bluuebunny/crossref_metadata_2025 huggingface dataset:
Supply Chain Framework at the Rubber Company with a Profit Sharing approach in ensuring Material Availability
Authors: Sembiring Meilita Tryana , Budiman Irwan , Sembiring Anita Christine , Indra Evta , Sitanggang Delima , Wahyuni Dini , Nasution Harmein , Chen Andree
Published: July 2019

This research was conducted in rubber factory in Indonesia. Today, businesses need a more efficient supply chain that is able to resolve complex challenges in the present. This research is aimed at increasing the company’s competitive advantage by designing supply chain framework with profit sharing system to ensure material availability. This research is conducted by using data reduction method in determining quantitative data for input Stream Value Mapping and Supply Chain Management. Determination of rubber material purchase price is done by using the average trend of rubber price so that the purchase of rubber material is done flat. In order to create trusts in the supply chain, profit-sharing systems are used so that suppliers will supply the right, consistent quantity, quality, and timing of delivery. The results obtained supply chain frameworks are better able to ensure process efficiency and material availability. If applied, this framework will save up to 29.17% processing time.
The concept of supply chain management performance measurement with the supply chain operation reference model (Journal review)
Authors: Putri Y D , Huda L N , Sinulingga S
Published: July 2019

In the era of globalization requires companies to start revolutionizing supply chain performance measurement system for their businesses. Supply chain management is one of the important issues that are a concern for companies that want to continue to increase consumer satisfaction, increase payment utility, and save expenses. For this reason, a supply chain performance measurement system is needed. The purpose of this paper is to build a supply chain performance measurement framework using the supply chain operation reference (SCOR) model as a tool for supply chain performance measurement. One of the causes of various failure of improvement programs in the supply chain is the inability to obtain an overview of the current condition of the company, including its cultural aspects. The use of the SCOR model in building the concept of supply chain performance measurement makes companies able to evaluate supply chain performance holistically in monitoring and knowing where an organization is relative to competitors. This paper focuses on the application of the SCOR model for supply chain performance measurement in manufacturing companies. Some tools are described in this paper as a proposal to build a performance measurement framework in optimizing value in the supply chain.
Risk assessment of supply chain of hybrid corn
Authors: Amrina Elita , Wardah Yulia Ainil
Published: July 2019

The supply chain network of hybrid corn collaborating with more than a thousand farmers and retailers are facing many risks. This paper identifies and investigates the risks of supply chain using House of Risk method. It begins with development of the activity mapping of supply chain actors of hybrid corn. Then, the possible risks in the supply chain of hybrid corn are identified from related studies and validated by industry and academic experts. Finally, the risk analysis is conducted to determine the severity and occurrence of the risks. Based on the results, identified a total of 38 risk events and 36 risk agents in the supply chain of hybrid corn. In addition, a total of 22 risk agents according to the value of Aggregate Risk Potential are selected and prioritized. The results indicate the changes in weather as the most risks agent occurred in the supply chain of hybrid corn. This study hoped can aid the supply chain actors of hybrid corn to prioritize the proactive actions as well as to reduce the aggregate impacts of risks occurred.
Facility Layout Design Through Integration of Lean Manufacturing Method and CORELAP Algorithm in Concrete Factory
Authors: Tarigan U , Cahyo F D , Tarigan U P P , Ginting E
Published: July 2019

The company observed was a company engaged in the manufacture of concrete by producing various types of products used for building construction. At the beginning of the establishment, the factory only produced ready-made concrete. Around 2009 the company began producing concrete poles so that the casting station was in a vacuum and backtracking of material flow occurred and transportation waste occurred. The problem that occurs is the long distance in the batching department with the casting station and creates the presence of backtracking. In addition, there are non-value added activities that occur in the waiting process (delay) and the distance of the material that moves away in the production process. Based on these problems required layout design, then a combined approach for lean manufacturing to reduce activities that do not add value and help with layout improvements using the CORELAP algorithm. The method used to solve this problem is to integrate lean manufacturing methods and CORELAP algorithms. This study aims to obtain the layout design of concrete plant facilities through simplification of the production process to increase the company’s production capacity. Obtained process cycle efficiency improvements on the results of the lean manufacturing method approach and increased production capacity per day.
Literature review of integration and opportunity research
Authors: Pujangkoro Sugiharto , Sinulingga Sukaria , Nasution Harmein , Napitupulu Humala
Published: July 2019

This paper is a literature study to determine the limitations of various integration study that have been carried out by previous researchers. In previous studies, various definitions of integration were found, each researcher defined integration with each version. Based on the limitations found in various previous studies, it can be seen that various integration studies can be carried out in the future to complement previous studies.
5S Implementation in Welding Workshop – a Lean Tool in Waste Minimization
Authors: Rizkya I , Syahputri K , Sari R M , Siregar I
Published: July 2019

