bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimization of Charles Gay-Lussac’s law experiment with temperature correction at the capillary pipe and fixed volume to improve the accuracy of experimental data in Polban applied physics laboratory
Authors: Muldiani R F , Hadiningrum K , Pratama D
Published: May 2020

The results of Charles Gay-Lussac’s law experimental tools at Politeknik Negeri Bandung (Polban) Applied Physics Laboratory show the pressure value of 1.027 x 105 Pa with relative uncertainty value of 11.1% and the number of moles in a flask of 12.47 mmole with relative uncertainty value of 24.3%. The experimental data has relatively low accuracy. In this study, Charles’s Law experimental tools were optimized by a measured temperature correction on the capillary pipe using the conduction concept. The heat distribution equation that occurs in capillary pipe was solved by numerical solutions using the finite difference method. The modification of Gay-Lussac’s Law experimental tools to get fixed volume was located on the manometer integrated with a glass flask. Data collection techniques were carried out in two different circumstances, namely when the system is experiencing heating and cooling, then compared. After temperature correction, it was obtained that pressure value 0.977 x 105 Pa with relative uncertainty of 5.7%. After using integrated manometer and data collection techniques when cooling, the number of moles in the flask was 21.5 mmole with relative uncertainty value of 6.2%. With the correction of temperature in the capillary pipe and the volume maintained provides more accurate experimental results.
Pure premium calculation of rice farm insurance scheme in Indonesia based on the 4-parameter beta mixture distribution
Authors: Mutaqin A K , Karyana Y , Sunendiari S
Published: May 2020

The Indonesian Government introduced rice farm insurance scheme (Asuransi Usaha Tani Padi – AUTP program) to protect rice farm from loss caused by flood, drought and pest and disease infestations. It has been discussed the method to calculate pure premium of the rice farm insurance scheme in Indonesia with assume that the distribution of rice yield data is normal distribution, gamma distribution, or normal mixture distribution. The normal distribution can be used for the case of distribution of rice yield data in the form of symmetry. The gamma distribution can be used for the case of distribution of rice yield data in the form of skewed to the right or positively skewed. In addition, the normal and gamma distributions are categorized as unimodal distributions. It has also been discussed the method of calculating pure premium of the rice farm insurance scheme in Indonesia with the assumption that the rice yield data is normal mixture distribution. The normal mixture distribution can be categorized as multimodal distribution. Characteristic of the normal mixture distribution is suitable for rice yield data in Indonesia that contain rice yield data from several provinces. On the other hand, it is also known that the 4-parameter beta mixture distribution can be applied to rice yield data in Indonesia. This distribution is more flexible than the normal mixture distribution in terms of the tail shape of the distribution. In this paper, pure premium calculation method of the AUTP program is formulated with assume that the distribution of rice yield data is the 4-parameter beta mixture distribution. Monte Carlo simulation is used to evaluate performance of the method. The method is applied to the rice productivity data in several provinces in Indonesia for the period 1970 to 2016.
The combination of anaerobic-aerobic and coagulation-flocculation method using tamarind seed as natural coagulant for tofu wastewater treatment
Authors: Ramadhani L I , Rahmaningsih Y D , Amanda N R , Budiastuti H
Published: May 2020

The high demanding for tofu as a food containing high protein’s source in Indonesia is followed by the increasing number of the waste produced in this industry, both for solid and liquid waste. The high amount of organic material measured as COD (9,880 mg/L) of this wastewater makes it potential to be treated biologically. To enhance the process efficiency and the better quality of effluent, biological process was combined with coagulation and flocculation process as the finishing processes in this study. The research’s purposes were firstly to evaluate the more effective method between two biological process that were the aerobic process (method 1) and the combination of anaerobic-aerobic process (method 2) and secondly to determine the best dose of tamarind seed as the natural coagulant. Doses variant used were 1,000 ppm, 2,000 ppm, 3,000 ppm, and 4,000 ppm. The result showed that method 1 has the slightly better performance of COD removal compared to the second method, which was about 89.744%. At the coagulation and flocculation process, 2,000 ppm of tamarind seed as natural coagulant gave the best result on decreasing turbidity level of method 1 (63.745%) while the highest dose (4,000) was needed to reduce turbidity level of method 2 effluent as much 26.41%.
Sub critical water-methanol condition of rice bran oil for biodiesel production
Authors: Prihandini G , Elizabeth L
Published: May 2020

