bluuebunny/crossref_metadata_2025_split huggingface dataset:
The potential of problems on operational Go-Jek and Grab Bike
Authors: Purnawan P , Musliadi M 
Published: December 2019

Abstract
Go-Jek and Grab is one of transport mode that popular within society. They have the system that supports efficiency of their services. Although there are benefit for user and operator, but their operation is often creating problems to the users. In some cases, it is also creating problem in the environment. The purpose of research is to identify the potential of problems on operational Go-Jek and Grab Bike based on analysis operational performance and the operational system. This research was conducted based on qualitative analysis methods, the data was obtained using in deep interview to the drivers, potential problem on operational Go-Jek and Grab Bike was determined based on Logical Framework Analysis (LFA) method. The result shows that operational Go-Jek and Grab Bike has potential of problems in future on drivers, users, company, government and services.
Designing pressure build-up test on heavy oil well by alternating oil viscosity
Authors: Fathaddin M T , Oetomo R H K , Hisanah N 
Published: December 2019

Abstract
Pressure Build Up analyses on a heavy oil well would give an inconclusive result on pressure derivative curves. Some kind of thermal injection should be performed prior to implementing the operation of Pressure Build Up test, where the heat will lower the viscosity of the reservoir fluid. The study was aimed to design a proper well test for N-7 Well using a simulator. Since the Pressure Build Up test was intended to reach radial flow period within shut in time of 100 hours, the viscosity of fluid should be reduced to 24.8 cp or less. Sensitivity of several parameters namely viscosity, permeability, porosity, and shut-in time was conducted in designing Pressure Build Up test. This sensitivity would give various radius of investigation. Furthermore, the study was continued to correlate radius of investigation as a function of the parameters mentioned above.
Flexural strength of precast reinforced concrete beam extension
Authors: Sambowo K A , Prihantono P , Sumarsono R A , Kusumawardhana P , Widiasanti I 
Published: December 2019

Abstract
This paper presents the performance analysis of the precast reinforced concrete beam extension, in order to solve the problem of constructing a long and big concrete beam. This beam size problem is one of the challenging problem in terms of setting it in the construction site. We discuss the flexural strength analysis for a joint mechanism in the middle of the beam element in order to ease the installation. The aim of the experiment is to evaluate the flexural strength on the concrete beam. Testing is conducted based on the ASTM C 78 standard, which is the concrete flexural strength test with two exposures due to the existence of a support which exist at the 1/3 of the area (third point loading). In this research we conduct experiment on a total of three samples. The first sample is a full beam with the size of 3000 mm x 250 mm x 350 mm. The second one is the beam with the concrete hollow by the size of 1300 mm x 250 mm x 350 mm. The third one is a beam with the steel sheet extension by the size of 1400 mm x 250 mm x 350 mm. The test result of the three samples shows that the maximum load which can be supported by the full beam is higher compared to other samples. Moreover, the maximum flexural strength which can be supported by the beam with the concrete hollow tube is lower compared to the beam with a steel sheet extension. The fracture pattern behaviour of the middle extension of the concrete beams can be identified.
Production capacity and raw material storage capacity in agriculture-based industries
Authors: Mauluddin Y , Ikhwana A , Cahyadi U , Sudarwanto M 
Published: December 2019

Abstract
The purpose of this study is to find production capacity and storage capacity of raw material warehouses in agriculture-based industries. It is a concern; the supply of raw materials can only be done during the harvest period while production must continue throughout the year. This case occurs in the coffee processing industry, where the supply of raw materials for the harvest period is from April to August while production must be carried out every day throughout the year. To model, the problem is used by simulation using deterministic variables. Various capacity scenarios are tested to see system performance. The results that industries with raw materials from agriculture must prepare a very large raw material storage capacity.
Supply chain support factors for brown sugar business optimality using analytical hierarchy process
Authors: Ikhwana A , Mauluddin Y , Hayat E J , Taptajani D S , Suandi M I 
Published: December 2019

Abstract
The sustainability of business activity is determined by the existence of all elements involved in business activity. Alignment of each component included in business activities can be determined by identifying supporting factors based on movements in each business chain that occurs. This study aims to determine the supporting factors for the optimality of supply chain performance of brown sugar business activities using the supply chain management approach and supported by the analytical hierarchy process method in determining criteria that support brown sugar business activities. Based on the results of research on the supply chain of brown sugar business activities, to promote the sustainability and optimality of supply chain performance the brown sugar business on the elements involved in the brown sugar business consists of several factors including product quality, the cost of purchasing brown sugar raw materials, and accuracy and the suitability of the number of shipments that are in accordance with the request.
Product quality control based on lean manufacturing and root cause analysis methods
Authors: Sulistiyowati W , Adamy M R , Jakaria R B 
Published: December 2019