This paper describes the application of 5S method in welding workshop and to highlight the significant contribution of 5S implementation to organizational progress both in terms of quality, productivity, work safety, and worker moral values. 5S is a work culture includes Seiri, Seiton, Seiso, Seiketsu, and Shitsuke. 5S is used to improve the quality of employees in handling their work activities. Welding workshop at small and medium scale (UKM) usually has a limited work area. Storage of irregular and unclear equipment and materials relates to increase search activity The search activity allows for delay. The key to successful implementation of 5S is the organizational commitment and worker discipline in handling the 5S. The application of 5S in welding workshop requires a storage device in the form of a rack equipment by naming information or information items saved in it. With the implementation of 5s and the procurement of storage rack able to minimize the search activity of 18.75% and the use of space 11.20%.
Evaluating Working Time and Work Capacity of Aircraft Cabin Line Maintenance Services
Authors: Pujangkoro Sugiharto , Wahyuni Dini , Panama Jeffrey
Published: July 2019

Along with the development of modernization and technology, high mobility has been transformed into the basic needs of each individual. To achieve high mobility, various kinds of transportation are highly needed, ranging from land, sea to air transportation. Aircraft as one of the main transportation, requires high maintenance costs to anticipate and minimize the risk of air accidents. Generally, aircraft maintenance can be divided into line maintenance that handles light (minor) maintenance and base maintenance that consist of heavy maintenance. One of the focuses on line maintenance beside of navigation and communication systems is Cabin maintenance. Cabin Maintenance Services usually perform the transit check, 24 hours check, daily check, weekly check, up to A Check. One of the focus of cabin maintenance is cabin standard check. Cabin standard check that consist of several checks from passanger aircraft entrance door, service door, cockpit interior, galley, lavatory, pessanger seats is currently allocated 150 minutes. However, it was found that with an allocation of 150 minutes by 1 man power, it was not possible to complete the cabin standard check for A330 series aircraft. Therefore, measurements of standard times andrestandardization for several types of aircraft is needed. Data collection is done by using a stopwatch time study to get the actual cycle time, then interview with mechanics on duty to get things that require an allowance, and consider the capacity of man hours and man powers available in the Maintenance Control Center (MCC). After measurement and recalculation, it was proposed to add another man power to the A330 series and proposed cabin standard check processing time for B737 series aircraft by 130 minutes, CRJ1000 by 95 minutes, and B777 and A330 using 2 manpowers each of 220 and 160 minutes to finish the Cabin Standard Check during cabin maintenance in various series of aircraft.
Analysis of the Effect of Supply Chain on Small and Medium Enterprises Performance in Medan (Case study on Leather Shoes SMEs)
Authors: Kodrat Kimberly Febrina , Sinulingga Sukaria , Napitupulu Humala , Hadiguna Rika Ampuh
Published: July 2019

Supply chain is important in business activities including for small and medium enterprises. The importance of all parties ranging from suppliers, manufacturers, distributors, retailers, and customers working together in the process of product creation to the distribution of products to end consumers produces the appearance of the concept of supply chain management. This study aims to analyze how the effect of supply chain management on enterprise performance. The supply chain management approach is carried out with four independent variables namely sharing information, trust, long-term relationship, and cooperation. This study aims to analyze the effect of supply chain management on corporate performance. The sampling method uses a random sampling method with a total sample of 75 people consisting of small and medium-sized leather shoes in Medan. The research method uses survey and data processing method using multiple linear regression SPSS program. The results of the research show that information sharing, trust, long term relationship, and cooperation variables have a positive and significant effect on the performance of supply chain management in thecompany.
Human error analysis on production process of door products with SHERPA and HEART method
Authors: Sembiring Nurhayati , Tambunan Mangara M , Febriani Miska
Published: July 2019

Company engaged in manufacturing that produces door leaf. This company is a factory whose work is done semi-automatic that man has a role in sustainability of production process. A problem in the production process of the door where there is a defect which is the main cause factor is human (human error). This problem can be solved by performing human error analysis with SHERPA and HEART methods. Systematic Human Error Reduction and Prediction Approach (SHERPA) analyzed occurrence of human error by using a hierarchical task input basic level while Human Error Assessment and Reduction Technique (HEART) part the calculation reliability is defined as how much operator made a mistake in the task that should be done. From the research found the results obtained SHERPA methods work items that have a critical level that is 2.2 (too long), 8.2 ( too long), and 11.2 (the flat part of the door yet). Based on the research with HEART method obtained the total value of HEP is 0.4986 where the value is influenced by EPCs factor. Based on the data obtained then possible troubleshooting for item 2.2, 8.2, and 11.2 issues is by improving operator skill.
Determination of Musculoskeletal Disorders (MSDs) complaints level with Nordic Body Map (NBM)
Authors: Sofyan DK , Amir
Published: July 2019

