bluuebunny/crossref_metadata_2025_split huggingface dataset:
Twin loop induction sensor for detection Partial discharge
Authors: Waldi Eka Putra , Lestari Asri Indah , Fernandez Rudy , Mulyadi Saifa , Darmawan  , Laksono Heru Dibyo , Andre H , Aulia  , Hazmi Ariadi , Murakami Yoshinobu , Hozumi Naohiro 
Published: May 2020

Abstract
Partial-discharge is a symptom of high voltage insulation aging, which is a small voltage pulse with high frequency and superposition with high voltage sources that have low frequencies. To find out the existence of this signal, it needs a reliable measurement technique to avoid misinterpretation. This paper presents a technique for measuring partial discharge with an induction method. The sensor used is circular twin loops. The first loop passes through a partial discharge signal, and the second induction receiver produces an induced voltage signal. Various sizes of loop diameters are designed with dimensions 3.2, 4.7, 8.9, and 11.4 cm to look for sensor sensitivity. The performance sensor is analyzed by reading the sensitivity test to the input given with 50-ohm oscilloscope impedance. From the measurement results, the higher the diameter of the sensor loop has good sensitivity.
Mobile Application Security Penetration Testing Based on OWASP
Authors: Alanda Aide , Satria Deni , Mooduto H.A , Kurniawan Bobby 
Published: May 2020

AbstractEvolution of smartphones and smart devices affected one of the most used operating systems on smartphones and smart device is Android. Android growth with fast and affected the growth of applications used by that operating system. That application developed by many developers and can be downloadable on the play store. besides the benefits and features that operating systems are given and support from the application can affect security to users. The purpose of this research is to know vulnerability and technics that used to find a vulnerability in Android operating systems and Android applications. In addition, to give recommendations and prevention from the vulnerability. Technics and methods that used based on research from the OWASP Foundation consisting of 10 main vulnerability in Android application that is improper platform usage, insecure data storage, insecure communication, insecure authentication, insufficient cryptography, insecure authorization, client code quality, code tampering, reverse engineering, and extraneous functionality. The results from testing of five applications downloaded from Play Store. 4 application have vulnerability based on OWASP Mobile Top Ten documentation. The OWASP documentation can give an illustration of the vulnerability that most found in Android applications from the market.
Tuning with Ziegler Nichols Method for Design PID Controller At Rotate Speed DC Motor
Authors: Allu Nicolaus , Toding Apriana 
Published: May 2020

Abstract
DC motor is a type of motor that is widely used in industry, electronics and supporting components for some electronic equipment or instrumentation. But now the PID controller is still widely used in various industrial sectors, this is due to its toughness to overcome various problems that exist in the industry. But there is one drawback that is the tuning method, the tuning process must be done by trial and error. More tuning procedures done manually by trial and error method that the result is not necessarily true. To overcome these problems required an alternative approach that can achieve a relatively better value and faster to perform the tuning process. In this case the alternative method used is tuning with Ziegler Nichols. Based on the simulation performed with the controlled torch, the value of the disturbance with the controller Kp = 3,6, Ki = 2,857 and Kd = 1,134 happened to the motor rotation at the lowest interference occurred at 1818 RPM while the highest rotation disturbance reached 2177 RPM from the nominal rotation speed of 2000 RPM for 80 seconds and suffered a friction coefficient of about 20 seconds.
Pricing and Contract Design for Software Products in the Presence of Requirements Change
Authors: Pambudi Pandu Dwi Luhur , Wu Cheng-Han , Mahendrawathi ER 
Published: May 2020

