bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improving effectiveness and efficiency of assembly line with a stopwatch time study and balancing activity elements
Authors: Budiman Irwan , Sembiring Anita Christine , Tampubolon Jusra , Wahyuni Dini , Dharmala Andrew 
Published: September 2019

Abstract

Background:The rapid industrial development requires companies, especially those engaged in manufacturing, to keep growing and compete to maintain their business. Generally, companies want a short work time to meet production targets and increase profitablity. However, some small and medium enterprises tend to overlook the time standards in their production activities, which causes time and labor waste. This research was conducted to determine the standard time and provide recommendations for achieving the balance of assembly lines. Methods: This study used work time measurement techniques using the time study method with stopwatch. Primary data collection is carried out directly to workers at assembly company. Data is processed by testing data uniformity and data adequacy. Furthermore, the data is used to determine the rating factor, normal time, standard time, and the recommended balance of assembly lines. Results: The results showed that the measurement of working time had a significant impact on the effectiveness and efficiency of production activities by reducing costs for workers by 6.67% and working time to 1.45 seconds faster, as well as achieving the amount of production exceeding the production target. Conclusion: Working time measurement techniques with the time study method using stopwatch can be further investigated and applied to both large industries and small and medium enterprises.
Fulfillment of Customer Orders with Distribution Improvement
Authors: Sembiring Nurhayati , Tarigan Ukurta , Siallagan Syahputra 
Published: September 2019

Abstract
A company engaged in shrimp feed production, has 4 physical distribution networks, namely: PT. JWL, PT. SWS, PT. BWP, and, CV. WS. Logistics problems at the company is not achieving the fulfillment of customer orders with the right amount and the right time. This is due to the company’s inefficient inventory, distribution and transportation systems. The method used to solve inventory problems is to set safety stock. To solve distribution problems use Distribution Requirement Planning, Reorder points and determine the order frequency. Through a series of processing and problem solving steps, it is known that the total needs that must be met by the company is 10.502.308 kg with a safety stock of 132,860 tons.
Increasing service systems in network distribution
Authors: Sembiring Nurhayati , Sinaga Tuti Sarma , Ayuningthias Jean 
Published: September 2019

Abstract
A company that engaged in the chemical industry and produces urea and ammonia,needs an arrangement on the distribution chain to suppress the possibility of stock out. An inventory on Disaster Centre is arrange in order to meet the demand of retailers. The determination of distribution routes that can reduce waste in terms of the use of transportation facilities as to minimize the time, and distance is analized by Distribution requirement planning method. Using the selected forecasting function based on the time series method, the total demand for the next 12 months is obtained, by calculating by applying the distribution requirement planning method, an total request cannot be fulfilled decrease by 67.38% from 417 orders to 136 orders.
Redesign of Facility Layout with Graph Method and Genetic Algorithm in Wood Manufacturing Plant
Authors: Tarigan U , Herdita G Y , Tarigan U P P 
Published: September 2019

Abstract
Facility planning is a plan for a facility to operate synergistically in the production process, in accordance with the planned objectives. PT. XYZ is a manufacturing company in the industry that uses wood for furniture. The layout of facilities at PT. XYZ has found an irregular material flow pattern so that there is a line crossing from the joint f station to the laminating station and tapping station to the cutting station. Inefficient production lines also produce quite long production lines. In solving this problem, graph methods and genetic algorithms are used. The graph method uses from to diagrams to make proximity graphs based on the greatest weight. Genetic algorithms are based on the principles of genetics and natural selection. The genetic algorithm uses a generation mechanism so that the optimal layout results are obtained. The results showed that the actual moment of total displacement was 3,422,846 meters/month, the total moment of displacement using the graph method was 926263.69 meters/month, and the total moment of movement using the genetic algorithm was 756439.1 meters/month. The results showed that the improvement of the layout using genetic algorithms was chosen because it had an efficiency of 77.90%, higher layout improvements using graph methods with an efficiency of 72.90%.
System dynamics simulation to determine financial strategy for social health insurance in Indonesia
Authors: Kurnianingtyas Diva , Santosa Budi , Siswanto Nurhadi 
Published: September 2019