UD. Ikhsan which is located in Bungkah, is one of producer of bordir Aceh souvenirs with product result that is bag and wallet with various sizes. During this process the production of souvenir Aceh is done by using sewing machine which is operated manually. Generally use a new type of sewing machine and a rather large size with the help of engine dynamo to facilitate them in sewing and accelerate the completion of stitches. In general, tailors who work with static movements for an excessive period of time in their work activities will be at risk for injuries such as muscle disorders or Musculoskeletal Disorders (MSDs) associated with ergonomic problems. This study will discuss the level of complaints of Musculoskeletal Disorders (MSDs) with Nordic Body Map (NBM), where the method used is NBM questionnaire, with characteristics data of 15 workers from factors related to MSDs complaints on tailors. The results showed that body parts subjected to subjective complaints of Musculoseletal Disorders (MSDs) were 93% waist, 87% ass, 87% lower neck, 80% left shoulder, 80% back, and 80% wrist.
Human resource scorecard based human resource (HR) assessment system design
Authors: Ismail  , Nasution H , Sembiring M T
Published: July 2019

The performance appraisal system in the HR section of PT XYZ is still conventional based on attendance discipline indicators, timeliness of completion of tasks, the accuracy of the outcome of task completion, team work and initiative. The existing performance appraisal system has not been able to accommodate these HR capabilities. This study aims to design an HR performance assessment system with Human Resource Scorecard approach. The method used with Human Resource Scorecard approach is formulated based on vision, mission, corporate culture, business actors and business paradigm into 4 perspectives of Human Resource Scorecard namely financial, customer, internal business process and learning and growth. The performance criteria of lagging indicator and leading indicators are analyzed based on DOCS (Degree of Compliance to Standard). The results of the design are 11 HR strategy, 34 Key Performance Indicator (KPI), which consists of 14 lagging indicators and 20 leading indicator. The leading performance indicator measurement is 71% greater than the lagging indicator of 70.3%. The results of priority analysis of short-term human resource performance improvement with Analytical Hierarchy Process (AHP) approach result 4 proposals of lag indicator main priority and 1 main priority suggestion of lead indicator.
Relationship Discipline and Supervision with Implementation of Occupational Safety and Health (OSH) Employees at PT XYZ Medan
Authors: Hariyadi Vendra Taufik , Silaban Gerry , Hidayati Juliza
Published: July 2019

Unsafe enterprise conditions can lead to Work Accident t (CAC) and Work Disease (PAK) due to factors of employee, environmental and company behavior. Employee injury data at PT XYZ Medan which occurred in 2015 as many as 23 cases increased to 25 cases in 2016. Type of accidents experienced most traffic and pinched the machine or hit a sharp object. The purpose of this research is to know the correlation of discipline and supervision factor with the implementation of K3 employee at PT XYZ Medan. This research uses survey method with explanatory research approach. The population in the employee’s study tends to be more at risk of KAK and PAK as much as 507 people and the sample size is 84 people. Data collection through questionnaires. Method of data analysis with univariate and bivariate using statistical test of multiple logistic regression at 5% significance level. The results showed that the probability value (p-value) of discipline variable 0,000 is smaller than the significance value (α) 0.05. The probability value (p-value) of the control variable is 0.000 smaller than the significance value (α) 0.05.Conclusion of research result that there is correlation of discipline and supervision with implementation of OSH employee at PT XYZ Medan. It is recommended that company leaders improve employee discipline by applying effective reprimand sanctions and increasing stricter supervision.
Physical ergonomics analysis of the effect of smoking on sport performance
Authors: Tetelepta Yosua Wilgert , Muslim Erlinda , Moch Boy Nurtjahyo
Published: July 2019

These day lifestyle become personal identity that many have to choose. Sporty lifestyle that is a positive lifestyle with the purpose of maintaining our health condition with smoking which is a lifestyle that gives adverse effect to the human body due to bad subtances in it. Thus, the researchers looked at the adverse effect of smoking and sport in the form of V02 Max points which is the maximum lung capacity that is affected by the frequency factor of sport exercises, the number of cigarettes per day with smoking duration. The study was conducted using Beep Test method to obtain V02 Max points which will be compared and analyzed to see the influence of both lifestyle directly. The respondents were 18-25 years old man with normal Body Mass Index (BMI). Of the 48 datas that are already divided 50:50 for smokers and non-smokers. The result showed that sport exercise frequency and number of cigarettes per day had significant effect on V02 Max points either independently or combined but for sport exercise frequency and duration of smoking only independently had a significat relationship. Sport exercise frequency has a positive effect to V02 Max Points while smoking has a negative effect for V02 Max points. So Smoking has a negative effect on respiration even though we have been exercising regularly.
Hazard identification, risk assessment and risk control in a woodworking company
Authors: Arimbi Hanny Banowati , Puspasari Maya Arlini , Syaifullah Danu Hadi
Published: July 2019