Abstract
The presence of software requirements change (RC) during project development is a critical challenge for the developer to offer software contract designs. Because under the presence of RC, the decisions toward the contract offer will impact to project’s price spent by the developer. Managers of software companies must decide what contract designs to offer to clients in the development of software. Abstracting from an example drawn from the software industry, we exhibit three designs of software contracts incorporating fixed price (FP) and time-and-materials (T&M) policies. Specifically, a software company offers a fixed-price and agree to RC with adjustment cost (SW contract), or initially provides a fixed price and then charges an additional fee based on the time-and-material in response to RC (MP contract). We examine the strategic choices of two contract designs in a two-stage game. We carry out a full analysis of distinct settings of monopoly model. We characterize the conditions under which the contracts can be the best decision for developers. As the result, we found that the MP contract performed better when accommodating the presence of RC instead of the SW contract.
The Performance between Two Long-span Roof Trusses of Cold Formed Steel with Back to Back Channel Section
Authors: Fitrah Ridho Aidil , Nofriyandi R 
Published: May 2020

AbstractCold formed steel (CFS) is mostly used for short span structures in Indonesia because its advantages in cost and time efficiency. However, there is still limited number of long-span construction using cold formed steel because its buckling issue. Throughout the time, there are many researches that revealed the buckling issues can be prevented; one of them is combining their section. Then, CFS structure should give full structural performance. This research aims to analyze the performance of long-span roof truss, 24 m, using CFS back to back channel section. Two types of roof trusses, model 1 and model 2, are compared to get better configuration for long-span roof truss. Analysis is conducted by 2D model and analytically calculated based on SNI 7971:2013. The results are the maximum axial tensile force and axial compressive force, and also deflection. They will be compared to CFS back to back channel section capacity. This analysis obtained the stress ratio and deflection of both configurations. Based on analysis results, CFS back to back channel section safely withstands resisting axial forces by giving compressive ratio number around 0,54-0,72. Then, model 2 has given better structural performance, stress ratio and deflection, than model 1.
The Effect of Aging Treatment on Mechanical Properties And Microstructures of Ti-12Cr In Ortodontic Applications
Authors: Anderson Sir , Annisa  , Affi Jon , Yetri Yuli , Gunawarman  
Published: May 2020

Abstract
Many adults experience tooth loss due to accidents and lack of care. This causes various problems, one of which is a problem in chewing food. One solution that can be used is the use of dental implants. Dental implants that are currently made of titanium Ti-6Al-4V at a very expensive price. One of the newest types of titanium alloy material that can be used with relatively cheap prices is Ti-12Cr. As a new material, the effect of heat treatment processes on mechanical properties has not been investigated in more detail. So that research is needed on the effect of heat treatment with the aging treatment process on the mechanical properties and microstructure of the Ti-12Cr material as a substitute for cheaper titanium implants. In this research, a solution treatment (ST) heat treatment was carried out at 885oC and an aging treatment (AT) at 540°C. Aging treatment is carried out with variations in holding time of 30 ks and 60 ks. Then the microstructure inspection and mechanical properties testing are carried out through hardness and tensile tests. With the aging treatment of the microstructure of the material, Ti-12Cr experienced grain refinement and the hardness obtained was higher than that of Ti-6Al-4V. The hardness values of Ti-12Cr ST, Ti-12Cr AT 30 ks, Ti-12Cr AT 60 ks and Ti-6Al-4V are 457 VHN, 605 VHN, 772 VHN, and 349 VHN. However, the tensile strength of Ti-12Cr is lower than the tensile strength value of Ti-6Al-4V.
Estimation of Shear Wave Velocity of Darul Imarah District, Aceh Besar, Indonesia by Using 1D HVSR Inversion
Authors: Yusran Y , Khalqillah Aulia , Muksin Umar , Syukri Muhammad , Rizal Syamsul , Ismail Nazli 
Published: May 2020

