwi , Soeryanto  
Published: July 2020

Abstract
Students understanding and skills in designing techniques lectures are not integrated with supporting subjects such as machine elements and machine drawing. This resulted in the majority of students difficulty in achieving learning goals. Referring to the development needs of the world of work, the design engineering course requires a package of learning tools that are integrated with the supporting subjects. Specific targets to be achieved in this research is to development of design engineering learning media with integrated engineering elements and machine drawing machine based on contextual learning. Learning device development method were adapted a 4D model, which includes definition, designation, development. Based on the results and discussion of research that has been done, the research team succeeded in developing learning tools in the form of teaching modules to support designing techniques lectures. Based on the results of validation by learning experts, engineering experts, and Indonesian grammar experts 3 expert validator showed that, the average score of validation included in good category (3.56). It can be said that the developed learning tools are worthy to use. Based on the results of limited trials, it can be said that learning is more effective with the indicator that the enthusiasm of students in participating in learning, student activities during learning categorized well shown by students actively involved in learning. Student learning outcomes have achieved mastery both individually and classically. In addition, students also showed positive responses to learning by expressing interest, excitement, and motivation to follow Designing course lectures using developed teaching modules and hoping the same pattern can be used for other appropriate courses.
Effect Variations And Types of Smaw Welding Electrodes on A36 Steel to Tensile Test
Authors: Rahangmetan Klemens Alrin , Wullur Christian Wely , Sariman Farid 
Published: July 2020

Abstract
Welding is the connection of the two metal materials into one, using a heat process without any pressure, defined as a metallurgical process. In the world of industry and metal welding which is used to construct construction is low carbon steel as the base material, and fracture is the nature of steel. This study aims to determine the effect of the type of electrode and current strength on the mechanical properties of welding results on ASTM A36 Steel. This research uses experimental research methods. In the welding process using ASTM A36 steel material on a specimen with a size of 100 mm x 25 mm x 8 mm in a flat / flat position (G1) using V. The type of electrode used is RB 2.6, RB 3.2, and LB 52 2.6 with variations in the flow of 70 A, 80 A and 90 A, which are then carried out by tensile test. The results of the research that have been done show that the value of tensile strength at the RB electrode 2.6 with a welding current of 70 A is 355.504 Mpa, 80 A is 439,795 and 90 A is 472,011 Mpa. For RB 3.2 electrodes with a welding current of 70 A of 263,955 Mpa, 80 A of 376,981 Mpa, and 90 A of 342,362 Mpa. At LB 52 2.6 electrodes with a welding current of 70 A at 478,974 MPa, 80 A at 484,172 Mpa, and 90 A at 485,152 Mpa. According to the data, it can be seen the results of welds using LB 52 2.6 electrodes at 90 A currents, with a tensile strength value of 485.152 MPa, a stretch value of 27.5%, and an elastic modulus value of 1764,190 N / mm2.
Magnetic Braking System Using Electromagnetic Force
Authors: Hairil Budiarto 
Published: July 2020

Abstract
A vehicle is a transportation that is widely used by humans as transportation for daily activities. Vehicles generally use mechanical brakes to do braking, these mechanical brakes have a system that requires friction forces to produce a slowdown in the vehicle. The frictional forces carried out will make erosion of the mechanical brake pads and the need to periodically replace the bearings. In this study discussed the design and manufacture of braking systems using electric brakes to support the performance of mechanical brakes. Electric brakes that have advantages in the media used compared to mechanical brakes, namely electric brakes do not require friction media to slow down, but electric brakes use four aluminum plates as magnetic force media, while coils or windings with the inner core will produce electromagnetic force as an actuator braking. The braking system that is carried out will maintain the speed according to the setpoint value of 5100 rpm. This electromagnetic braking results in a maximum braking of 500 rpm and takes between 9 and 15 seconds to reach the steady state position.
Hijaiyah Letters Sign Language Recognition for Deaf and Hearing Impaired Children Based on Principal Component Analysis Method
Authors: Achmad Fiqhi I , Diana R , Wita I 
Published: July 2020

Abstract
Knowing and learning hijaiyah letters is a very important basis in reading Qur’an from an early age. For some normal people knowing and learning hijaiyah letters is relatively easy but unlike the children who have special needs like deaf and hearing impaired children. They can only communicate using sign language both in the form of hand gesture, body gesture, and facial expression. From these problems, the author the author is motivated to make a system for implementing the hijaiyah letters cues for deaf and hearing impaired children using PCA (Principal Component Analysis) method which was installed on desktop computer.
The process of hand gesture recognition consists of several steps: camera initialization, preprocessing, feature extraction using PCA to find eigen value and eigen vector, and hand classification using euclidean distance. The output of hand gesture recognition is hijaiyah letters identification from alif to ya’ in the form of text and sounds.
Planning of Path Loss in Large Scale Signal Propagation Model at 5G Network by Using Linear Regression Methods
Authors: Ubaidillah A , Ulum M , Pramono S. 
Published: July 2020

Abstract
The generation of 4G network communication technology will gradually not be able to accommodate the community needs in the increasing data access speed. This research becomes very important to be one of many concepts in developing 5th network technology or 5G. Planning aims to observe the propagation model of 5G network signal to find the transmission path loss values using the mmWave signal propagation model, power link budget calculation, and analysis through linear regression. Based on the study results, the average path loss at 28 GHz and the line of sight and non-light of sight conditions for the Free-Space Reference Path Loss model are 97.7583 dB and 140.7436, while for the 73 GHz frequency each at 105.3378 and 131.6135 dB. Results of error standard deviation of linear regression models of the Reference Free-Space Path Loss at frequency 28 GHz conditions of line of sight and non-light of Sight 0.0636 and 0.7023 respectively, while the 73GHz frequency is 0.2855 and 0.5103, respectively.
Performance of 2.4 GHz Xbee for Digital Image Transmission with Yagi Antenna
Authors: Haryanto  , Rohman K , Rahmawati D , Anifah L 
Published: July 2020

Abstract
The use of xbee modules is generally used for sending sensor data. In wireless communication today not only sensor data is sent, but also images that have a higher level of complexity. This study is used to determine the performance of xbee based on the IEEE 802.15.4 protocol for sending image data. Yagi antennas are used to strengthen or support XBee performance when shipping. The stages of the simulation were carried out with the 2016 CST software. The VNA preameter test produced yagi antenna parameters with a working frequency of 2.4 Ghz return loss = -12.27 dB, VSWR = 1.545. The results of sending a vertical image resolution of 160 x 120 obtain an average delivery time of 4.05 seconds, a speed of 678.28 bytes / second and data loss of 29% with the furthest distance of 250 meters. The results of sending vertical images of resolution 320 x 240 obtained an average delivery time of 11.24 seconds, speed of 779.28 bytes / second and data loss of 20% with the furthest distance of 200 meters. The results of sending a horizontal image resolution of 160 x 120 obtain an average delivery time of 4.03 seconds, a speed of 727.15 bytes / second and data loss of 20% with the furthest distance of 450 meters. The result of sending a horizontal image resolution of 160 x 120 obtained an average sending time of 11.19 seconds, a speed of 735.52 bytes / second and data loss of 23.8% with the furthest distance of 400 meters.