An industrial activity is never separated from potential hazards and risks that can lead to workplace accidents. A small accident could bring a major impact on a company. Woodworking industry is the type of industry with the highest accident rate in manufacturing sector. This research is focused on a company which take roles in selling furniture and building components made of high quality wood. In its practical history, the company has never conducted risk assessment within the company, which makes the company is probably at high risk and can be easily exposed to various potential hazards. Risk assessment is a necessary step to create a safe working environment for the company and for the people involved in it. By conducting risk assessment, the workplace accidents which possibly occur within the company can be reduced or even eliminated. This research is conducted by identifying hazards as the initial stage. And then risk analysis is performed using risk matrix to determine risk ranking of the identified hazards and risks. Once the risk ranking of each risk is determined, the risk is prioritized based on its urgency to be managed. According to risk ranking, production machines are mainly the source of risk within the company with the highest severity rate. In order to mitigate the risk, Job Safety Analysis for company’s production machines is organized so it can provide the most relevant output in the end. This research conduces recommendations for the company to reduce the potential hazards which possibly arise within the company.
Improving the physical work environment by looking at the effect of work environment factor on SME
Authors: Panjaitan Nismah , Ginting Rosnani , Wahyuni Dini
Published: July 2019

Each company wants the operator able to work optimally, so that the operator’s productivity is expected to increase. Each operator has different productivity at work. Operators who have high productivity in work generate little idle time. One method that can be used to measure how productive someone is at work is the method of work sampling. The method of work sampling is a measurement procedure performed at randomly certain time which is developed based on probability law where the observations are made using randomly taken samples. Using this method, when the operator does the job and when idle can be observed and measured. The performance of work operator I and operator II was 92.77% and 95.18%. While the idle value of operator I and operator II amounted to 7.23% and 4.82%. The data of work operator accuracy I is 92.7 ± 6.1% and idle accuracy data is 7.3 ± 6.1%. The work operator’s accuracy data is 95.1 ± 4.9% and the idle accuracy data is 4.9 ± 4.9%.
Clasification of ergonomics levels for research
Authors: Panjaitan Nismah , Ali Amir Yazid Bin
Published: July 2019

Ergonomics is useful to create a conducive system among people, work facilities, and work environment, so that the task demands are not underloaded or overload. Task demands far greater than the human ability or capacity can cause the impact of overstress, accidents, fatigue, injury, illness, pain and others. Ergonomics studies and intervention can create the system which can be classified into three types, namely macro ergonomics, mesoergonomics and micro ergonomics. This paper will distinguish boundaries among the three types as there are no definite boundaries. The method of study is by focusing on a pre-existing concept in the literature review. The purpose to understand and to classify according to specific variables. A table was constructed to differentiate them. Macro ergonomics was found to be more to broad such as production system as a work organization. Micro ergonomics approach is aimed at a specific process. Mesoergonomics is in-between and encompasses relationships between individuals and organizations and sociotechnical systems.
IMPACT AND WATER FLOW STUDIES OF COMPONENTS FORMULATION FOR MIXING PROCESS CONTAIN OF POLIPROPHYLENE AND HOT MIX ASPHALT PENETRATION 60/70.
Authors: Hamsi Ir. Alfian
Published: July 2019

The thermoplastic Poliprophylene (PP) powder were mixed with Hotmix Asphalt 60/70 system to produce feedstock for sample of Asphalt pavement by using mixer and mold flow adviser simulation. The combination of 6%,7% poliprophylene and hotmix asphalt penetration 60/70 were choosen with various formulation adopted to attain optimum feedstock properties. Two different kinds of components system are poliprophylene with composition 6%,7% and hotmix asphalt penetration were deeply in investigated. It is found that the water flow of pure asphalt is 0,91 MPa, combination asphalt and poliprophylene 6% is 1,09 MPa, Asphalt and prophylene 7% is 1,33 MPa. The absorbtion of water for poliprophylene 6% and 7% is higher than pure asphalt, but the impact of asphalt combined with poliprophylene higher than the impact of pure asphalt. The results of simulation of mold flow advisor, water flow is faster 13,57 second than manual method 22,55 second.
WITNESS simulation of preventive and corrective maintenance for Surface Mounted Technology (SMT) line
Authors: Tan S. M. , Hwang J. Q. , Ab-Samat H.
Published: July 2019

This paper shows the application of Discrete Event Simulation to study the effect of proposed maintenance strategies to the availability. The simulation study was conducted on a Surface Mount Technology (SMT) line. The model is built in the Discrete Event Simulation software WITNESS 14 to imitate this selected case study line to test out two proposed maintenance strategies. The first proposed strategy consists of Corrective Maintenance (CM) task only whereas the second proposed strategy is the introduction of Preventive Maintenance (PM) to the line. The effect of the two cases to the availability of each machine and system availability were verified with the simulation model to determine the most optimal solution. Although the simulation testing did not show improvement in availability for all station after the introduction of PM, the increment in system availability indicate that PM is the most optimal maintenance strategy for the SMT line.
Efficiency analysis of electric energy use in palm oil processing (case study Bandar Pulau)
Authors: Warman E , Iqbal MN , Fahmi F
Published: July 2019