Abstract
A total of 19 locations of Horizontal to Vertical Spectral Ratio (HVSR) measurements was conducted in Darul Imarah District, Aceh Besar, Indonesia. The objective of the research is to investigate the shear wave velocity (V
s) structure. This survey is important to analyze a structural characteristic through a V
s, considering the measurement points intersect to Aceh Segment Fault. One of the methods to obtain Vs
is 1D HVSR inversion. In this paper, we analyzed only four of 19 measurement points of HVSR data to estimate Vs
, they are AB03, AB08, AB09 and AB19 points. The inversion results show that the four points have four layers with different Vs
. The average of Vs
30 of AB03, AB08, AB09 and AB19 were calculated, they are 150.90 m/s, 197.16 m/s, 150.45 m/s and 316.80 m/s, respectively. The AB09 has the lowest average of Vs
30 (highest amplification) than the other points and has soft soil composition. Furthermore, based on the average of Vs
30 and amplification, the subsurface of AB03, AB08 and AB19 may have combination soft soil and stiff soil in 30 m depth. The complete analysis of average of Vs
30 structure will be conducted at all sites including a 3D velocity structure will be derived from the interpolation of 1D velocity.
Study of Land Erosion and Bed Change Simulation of Danau Diatas and Danau Dibawah
Authors: Sadtim  , Dalrino  , Hartati  , Hanwar Suhendrik , Aguskamar  
Published: May 2020

Abstract
Numerical bed change study of Danau Diatas and Danau Dibawah was conducted. Hydrodynamic and sedimentation simulations are carried out using monthly discharge input limit conditions obtained from the calculation using the FJ Mock method. The RMA2 numerical model is used to obtain current patterns that are calibrated against the measurement results. Estimated land erosion is calculated using the USLE equation. Sediment discharge obtained from the USLE equation is used as an input of sediment sources to obtain sedimentation patterns using the SED2D module. The results of the modeling of the current pattern get the current velocity ranging from 0 - 0.05 m / s for Danau Diatas and between 0 - 0.04 m / s for Danau Dibawah. The bottom profile change due to the distribution of sedimentation was found to range between 0.12 ∼ 0.21 m in one year simulation with a radius of 0,53 and 1,72 km. This study is a preliminary study to get an idea of the potential for sedimentation. The validity of the results is recommended to use bathymetry measurements to see the bed changes that occur with the time of measurement. The initial description obtained has shown the need for efforts to regulate land use and commensurate with lakes in anticipation of silting of lake waters due to erosion.
Analysis of textile dye production scheduling using FCFS, CDS and Heuristic Pour methods
Authors: Hidayah N Y , Syafrizal M , Darmawan M 
Published: May 2020

Abstract
PT. X is a company engaged in the chemical industry that produces various types of textile dyes for several garment companies in Indonesia and abroad. The manufacture of various dye textiles has a different processing time because it is influenced by the quality and parameters of each product. The production scheduling system used by the company is First Come First Served (FCFS). Companies often experience delays in the timely delivery of orders due to the production scheduling system that is used by the company was not optimal. This research was conducted to schedule a sequence of textile dye processing in PT. X by using the FCFS, Campbell Dudek Smith (CDS) and Heuristic Pour to get shorter makespan and minimize delivery delays. The results of research at PT.X showed that the scheduling method which had the fastest makespan was the Heuristic Pour scheduling method with a total makespan of 562.4 hours (23 days) and could save time by 47.96 hours or 7.86% compared to the FCFS method.
Integration of conjoint analysis and QFD for new product development in manufacturing small and medium enterprises (case study: a food company)
Authors: Kosasih Wilson , Laricha Salomon Lithrone , Darius Halim Alfred 
Published: May 2020

Abstract
Basically, small and medium enterprises (SMEs) in Indonesia are weak in innovating product development in accordance with customer’s needs, making it difficult for SMEs to penetrate the market. This paper discusses the application of integration between Conjoint Analysis and QFD in the development of a new product from SME. The research was conducted at a medium-sized company, which produces a variety of “dimsum” frozen food products. Finally, the integration of the two provides a double benefit in the research and development stage of the manufacturing SME so that a new product that is developed can really be realized. The final design results obtained two new product segments according to its target market, namely for the economic and premium segments.
Safety stock analysis of ship fuel in shipping company (Case study: white oil ship PT. Pertamina (Persero))
Authors: Fatma Septiana Nuzul , Sukarno Iwan 
Published: May 2020