Abstract
Social Health Insurance (SHI) in Indonesia is still experiencing financial constraints because the financial condition of the SHI has continued to be a loss since it was established in 2014 until present so it becomes special attention needed to get achieving the Universal Health Coverage (UHC) target by the government. Therefore, this study intends to provide an appropriate SHI financial strategy recommendation by considering the stability of the balance of income and expense. In addition, a system dynamics simulation approach is needed to find optimal SHI financial strategies with variables including participant premium rates, average cost of benefits, number of health cases, and number of insurance participants. The data used came from BPJS Health data for 2016 and 2017. Afterwards, the equation used was Income ≥ Expenditures. In addition, there are several scenarios designed to reduce the level of financial losses that occur at SHI. The scenario of reducing the number of health cases is the best strategy recommendation decision. The results show that reducing average benefit costs and increasing premium rates also gets it can reduce financial problems. From the results that have been obtained, this study can contribute to the resolution of SHI Health financial problems in Indonesia.
The Effect of Habits on Wearing Footwear And hand washing after playing on the ground Against Worms in Primary School Al-Wasliyah In Medan Deli
Authors: Ramadhani Nasution Sri Lestari , Nasution Ali Napiah , Suhartomi  , Nasution Sri Wahyuni 
Published: September 2019

Abstract
World Health Organization reported in 2015 more than 1.5 billion population is infected with Ascaris Lumbricoides and in Indonesia on 2013 the average prevalence of infection reaches more than 28%, this study aims to investigate the effect of habits on wearing footwear and hand washing after playing on the ground against worms. The type of this research is Explanatory Research, Data were collected through interviews, documentation and examination of stool, Data was analyzed by univariate, bivariate and multivariate test. The results showed of the effect of wearing footwear Against Worms with p value 0.002 and Exp (B) 43.587 in Confidence Interval 95% is 3.848 until 493.702 and handwashing habits after playing on the ground had an effect on helminthiasis with a p value of 0.007 and Exp (B) of 28.629 in Confidence Interval of 95% between 2.482 to 330.196. According to researchers, worms live on the ground and are very quickly transmitted through the skin of the soles of the feet therefore every child needs to use footwear every time they leave home and the best way to break the chain of transmission of worms by maintaining personal hygiene, such as washing hands with soap after playing on the ground.
Determination of trash hauling routes using floyd warshall algorithm in medan barat district
Authors: Syahputri K , Rahmi M S , Indah R , Mangara M T , Josua  
Published: September 2019

AbstractMedan Barat District have many environmental problems includes unoptimal waste management which is resulted by a large number of trash. The large number of trash is not well transported and the area serviced by waste managements are 9 points of temporary landfill which is the waste volume of each temporary landfill point is different, this study applies Floyd Warshall method to determine the waste transport route in Medan Barat District. This method allows the determination of routes by taking into vehicle capacity and volume of waste at each polling station. The data used is the distance between the pool with the temporary landfills point and the distance between the temporary landfills points. The results obtained in this study that total distance of all trucks carried out in Medan Barat District is 415 km and after using Floyd Warshall method, a total distance has been 387,11 km and total saving distance is 6,7%. Total cost has spent in Medan Barat District about Rp.712,000 per day and after using Floyd Warshall method, total cost has been Rp. 664,000 per day and total cost saving 6,7%. Based on the result, it indicates that the route made using Floyd Warshall method produces a better trash hauling route.
Economic Feasibility Analysis of Hydrogen Production from Raw Materials of Oil Palm Empty Fruit Bunches
Authors: Rahmi M S , Taufiq B N , Indah R , Syahputri K , Mangara M T , Wandika A S 
Published: September 2019

Abstract
The potential of hydrogen as a fuel for the future has been discussed as a part of the energy agenda for decades. Many research projects led by academics and engineers are directed by the future use of hydrogen in the energy supply chain for road transport, and power generation for energy storage. Economy base hydrogen is a long period for many countries being sustainable energy system. The policy maker also learn the implementation and challenges an economy change based on carbon doesn’t sustainable to be economy sustainable hydrogen. Challenge in build infrastructure discussed from perspective planning for the economy of hydrogen production feasibility. In this study, the economic feasibility of hydrogen production was calculated from raw oil palm empty fruit bunches in North Sumatra. Assessment of several factors in getting results BEP production value is 175.965 kg with a value of Rp37.684.532.764 NPV, IRR of 13.976%, and PBP during 6 years, 5 months.
Improving Hospital Service Quality Strategy with Servqual and Kano Methods
Authors: Tarigan U P P , Sitepu G A , Budiman I , Sembiring A C , Saragih K P , Zhow H 
Published: September 2019