One way to determine the energy processing planning policy for energy optimization is achieved by energy analysis. In this study, the analysis was done by the calculated energy value used in each stage in a system as a whole to get a picture of how much the energy usage. This study contains the description of the extent to which the use of electrical energy to run the production process in the palm oil mill with a capacity of 45 tons by calculating the consumption of electrical energy in each station. The result of this research showed that the total electricity usage for production process at palm oil mill with the capacity of 45 Ton is 502,4 kW, with an efficiency level of electrical energy usage in production process equal to 73,05%.
Overall Equipment Effectiveness Analyse for Performance of CNC Milling Machine Operation
Authors: Hernadewita  , Hermiyetti  , Hendra  , Syukriah  , Br. Surbakti R. Astari , Marizka Dewi Auditiya
Published: July 2019

Overall equipment efficiency (OEE) is a large part of the maintenance system used by Japanese companies; Total Productive Maintenance (TPM). The value of OEE is affected by the often problematic production activities in machinery/production equipment such as damage to machine components resulting in reduced production, lowering engine production speed, preparation length and adjustment time, resulting in defective products and operating machines but not producing products. This paper will focus on the overall equipment efficiency of CNC Milling machine. The indicators of data parameter are used planned downtime, ideal cycle times, real-time cycles and daily operator reports (daily schedule controls) and direct data retrieval in the field. Where OEE calculation depends on availability, performance of efficiency, and rate of quality. The result has shown that the value of availability is 87%, performance of efficiency is 93% and OEE is 74%.
Remaining life assessment 150/20 kV trafo with isolation degradation method
Authors: Warman E , Rahmat M , Fahmi F
Published: July 2019

The life of a transformator (trafo) is determined by some of the conditions experienced by the trafo when the trafo is loaded. One of the conditions that provide high effect the life of the trafo is the amount of working temperature on the trafo. The high low-temperature trafo at load time is determined by the amount of load generated, the ability of the trafo to release the heat generated and the circumstances surrounding the trafo. In this research, the determination of trafo life by using isolation degradation method by measuring the temperature of top - oil, hot - spot temperature, and the amount of load generated by the trafo. The study was conducted by taking a case study of 150KV / 20KV trafo on Titi Kuning Substation. From the results of research on the trafo type, trafostar obtained the rest of the life of the trafo 2 in the Main Station Titi Kuning can survive for 11 years. With a load factor of 0.72 pu, a total hot-spot temperature of 169.20C, and an environmental temperature of 260C.
Quality Control with Six Sigma DMAIC and Grey Failure Mode Effect Anaysis (FMEA) : A Review
Authors: Ishak Aulia , Siregar Khawarita , Asfriyati  , Naibaho Hansen
Published: July 2019

Currently, manufacturing industry competes in improving the quality of products produced, High demand leads to competition in similar manufacturing industries. Therefore, it becomes a challenge for companies to reduce product abnormality. Six sigma is a very early and potential ideology in this field. In production sector accross the world, six sigma is well known and its asset is being taken for improving capacity and character achievement and also to make the course sturdy to quality alteration. The effectiveness of Six Sigma is well supported by anecdotal evidence. However, academic research on Six Sigma is still in its early stage. The review of Six Sigma and Grey FMEA case studies that is achieved in modest scale corporation, service company and product construction is showed in this paper.
Effect of injection moulding parameters in reducing the shrinkage of polypropylene product using Taguchi analysis
Authors: Hyie Koay Mei , Budin S , Wahab M A A A
Published: July 2019

Nowadays, manufacturing industry is growing rapidly in any country over the world. Plastic industry is the one of the manufacturing industry that has high demand among consumers. Polypropylene is popular due to its characteristics such as recycle, low cost, chemical resistance, excellent impact strength, food grade availability and so on. The plastic product is normally produced by using an injection molding machine. The quality of the product depends on the injection molding parameters during the processing. Thus, the optimization of the injection molding parameters on processing polypropylene by using design of experiment is the main objective of the study. The best value of injection molding parameters such as melting temperature, injection pressure, injection speed, cooling time, holding time and holding pressure have been obtained and optimized using Taguchi method. From the results obtained, the most significant injection molding parameter on the shrinkage of polypropylene is holding time. The result has been supported by analysis of variance (ANOVA). The optimization of injection molding parameters contributes to the plastic processing such as increasing productivity as well as maintaining the dimension and quality performance of the product.
Analysis of Sludge Separator Using Failure Mode Effect Analysis (FMEA) and Reliability Block Diagram (RBD)
Authors: Sabri M , Ramadhan Bayu , Satya Luthfi Ari , Isranuri Ikhwansyah , Sabri Faris A M
Published: July 2019

The process of palm oil purification trough Sludge separator serves to separate sludge and palm oil. This is an important process at the palm oil mill. The purpose of this research was to identify failure probabilities and reliability of sludge separator using failure mode and effect analysis (FMEA), and reliability block diagram (RBD). It was found that the sludge separator suffered severe damage and also frequent failure, the reliability before maintenance improvement is 17% and after applied some maintenance procedure correction achieved reliability 84.48%.
Employee Performance Appraisal Analysis with Analytic Network Process (ANP) and Rating Scale Method in Baitul Mall Lhokseumawe
Authors: Anwar
Published: July 2019