Abstract
Product quality is one of the most critical things in a product offered. Flat glass is one of the many products produced because of high consumer demand. This requires the company to run the production process well to create products that meet consumer expectations. The purpose of this study was to determine the type and amount of waste in the glass-making production process and analyze the root causes of the glass-making process. The method used in this study is a mixed method, namely quantitative and qualitative approaches, which are directly measured using the Lean Manufacture concept approach. Lean manufacturing is a production activity that focuses on reducing waste in all aspects of the company’s production activities. From the results of the study, it can be concluded that the cause of reject is influenced by two factors, namely humans and machines, human factors due to not running the standard operational procedure (SOP) properly, the factors of the machine due to not doing the appropriate machine settings at a particular station.
Causative factor identification of N212-400 product project delay at PT. Dirgantara Indonesia
Authors: Pujiariadi A S , Widiyanesti S 
Published: December 2019

Abstract
PT. Dirgantara Indonesia had a delay project for five aircrafts of n212-400 ordered by the Phillipines and Vietnam. This is a qualitative research using a case study approach in the identification of the causative factor of project delay, with the purpose of study using descriptive research and the process data validity and reliability using triangulation method. The data analysis in this research was the productivity of project, potential failure mode of the project using FMEA (Failure Mode and Effect Analysis) and fishbone diagram to determine the cause and effect of the project delay. The result of the productivity during N212-400 project was 40%, and in aerospace industry, this is below its average of 70% - 80%. Using fishbone and FMEA, the cause of delay and the potential failure of delay project N212-400 was identified and the main factor of project delay based on fishbone and FMEA was machine and material process. Both of the key factors had a high score of RPN (Risk Priority Number) at 810 and should be given priority for improvement.
Use of eggfruit on the making of toast bread
Authors: Sugiarti Y , Azizah D N , Rahayu D L 
Published: December 2019

Abstract
Eggfruit has high nutritional value and good function for health but their consumption still low and the fruit is unfamiliar for most of the Indonesian citizen. This study aims to determine the acceptance of panelists on the eggfruit toast bread produced. This experiment was used experimental method by using Block Randomized Design which was repeated two times with nine eggfruit substitution treatments, namely A = 0%, B = Puree 10%, C = Puree 20%, D = Puree 30%, E = Puree 40%, F = Flour 5%, G = Flour 10%, H = Flour 15%, dan I = Flour 20%. Tests conducted include physical analysis that is color and texture; chemical analysis that is water content, total ash content, protein content, fat content, fiber content, salt content, carotene content, and vitamin C content; and organoleptic tests by hedonic methods on overall appearance, crust color, crumb color, uniformity of pores, tenderness, weakness, flavor, and taste. The results showed that panelists acceptance of eggfruit toast bread produced has the criteria of dislike-like for overall appearance, crust color, crumb color, uniformity of pores, tenderness, weakness, and flavor, while for taste is ordinary-like.
Implementation copula to multivariate control chart
Authors: Lestari T E , Nisa S K , Citra F , Asri G B 
Published: December 2019

Abstract
Multivariate Control Chart is an effective tool in Statistical Process Control to identify either an out-of-control process or in-control process. Hotelling T2 control chart is a quite popular and widely used technique in this field. However, its performance is deteriorated when the underlying distribution of the quality characteristics is not following the multivariate normal distribution. Multivariate control chart usually recommends a procedure in the phase-in Hotelling T2 control chart although there is difficulty in interpreting the signals from multivariate control charts more work is needed on data reduction methods and graphics techniques. Basically, the multivariate control chart refers to the theory of prediction interval. Therefore, it’s called predictive multivariate control charts. The purpose of this research is to construct what so-called predictive multivariate control chart both classical in this part in the phase-in Hotelling T2 and Copula-based ones. We argue that appropriate joint distribution function may be well estimated by employing Copula. A numerical analysis is carried out to illustrate that an Application Copula-based Multivariate control chart outperforms than bivariate control chart and others.
Optimal distribution route to minimize transportation costs in soft drink industry
Authors: Sembiring A C , Sanjaya A , Willyanto W 
Published: December 2019

Abstract
Minimum mileage and maximization of utilities will help the product distribution process to be optimal. Soft drink companies in the city of Medan have problems in distributing products to consumers who are not on time. This is related to the lack of regulation of product distribution channels by the company. Therefore this research was conducted to optimize product distribution routes in order to minimize distribution costs. With the Traveling Salesman Problem (TSP) method, it will combine several closest distribution routes and improve the route sequence. Then the development of sub-routes that are formed from the travel time and utility of transportation equipment used. Formation of sub-routes is still done manually while increasing the order of sub-routes is done by using the Software Quant System (QS) version 3.0. and produce minimum mileage on each sub-route. In planning product distribution, 6 proposed sub-routes are formed in one week and are served by 1 transportation car with a capacity of 220 crates. The proposed sub-route is 171 km shorter than the available sub-routes, thus shortening the travel time of 302 minutes to transport the product.
Employability skills: Industry perspective and achievement of student of employability skills
Authors: Hendrawan R F , Daryanto D 
Published: December 2019