Abstract
In daily activities, human beings cannot be separated from the services offered by a particular organization, such as the use of public transportation, education, food, health and much more related to daily life. Therefore competition between services is inevitable. Quality is related to customer satisfaction. Customers will be a benchmark for the good or not the quality given by a particular company. Companies can increase customer satisfaction by providing good service of course. Hospital is one of the companies engaged in public health services. To get what the customer wants, the hospital is required to give maximum satisfaction to its customers, but the reality is still often encountered customer dissatisfaction while using hospital services. In addition, based on the results of previous studies, it was found that some attributes of service attributes were still at the level that needed improvement. In addition, based on the results of previous studies, it was found that some attributes of service attributes were still at the level that needed improvement. Corrective actions can be done by the Kano method. The Kano method categorizes the attributes of products or services based on how well the product or service can satisfy customer needs, with service attributes can be divided into several categories.
Priority of Selection Suppliers with Fuzzy ANP COPRAS-G
Authors: Siregar I , Rizkya I , Syahputri K , Sari R M , Anizar  , Ariani F , Pintoro A 
Published: September 2019

Abstract
The company which is engaged in spring bed production is located in Medan city Procurement of raw materials is the main activity in ensuring the clear production. Delivery delayed by suppliers of raw materials affects the clear production and impacts on order delivery to customers. Delivery delay of the company happened in raw materials foam and wire by each supplier with a frequency of 66% from the total delivery made. Therefore, supplier evaluation needed done and the company take an appropriate decision based on the priority suppliers. Integration of Fuzzy Analytical Network Process (FANP) and Complex Proportional Assessment with Grey Theory (COPRAS-G) is used in the evaluation of the supplier where the scale of influence among criteria and assessment of suppliers of the criteria obtained using a questionnaire distributed to five managers to gain weight, weight criteria which is serves as in inputs for priority suppliers. Results priorities foam raw material suppliers are HI, PF, MF, and DCI which is the priority sequence obtained suppliers of wire raw materials supplier are BUWI, AJ, and GGS.
Measurement of Supply Chain Performance in Manufacturing
Authors: Rizkya I , Hidayati J , Syahputri K , Sari R M , Siregar I , Siregar K , Utaminingrum J 
Published: September 2019

Abstract
Supply chain management has been a major component of a company’s strategy to compete each other through the increasing of organizational productivity and profitability. This paper is useful to provide an application of supply chain performance assessment in the manufacturing industry as an effort to increase the company profitability. Performance assessment metrics of supply chain provides information in the position of the company achievement. That condition capable to provide good management by an overview of the company achievements to meet customer demand. There is no measurement of supply chain performance in good condition of the company. Company problem found and finally caused by the company unable to meet demand leads the loss of customer trust. The Performance of Activity (POA) model is capable to describe the real conditions of the company’s supply chain performance. Measure the supply chain performance using POA model. POA model have 7 dimensions of assessment, namely cost, time, capacity, capability, productivity, utilization, and results. By using the performance of activity, there are two dimensions achieved, namely the availability of the company (90.8%) and machine utilization (75,1%). which is a dimension is not achieved well, namely the reliability (86.7%).
Role Analysis: Trust in Mediating Informal Learning towards Customer Behavior to use Electronic Banking
Authors: Akbar Mohammad Aldrin , Yendra  , Nursyamsi Idayanti , Budiman Edy 
Published: September 2019

Abstract
This study aims to analyze the role of trust in mediating informal learning on customer behavior to use electronic banking in one of the cities in Eastern Indonesia. The sampling technique used in this study was purposive sampling. Data was collected by giving questionnaires directly to respondents. The total sample that can be further analyzed is 110 respondents. Data analysis using Structural Equation Modeling - SEM using the AMOS program. The results show that trust is proven to mediate informal learning on customer behavior to use electronic banking. Based on the three findings of this study, it appears that trust can fully mediate the relationship between informal learning and the actual behavior of customers in using electronic banking. Based on the results of this study, the trust variable is very important in predicting customer behavior. Therefore, service providers need to understand customer trust and this information can only be obtained through ordinary research results.
JProbiotic activity of lactic acid bacteria isolated from several commercial fermentation product in Medan, North Sumatera
Authors: Davidson A L , Lase E , Lister I N E , Fachrial E 
Published: September 2019

AbstractLactic Acid Bacteria (BAL) are bacteria that have been used to produce food, which is in the manufacture of fermented milk. In addition, LAB can also be used as a probiotic agent. This study was conducted to look at the resistance of antibiotics, acids and bile salts as a criterion as probiotics. Samples were taken from 6 commercial fermentation products containing BAL. The isolation results obtained all samples had a number of BAL 106colonies so that according to the probiotic criteria with the highest number of colonies were Y samples. Test results on 6 types of antibiotics (gentamicin, amoxicillin, ofloxacin, erythromycin, cefotaxime, oxacillin) U samples were resistant to all antibiotics and then product Y. In the test of acid and bile salts, only U samples were taken as the most resistant to antibiotic samples. The test results found that U samples were resistant to acid and bile salts with 100% viability. Keywords: lactic acid bacteria; probiotics; antibiotics; fermented products.22,7.
Weighted knn using grey relational analysis for cross-project defect prediction
Authors: Ulumi DI , Siahaan D 
Published: September 2019