Performance appraisal is an important aspect of effective human resource management. Performance appraisal can help the company to know the working conditions of employees. The purpose of this study is to know how to get the criterion weight with Analytic Network Process (ANP) method and result of employee performance appraisal in Baitul Mal Lhokseumawe, as well as to know the criteria needed in employee performance appraisal that can be taken into consideration to make performance improvement in the future. And to get the result of employee performance appraisal with Rating Scale method. The result obtained is the weight of each criterion is technical skill (0,2375), work relationship (0,1612), soft skills (0,1554). Result of performance appraisal that is fifteen employees get scale C is performance according to standard counted eleven people with the value of employee 1(2,7480), employee 2 (2,6238), employee 3 (2,7702), employee 4 (2,7245), employee 5 (2,7702), employee 6 (2,7702), employee 7 (2,7702), employee 8 (2,7702), employee 9 (2,6249), employee 10 (2,7245), employee 12 (2,6481), while four other employees get value with scale D that is low performance with the value of employee 11 (2,5223), employee 13 (2,5114), employee 14 (2,5907) and employee 15 (2,5621).
Kano Questionnaire for the assessment of product attributes of alternative power plants in Kuala sub-district.
Authors: Ginting Rosnani , Hidayati Juliza , Zulfin Muhammad
Published: July 2019

Facing the challenge of increasing energy reserve, it is necessary to use other energy sources to replace the use of oil and fossil energy, which are clean, environmentally friendly and sustainable as long as the environmental condition of the geology and hydrology were maintained. Geographical, geological and natural conditions of Langkat regency have an enormous potential to be used as new energy sources, such as the sunlight, wind gusts, and river flow. This resources can be utilized as an electrical energy. This study is to propose an alternative energy-based on the power generation product. A questionnaire as a survey tool was used using Kano model to gain the information of customer need. As a result, according to the Kano analysis shows that the price attribute of the generator was in the attractive category. Meanwhile, the durability and ease of operation were included in the one dimensional, and aesthetic was the indifferent category.
Study on Energy Productivity Ratio (EPR) on Pre-Factory Design of Glucose Syrup at Riau Indonesia
Authors: Haryanto B , Harahap H , Tambun R , Hasibuan R , Suherman P , Kelvin  , Haryanto D , Wijaya J
Published: July 2019

The aim of this investigation is to determine the performance of productivity and feasibility of the operation of glucose syrup plant based on Energy Productivity Ratio (EPR). EPR is expressed as the ratio of output to input energy and by-product. Glucose syrup plant is to process dregs of sago to become glucose product. The procedure starts from collecting data needed as input energy such as: dregs of sago prices, energy demand and the depreciation of the factory. The output energy and its by-product comprise the whole production process such as: glucose syrup price and the remaining product calcium chloride. Calculation the equal energy of glucose syrup is to analyze the value of Energy Productivity Ratio (R) based on processing capacity per year, the value of EPR was 2,19 and 4,47 (EPR > 1), which indicated that the processing dregs of sago to glucose syrup is reasonable to be operated based on the energy productivity.
Portfolio Effect on End User Spare parts based on Demand Patterns
Authors: Hendra  , Napitupulu Humala L , Nasution Harmien , Hidayati Juliza
Published: July 2019

This paper use 1577 items of end-user spare parts data from two authorized service-center for a global brand motor cycle product that become the main means of public transportation in Indonesia to study the Portfolio Effect on end-user spare parts based on their demand patterns categorized as smooth, erratic, intermittent and lumpy. It found that items in the lumpy category got larger benefits from Portfolio Effect compared to other categories, with an average of 25.13% and standard deviation 9.70%. Despite their high fluctuations, they have relatively low demand (ρ) and Magnitude (M) coefficients so they can have more benefit from consolidation with relatively low risk.
Factors Affecting Indonesia Student Choosing University and Industrial Engineering Study Program
Authors: Hermawan Melina , Suryadi Arif
Published: July 2019

This research conducted to find factors affecting Indonesia student in choosing University and study program in Industrial Engineering a case study in a University, Bandung, Indonesia. Questionnaires were developed using 7 Likert’s scale with 58 factors considered and distributed to first-year students in a university. Factor analysis and Reliability analysis were used to test the validity and reliability of the questionnaires. Multiple Regression Analysis used to find which factors have significant influences. The result showed that the model has R2 of 75,3% with eight factors considered as significant factors.
Redesign of User Interface Zakat Mobile Smartphone Application with User Experience Approach
Authors: Shabrina G , Lestari L A , Iqbal B M , Syaifullah D H
Published: July 2019