Abstract
Currently, fuel supply of PT. PERTAMINA (PERSERO) SHIPPING for each trip with a predictive safety stock to supply as much as 40% of the total fuel provided. The fuel that is stored for too long will also affect the sediment, thereby reducing the performance of the ship’s engine in the long run. Optimization was conducted by using the safety stock formula which influenced by the uncertainty of demand and the uncertainty lead time (sailing time) of the ship. Calculations are based on demand from three distance routes that have the highest frequency assignment. Calculations are performed by comparing the safety stock in the four conditions, namely: (a) the condition of safety stock with combination of three routes (heterogeneous); (b) the condition of the safety stock by successively using the distance 286 NM; (c) 320 NM; and (d) 536 NM. The results obtained by calculating safety stock with the heterogeneous condition was 81.44%; homogeneous conditions within the 286 NM; 320 NM; 536 NM were 15.2%; 7.3%; and 29.2% of the total fuel supplied. Thus, the safety stock application is done by plotting trend charts to get an increase of 0.056% for each NM.
Productivity Analysis Stevedore a Descriptive Analysis Method with Integration, Importance Performance Analysis, Quality Function Deployment (Case Study: PT. Port Indonesia III (Persero) Branch Gresik)
Authors: Widodo E , Suprayitno H , Suparno  , Umaiyah  
Published: May 2020

Abstract
Gresik port is a port with a very strategic location in the region Gresik industrial area, productivity can be achieved with the implementation of a better way of working, organized, effective, efficient, creating something better. the productivity of loading and unloading the target of service to satisfaction of stakeholders, how to determine the factors that influence and by improving the productivity of loading and unloading at the port of Gresik. With descriptive analysis method to know the level of EF: BT is still yet to be achieved was based stevedoring productivity director general of sea transportation standards already achieved. Methods importance performance analysis is used to determine the perception of the services to be improved the speed in the process of loading and unloading, the availability of facilities and port equipment, fleet readiness ocean going ship expeditions, circumstances and facilities yard, competency officers loading and unloading, the speed of completing complain, system lighting port. Methods of quality function deployment used to determine priority in handling an increase in productivity of loading and unloading at the Port General Gresik.
Optimizing production layout and capacity via FlexSim– A case study of Y factory
Authors: Chen Tai-Jung , Lee Yu-Ching , Chiang Chin-Hsin 
Published: May 2020

Abstract
Production capacity maximization and cycle time reduction are considered two of the most important issues for general factories. The paper applies Systematic Layout Planning (SLP), process balance, and system simulation to a small condense units manufacturer to enhance its production capacity and reduce cycle time. The developed solution shortens the total traveling distance by 81.25% and reduces the original travel time by 61.76%. In addition, we calculate the number of machines needed by process balancing and decrease the original cycle time by 64%. It is found that the proposed approach improved both cycle time and travel distance, and free up considerable capacity for manufacturing of other condensing units product types.
Economic Feasibility Study of Onshore Exploration Oil Field Development using Gross Split Contract
Authors: Ariyon Muhammad , Setiawan Aldo , Reza Refiandi 
Published: May 2020