AbstractDefect prediction plays important roles in detecting vulnerable component within a software. Some researchers have tried to improve the accuracy of software defect prediction so that it helps developer to manage resources (human, cost, and time) better. They focus on building the software defect prediction model only for a specific domain. To our knowledge, research on cross-project domains has not been carried out before. This research developed method to predict software defect for cross-project domains. Thus, the domain contains datasets with different number of features. To extend shorted features in a dataset, the method calculates the missing values. This research employed weighted KNN to fill in the missing value. The refilled datasets were then classified using naive bayes and random forest. This research also conducted a feature selection process to select relevant features for detecting defects by means of a comparative analysis of methods of selection of features. For the experimentation, this research used seven NASA public dataset MDPs. The results show that for imbalance data, naïve bayes combined with information gain (IG) or symmetric uncertainty (SU) feature selection produced the best balance, i.e. 0.4975. It also shows that for balance data, random forest combined with gain ratio (GR) produced the best balance, i.e. 0.7795. In general, the developed method performed relatively alike the previous method, which classify only specific domain, i.e. 0.4975. It even outperformed previous method for dataset PC2, i.e. 0.4033.
Improved Security of Data in Cloud Network to Prevent Detect Key Recovery Attacks Using Node Creation for Authentication
Authors: Putra Adya Zizwan 
Published: September 2019

Abstract
The use of internet in the past decade has increased rapidly people using it for transmission of data saving their works, storing all the private information in a system and transmitting through internet. Due to high usage of internet there is also possibility of losing data by unauthorized access and getting hacked and misuse of data. Previously there was a method used known as kids, but the problem with this method was the method used for generation of key and keeping it secrecy, the attackers could easily get access to the key after black box attack. In this paper the proposed system helps to provide more security and prevents it from attacks and also protect the data stored in the system. The proposed schema can be implemented in hospitals for health care domain, for saving the data of Patience by using cloud storage by using it in the detection system. Many developers and researched have introduced schemes in Machines learning and one of this scheme was key based detection system, But this system required more security to prevent from the attackers, in the proposed module am using cryptographic algorithm for creating secret key and for saving the data and Bowl Fish algorithm to hide the data from the attackers and recover the key from the AES algorithm which is saved in encrypted format which has steps of verification to recover the key and give prevention against unauthorized usage and it provides security from the attackers by saving all the data of patience in a hospital using different domains kept in cloud platform.
Application of C4.5 Algorithm for Cattle Disease Classification
Authors: Indra Evta , Ho Kevin , Arlinanda  , Hakim Ridho , Sitanggang Delima , Sihombing Oloan 
Published: September 2019

Abstract
Data mining is a series of process to gain values such as informations that is manually unknown from a database by mining patterns from the data (with the intention to manipulate data into more useful information that is obtained by extracting data and recognizing important pattern or pulling data from the database). The intend of this research is to process cattle disease cases, which so far no research has been done to produce useful knowledge/science for institutions (Food and Livestock Security Agency) using data mining technique (C4.5 Algorithm). In the future, this research will be used by Food and Livestock Security Agency to counsel rancher in some area. This research will result a decision tree which will also classify rate of cattle disease. Proven by using the C4.5 algorithm, it can speed up the process of classification disease which initially takes about 1-2 months, and after using this application the results can be obtained right away.
Audio steganography applications using auditory features watermarking
Authors: Banjarnahor Jepri , Siregar Saut Dohot , Sihombing Oloan , Turnip Mardi , Purba Windania , Aisyah Siti , Banjarnahor Jaidup 
Published: September 2019

Abstract
Watermarking is a technique for hiding data or information on a digital multimedia (image, sound and video) and is not visible to the ordinary eye and is resistant to digitization (editing media, noising, blurring, etc.). While audio watermark is defined as a technique of hiding data or confidential information into an audio data for “boarding” (audio host), people do not aware of the existence of additional data on the data host. Coding phase is hiding data by exchanging the original phase of the initial segment of the sound signal with the absolute phase of the watermark signal, while maintaining the relative phase between the signal segments using different phase segments of the original signal. When the phase difference between the original signal and the modified signal is small, the difference in sound produced is not detected by human hearing. To recognize ownership of multimedia content, testing is done first by combining the cover and watermark files. Experiment result on audio files shows that audio files successfully compressed on 50% efficiency without reducing the duration of the audio. After compression process, One of our audio sample which size is 3.37MB can be reduce to 1.68MB without reducing the duration of the audio.