Abstract
The purpose of this study was to explore the importance of graduate work skills through an industry perspective. The method used uses a survey of 23 industries in various fields in Jakarta. The instruments used in this study were adapted from the SCANS model and integrated the Indonesian National Qualifications Framework (KKNI). The survey results show that the industry’s perspective on employability skills based on the IQF contains managerial abilities and attitudes. Another finding has found that the achievement of students’ employability skills obtained an average score of 83.1 with a very high category, with details of managerial abilities getting a score of 83.4 and an attitude score of 82.8. Thus the industry perspective on the need for employability can be fulfilled through the achievement of student employability skills.
Forecast gas well production performance with well test analysis for oil and gas industry
Authors: Samsol S , Rahmawan S , Ridaliani O , Gunawan R K 
Published: December 2019

Abstract
Well, test pressure and deliverability analysis are carried out to determine permeability (k), skin formation damage factor, initial pressure (Pi), (ΔP skin), investigation radius (ri), the boundary of the reservoir. The results of this work are used to calculate the initial gas reserves by wells and predict production capacity in the wells studied (AOFP). Furthermore, an optimal production plan will be produced to produce the most economical value. The result of this work is the initial pressure value (Pi) which is equal to 862 psi. The skin values of the pressure derivative and Horner Plot methods are -0.214 and -0.232 respectively, the permeability value is 148 and 135 mD, the value of the investigation radius is 2110 ft. The resulting AOFP is 8214 Mscf/D. The calculation of the initial gas reserves by well uses the volumetric method which is equal to 458 MMscf. These results carried out forecasting production performance aims to determine the most optimal production planning. This production plan, the scenario plan are the 1st scenario with a gas rate of 2 MMscf and 2nd scenario uses a compression 50 psi with a gas injection rate of 1 MMScf. Furthermore, the best scenario of this research is the maximum production by using 50 psi injection rate of 1 MMScf.
Implications on the total business approach to the press red brick supply chain
Authors: Taptajani D S , Ikhwana A , Chandrahadinata D , Hakim B L 
Published: December 2019

Abstract
Many strategies can be done by the company when it has an impact/implication, including the main actors in the red brick supply chain network press consisting of five business actors namely suppliers, manufacturers, distributors, retailers, and consumers. Continuous performance measurement is the key to all types of business success, so the purpose of this paper is to review the impact of the entire supply chain on the total effort undertaken, where performance measurement systems in the context of supply chains generate potential avenues for future research especially for new business people to be able to see what things need to be considered when starting a red brick press business. The author has found and classified the supply chain performance measurement system as one method of approach and systematic decision-making techniques. This study reveals that the SCOR Model approach as an indicator of red brick supply chain performance measurement and Analyst Hierarchy Process (AHP) as a decision-making tool can make a real indicator in the implementation of the current red brick business along with the impact on the market so that it is expected to get a solution to declare the effect of the red brick supply chain.
Analysis the influence of heterogeneity reservoir on RM field
Authors: Husla R , Prakoso S , Fathaddin M T 
Published: December 2019

Abstract
RM field is one of the fields located in Java Island. RM Field has great potential to be developed, In RM field water injection has been done to increase the value of oil production. The purpose of this paper are to find out the effect of heterogeneity on the RM field with dykstra parson and mobility ratio methods. The layers will be analyzed in the RM field were layers 22, 23 and 24. The results of the analysis for the Vdp value at layer 22 is 0.828, the Vdp value at layer 23 is 0.814, and the Vdp value in layer 24 is 0.812. In addition, a mobility ratio analysis was carried out using rock type 1 on the RM field and the M value on rock type 1 was 0.3429. The conclusion is with the dykstra parson analysis, it can be seen that RM field reservoirs tend to be heterogeneous, this is seen from the Vdp value which approaches the number 1, which is equal to 0.812 to 0.828, and with a value of M <1 which means it can produce high sweeping efficiency and produce good oil recovery.
Thermal characteristics of the X geothermal resources, and a recommendation on utilization possibility
Authors: Pudyastuti K , Harmen H , Djumantara M , Fadhlurrahman S 
Published: December 2019