Indonesia is a majority Muslim country with a percentage 87.1% of the population. Islam teaches its people to carry out activities that aim to share with the needy; Zakat, Infaq and also Shadaqoh (ZIS). However, zakat collection in 2015 is only 1.3% of it’s potential. Today, the marketing channels of ZIS products is starting to use the internet as the process of digitalizing zakat for communication channel and service channel to achieve efficiency. The most widely used device for internet browsing is smartphone devices. Growth of smartphone users in Indonesia occur along with the increase of mobile application users. Digitalization of zakat provides wider access to donors, fraud avoidance, reduced operational costs and better consolidation of national zakat reports. One of the effort is developing zakat mobile smartphone application which currently still encounters some problems in the development process. This study aims to re-design the User Interface of zakat mobile smartphone applications with the user experience approach for zakat mobile application in order to obtained the best recommended combination of user experience elements that aims to improve user experience of the application. The methods used are performance metrics, Single Ease Question (SEQ) questionnaires, System Usability Scale (SUS) questionnaires, Questionnaire for User Interface Satisfaction (QUIS) questionnaires, and Retrospective Think Aloud (RTA). Based on the results of this research, zakat mobile smartphone applications have low usability rating so there is a need to do re-design by using the TRIZ method. The result of this study is a prototype that meets the perceptions.
Design and Development of Stirring Tool Pin Profile for Reconfigured Milling Machine to Perform Friction Stir Welding Process
Authors: Budin S , Maideen N C , Sahudin S
Published: July 2019

Three customized stirring tool pin profiles have been designed which are (1) straight cylinder, (2) triangle shape, and (3) tapered shape to be used by reconfigured milling machine (Cheng Yin – CY-GH 260) to perform friction stir welding process. Shoulder geometry is constant for all tools (20 mm having 8 deg concave and length of the pin from shoulder is 2.7 mm). Then, all the tools were fabricated and tested by joining two similar plates of Al 6061 and Al 7075. The tools are made of H13 steel (chromium-molybdenum). Welding parameter used are 1270 RPM for rotating speed and 218 mm/min for welding speed. The samples produced were evaluated based on physical appearance of weldment, tensile strength value, surface roughness value, and physical tool wear. From the result, all the designed and fabricated tool pin profiles were able to perform FSW successfully using reconfigured milling machine. Tapered tool produced the highest tensile strength with 134.95 MPa. However, straight cylinder tool produced smoothest surface roughness with 1.850 μm which provide better surface finish. Weldability of Al 6061 is better compared to Al 7075.
Contact Phenomena in Micromachining: Modelling and Simulation
Authors: Siregar Ikhsan , Saedon J.B. , Adenan Mohd Shahriman , Nor Norhafiez Mohd , Pazai N.M.Izzat M.
Published: July 2019

The chip development process is an active procedure that is frequently nonlinear. A chip resolve not arrangement once the cutting penetration is a smaller amount than the smallest chip width available. This research shows a series of simulation results that work with finite element methods in a sophisticated radius conclusion on micromachining. A prototypical is industrialised by considering a method, this method is arbitrary Lagrangian - Eulerian (ALE). Popular this study analyzed and simulated chip development, chip progress and the mechanism of material distortion that occurs throughout micromachining AISI D2.
Design, Develop and Simulate Microdrilling Cutting Tool
Authors: Siregar Ikhsan , Saedon J.B. , Adenan Mohd Shahriman , Azmi Muhammad Firdaus Mohammed , Harun Anis Fatihah Binti
Published: July 2019

Microdrilling has an important role in the world of modern industry, especially in terms of miniaturizing existing products or components. Through this research explain the design, development of design and simulate microdrilling cutting tools. By using four geometries that are different from the previous model of micro drilling tools, a development, modeling and simulation were carried out and analyzed using Finite Element Analysis (FEA) using ABAQUS Software. Titanium alloys (Ti6Al4V) and tungsten carbide (WC) materials were chosen as one of the materials for the workpiece and cutting tools respectively. Microdrilling device is a constant variable, as for the amount of flutes and point angles is an independent variable. Cutting force, cutting temperature and Von Voltage misses from the micro model are analyzed from the simulation results based on these independent variables. After observing it turns out that fewer flutes will cause a high value to cut the temperature, cut the strength and also Von Mises.
Confusion around e-ID Card Service, Public Obligation versus Public Service
Authors: Kania I , Alamanda D T , Anggadwita G , Permatasari A , Hasyim S B
Published: July 2019

The issues of public services are complained by most people, one of them is the population problem. E-ID card as the identity of the population is the biggest public complaint reported to the State institution in charge of overseeing public services. Unavailability of the blanks, the uncertainty of the information and the non-proactive nature in providing services are the most common issues in the public complaints box for e-ID cards. This study aims to find out public opinion concerning e-ID card recording service. The method used by the researchers is descriptive survey in which the data were collected through observation, interview and questionnaire distribution. The sample in this study 578 respondents. Simple linear regression is used as a tool to measure the level of public satisfaction based on the services provided to them when signing up for e-ID cards. The result shows work culture influence the service quality by 0,35. The benefits of this research could have an impact on the policy of Garut regency government, especially in assessing the government performance in e-ID card recording service comprehensively.
Information Retrieval Optimization Based on Tree of Social Network
Authors: Nasution M K M
Published: July 2019