Abstract
The condition of the oil and gas world economy is not good and the cost recovery is too large and the results obtained are not comparable to those obtained by the contractor. Thus, the change in the new contract system with the addition of split rules for contractors considers in managing the oil and gas fields. To restore the situation and restore the spirit of the contractor to continue investing in Indonesia, the Indonesian government provides contractors with incentives and other alternatives to change the existing PSC Contract with the Gross Split PSC based on the Minister of Energy and Mineral Resources Regulation No. 52 of 2017. Field X is one of the onshore Exploration fields in the South Sumatra Basin. The field is a commercial field that has potential oil reserves to be managed. To conduct field X development, it is necessary to conduct an economic study of field X development using a Gross Split contract to determine the feasibility level. Based on calculations using the Gross Split Contract field development X has a contractor NPV value of $ M 192, 63, Government NPV = 415, 235 and Contractor IRR = 41.04%, Government Take = 72.3% and Contractor Take = 27.7%. Based on this, the Government and Contractors will benefit from using the Gross Split PSC Contract because it is economical to develop.
Quality improvement on Common Rail Type-1 Product using Six Sigma Method and Data Mining on Forging Line in PT. ABC
Authors: Fitriana Rina , Saragih Johnson , Defina Fauziyah Salma 
Published: May 2020

Abstract
PT. ABC is a manufacturing company engaged in the automotive sector that produces components of cars and motorcycles. This study aims to improve quality by using the six sigma method with the DMAIC stage (Determine, Measure, Analyze, Improve and Control) and analyze it using data mining techniques. At the definition stage 7 defects were identified Critical To Quality namely pockmarked, burry, dent, rust, lapping, marking and NG marking. The measure DPMO value is 28, 810 and the sigma value is 3, 399. In the analysis phase using data mining with the classification method with the decision tree algorithm, the company’s decision in decision-making status of Type 1 Common Rail products agreed on the 10 most interesting parameters. Based on FMEA, it is known as the main cause of the Common Rail Type 1, which is the crust on the dies, marking the product that appears and the trajectory of the heating machine to the forging machine that is too far. The improve phase is using Lifetime Card Dies, the marking is concave inward, reducing the running distance of the heating-forging machine and Controling Check Sheet Product. The DPMO value obtained after improvement is equal to 24095 and the sigma level is 3.476.
Analysis of the impacts of Motor Vehicle Exhaust Emissions at Pancasila University on health in order to create A Green Campus
Authors: Sholihin M Y M , Prasetyani R , Mukti B C 
Published: May 2020

Abstract
The current carbon monoxide (CO) emissions are the main component of diseases, such as cough, dizziness, nausea, and shortness of breath for those who inhale them. Pancasila University is one of the colleges in the city of Jakarta that cares about the poor quality of air in the city of Jakarta; therefore, Pancasila University wants to apply the concept of green campus as a form of concern for the environment. This research was conducted at Pancasila University to discover the relationship between air quality in the campus, especially carbon monoxide (CO) substance, and its impact on the health of the university’s academic community members. The methods used in this study are simple linear regression, HIRARC, and hierarchy of control. The results of this study show a relationship between CO substance variables and complaints about diseases suffered by members of the university’s academic community due to the substance, with an R count value of 0.9519. There are substantial risks that the students can experience, including student activities that cause nausea and outdoor employee activities that cause dizziness and nausea. These big risks can be prevented by issuing a decision letter to reduce air pollution at Pancasila University.
Designing A Reading Chair using Kansei Engineering Approach
Authors: Rahayu Mira , Ardian Ekananda Hilman , Mufidah Ilma 
Published: May 2020

Abstract
Supporting facilities such as reading chair are often used as a scene to read books. However, the existing reading chair has not satisfied the user. This Research uses Kansei Engineering which purpose to design a reading chair that fulfil user needs. Kansei Engineering was chosen in this research because it can translate customer’s impression, feeling, and demands on existing products or concepts to design concrete solutions and parameters into product design. This research is done on students in the Bandung area who use reading chair. Using a questionnaire as a tool to collect data that distributed online with google form to 347 respondents. Questionnaire data was processed using KMO statistical test and Barlett test, so from 23 Kansei word that had been obtained there was a reduction to 15 Kansei word would be used into designing reading chair in this research. The results of this research states, the implementation of Kansei Engineering could be done in the design of reading chairs, and there are innovations to meet user needs such as, armrest, headrest and footrest. Also USB port, lights, and book storage area. All of that can be used by users.