Abstract
Like in petroleum, geothermal has a high cost and risk in exploration, development including drilling and utilization. This needs a clear definition and understanding of the nature and characteristic of the system in question, so the increasing of investment cost and risk could be mitigated. Un-like in the petroleum industry, reservoir engineering and geoscience are intricately intertwined in geothermal. Considering this issue, in this study the author has integrated the results of reservoir engineering analysis with geoscience concept, to determine the up-flow zone, is a zone with high thermal potential and high permeability, so it can develop as geothermal field. It was conducted at a geothermal prospect in Indonesia located at the average altitudes of about 1000 meter above sea level (m.a.s.l), where 26 wells have been drilled. The research focus in characterising of the system, using wellbore temperatures and pressures measured. This will conclude the reservoir temperature and pressure as well as enthalpy, and up-flow zone by deploying several methods and approach: namely Horner temperature, BPD curve and Pivot concept, and thermal conductivity or heat transfer concept which applied in geoscience. The research includes a literature review on heat energy conversion to electricity based on reservoir temperature and or enthalpy approach, which is used to recommend the conversion system that can extract the heat efficiently. In addition, the question on location of the up-flow zone has been answered by this study, i.e. in the southern part of the field.
Strategic partnership design in the development of a domestic waste-to-renewable energy industry
Authors: Solihat A , Permana I , Setiawan R , Nugraha S , Hamdani N A 
Published: December 2019

Abstract
Based on Government Regulation No 79 of 2014 about National Energy Policy that the Indonesian government is committed to developing a renewable energy mix of 23% in 2025 however its utilization in 2019 is only 3%, these condition encourage the efforts of the Garut government to commit to developing renewable energy by utilizing domestic waste into electricity. To implement, the government of Garut is supported by private industries from South Korea and Japan. The purpose of this study is to design a partnership strategy so this project can give benefit for both parties by mapping the role of each stakeholder and analysing the impact of this project on the surrounding community. The survey was conducted by collecting secondary data from Department of Environment, Hygiene and Landscaping and Central Bureau of Statistics of Garut and conducting interviews with related parties. The results of the study indicate that the limitations of technology by government can be transfer by the involvement of the private sector from South Korean and Japanese investors as operation management. A model of partnership strategy can help to realize the project that can increase the use of renewable energy in Indonesia.
School management on the basis of character building in teaching learning process
Authors: Marini A , Maksum A , Edwita E , Satibi O , Kaban S 
Published: December 2019

Abstract
This study aims at presenting school management model based on character building in teaching learning process. This survey research was conducted for 450 students at elementary schools in Jakarta in Indonesia. Structural Equation Modeling (SEM) was used in analyzing data. Study result found that model hypothesized was a good fit for the data. Other findings confirmed that teaching learning process preparation, teaching learning process, and teaching learning process closing are positively correlated with character building in teaching learning process. The three dimensions consisting of praying, connecting teaching material with good attitude development, and inspecting the student uniform neatness have positive correlation with preparation of teaching learning process. Teaching learning process can be predicted by teaching cooperation in teamwork, encouraging student to ask questions, and paying attention to student attitude. The three dimensions determining closing of teaching learning process are praying, greeting, and reflecting by integrating with character values. It can be concluded that the model of school management focusing on character building in teaching learning process proposed can be used by elementary schools in Jakarta to improve student character building.
Predictive value of entrance test with the academic achievement of medical students
Authors: Ningrum R K , Ekayani N W D 
Published: December 2019

Abstract
A medical student must pass rigorous entrance tests including academic test, academic potential test, health test, and interview test. The test is expected to have predictive value for the academic achievement of students reflected in block test. This study aims to predict the entrance test with academic achievement. This study correlates academic test and academic potential test with block tests in the first semester for student academic year 2018 (n = 106 students). Spearman correlation was conducted to determine the correlation between academic test and academic potential test with block test students in semester 1. There were negative correlations of academic test with block test (-0.254, p<0.05) and positive correlations of academic potential test with block test (0.457, p<0.01) in the first semester. This study shows that the students who have high academic test has lower block test and students who have high academic potential test have a higher block test. The academic potential test can predict the academic achievement of medical students.
Implementation of content business process reengineering framework in an information system
Authors: Dwanoko Y S , Agustina R 
Published: December 2019

Abstract
The Accounting Information System in the Drinking Water User Association (HIPPAM) is a system that manages the financial flow of an organization. In general, this information system manages customer data, water usage transactions, reports needed on web-based systems. This system has been running for 3 years. The purpose of this research is to produce the requirements for accounting information system software needed. This study uses the Reengineering Software Framework method, namely Business process Reengineering (BPR) which focuses on the reengineering framework of accounting information systems. The results of this study in addition to implementing the framework, also produce standard document content produced at each stage in the BPR. The implications of this study are expected to be used as a reference for future similar studies.