Information source such as the Web is a representation of social activities. Social activities create social structures that can be explored through social network concepts. Social networks not only show the structure of a social community, but prove the existence of its members and community. In that context, within the source of information, evidence of a community can be accessed through a collection of documents whose existence continues to increase, whereby the measurements can be performed using recall and precision. However, the recall and the precision as part of the measurement of information retrieval also requires technology to retrieve the related documents, an information retrieval based on network concepts. To solve it is proposed the concept of a collection of stars from trees and the degree of social actors in social networks, and produced a formula about the measurement of recall and precision with better results.
Effects of brand, tariff, network on customer preference in telecommunication.
Authors: Nasution H , Ginting L , Hidayati J
Published: July 2019

There are many service providers that offer telecommunication services. To win the competition, service providers must know their customer. Customer chose service provider’ products based on their preference. In this paper, discussed about effects of brand, tariff, and network to consumer while choose telecommunication service provider. This research was conducted by survey in Medan City by using sample 331 of prepaid customer. The paper show network is the highest corelation score. Network and brand have significant relation to customer preferences. To gain market share, service provider must maintain their network.
The experimental and simulation study of an earth-air heat exchanger in Medan city
Authors: Manik T U H S G , Sitorus T B , Panjaitan M L , Saragih Y O
Published: July 2019

The earth-air heat exchanger (EAHE) is an air-conditioning device utilizing a heat exchange between the air in the room and the soil. This paper purpose to determine the EAHE performance with experimentally and simulation. The simulation used are transient CFD, turbulent and 3-dimensional. The ambient air was distributed to the pipes with the different velocity of 2 m/s and 3 m/s. It was found that the earth-air heating exchanger effectiveness at air velocity 2 m/s for testing was 0.84 while for theoretical of 0.97. The coefficient of performance (COP) of EAHE increase from 1.341 to 1.761 when the increasing air velocity from 2 m/s to 3 m/s. The COP value also increases from 1.473 to 2.278 at the increasing of air velocity from 2 m/s to 3 m/s. The average of the COP value of the simulation result of the incoming air velocity was 1.99422 for velocity 3 m/s and 1.41426 for the velocity 2 m/s. For the average effectiveness of the simulation result obtained 1.00074 for the velocity of 3 m/s and 0.86100 for velocity 2 m/s.
The Model of Adsorption Isotherm on Reduction of Peroxide Number in CPO (Crude Palm Oil) Using Rubber Fruit Shell (Hevea brasiliensis) as Biosorbent
Authors: Pandia S , Nurfadilla S , Indirawati S M , Simarmata V , Vanessa
Published: July 2019

The object of this resesarch was to determine the model of adsorption isotherm on reduction of peroxide number in CPO (Crude Palm Oil) using rubber fruit shell (Hevea brasiliensis) as biosorbent. The pretreatment of activation (carbonating and chemically) was started by washing and drying the rubber fruit shell under the sun. The adsorption process was done by using biosorbent with the highest iodine sorbent dosage and contact time. The highest iodine number was 913.680 mg/g and was obtained at 1:5 biosorbent to KOH 6 N solution ratio. The best reduction of peroxide number was 83.86% at 0.5% biosorbent dose and 40 min of contact time. The model of adsorption isotherm on reduction of peroxide number was realized with dosis of biosorbent 1%, 1.5% and 2% at time of equilibrium 30 min. The model used was Freundlich and Langmuir isotherm. The result was the constant of Langmuir parameter was maximum adsorption capacity (qm) = 0.0009 and adsorption constant (kl) = -130.488. On the other side, the constant parameter of Freundlich was adsorption constant (n) = -0.579 and capacity of adsorption (kf) = 1.169 x 10−6.
Design of Integrated Waste Management Model of Medan City With Dynamic System Approach
Authors: Kinantan Bag , Matondang A Rahim , Hidayati Juliza
Published: July 2019

Garbage problems occur due to the imbalance between waste production in the community and the government’s ability to manage the waste. The old patern of collect–transport–dispose will give more burden to the system because of the increasing needs of infrastructures. This study aims to develop the integrated waste management model of Medan City with dynamic system approach. To be able to apply the new waste management model, the active roles of community are needed; therefore, it is necessary to know how far the perception and participation of community in the waste management nowadays. Based on the Law No. 18 of 2008 that the waste management starts from the source level (community) that is by reducing, reusing and recycling. The result of the study showed that the community perception on the waste management was good enough, but the participation was still very low both direct and indirect participation. The implementation of waste bank scenario and independent composter per–neighborhood can decrease the waste production entering the landfill (TPA) up to 13.5% and decrease the need of waste truck from 394 units to 333 units. The total cost of waste processing also decrease in amount of 180,257,000,000 in 10 years.