Biodiesel produced in conventional way by using catalyst make environment harmful. Subcritical water is a new method, green technology which can be employed to convert rice bran with water and methanol to fatty acid methyl ester (FAMEs) or biodiesel with adding CO2 and N2 gas as co-solvent. The aim of this study to investigates the influence of operation condition of biodiesel production from rice bran oil. Some solvents concentrated, range of temperature, pressurized gas and reaction time were applied in this research. Rice bran, water, and ethanol were put into subcritical water reactor in a certain ratio at 40bar to carried out the reaction under subcritical condition. The best condition 30/10 methanol-water (v/v), t = 7 h, T = 200 °C, CO2 as co-solvent was highest yield oil obtained 18% with oleic acid methyl ester as the major identified biodiesel.
The potential of liquid fuel production from lignite using bio-solubilization method in Indonesia
Authors: Gantina T M , Iriani P , Kurniasetiawati A S
Published: May 2020

Indonesian coal reserves amounted to 20.98 billion tons, which was dominated by lignite of 59%. Its abundance, various usage, and relatively cheaper price is some of the many profitable traits for it to be used as an energy source for many industries especially in Indonesia. However, most of the type of low-quality lignite (96.4%) may result in a serious case of air pollution. For this reason, direct combustion is not an ideal process to extract energy from coal for environmental protection. This study aims to research the potential of lignite conversion into liquid fuel which considerably has less emission. A process called bio-solubilization utilizes the role of microorganisms to convert solid coal into liquid fuel/chemical compounds while still producing environmentally friendly by products. Furthermore, lignite contains simple aromatic compounds which is a favourable condition to optimize the process. Through several study review, it seems that there are still many microorganisms’ behaviours which need to be investigated further to ensure a steady process of solubilization, regardless the great potential of bio-solubilization. However, there is a hope of liquid coal production yield optimization, one of which is by pretreatment process which helps in increasing the susceptibility of brown coal to microbial solubilization.
Biodiesel from Palm Fatty Acid Distillate (PFAD) and its nature of oxidative stability
Authors: Budiastuti H , Shabrina N , Rohmah U , Widarti S , Gantina T M
Published: May 2020

Palm Fatty Acid Distillate (PFAD) is relatively cheap and its utilization does not compete with food needs. The availability of PFAD in Indonesia is considered sufficient as a supply of raw material for making biodiesel. This study aims to make biodiesel from PFAD in accordance with SNI 7182-2015 and to determine the best concentration of antioxidant additions. The research stage begins from making biodiesel through esterification reaction at 60 °C for 1 hour and continues with determination of each biodiesel Induction Period (IP) using a modified Rancimat device. PFAD used consisted of 99.85% mole total free fatty acids, consisting of 88.35% mole of saturated fatty acids and 11.5% mole of unsaturated fatty acids. Based on the research results, biodiesel produced meets SNI 7182-2015 from parameters of density, viscosity, alkyl ester content, and oxidative stability but does not fulfil the requirement of water content and value of acid numbers. The average IP in pure biodiesel has reached the minimum standard of 6 hours, which is 6.15 hours. Additions of six antioxidant Z concentrations (0.1, 0.3, 0.4, 0.5, 0.7, and 0.9 ppm) resulted in 0.1 ppm as the best antioxidant concentration in increasing IP to become 11.05 hours.
Analysis of vegetable waste degradation effectiveness for biogas feed in single batch reactor
Authors: Wachjoe C K , Gantina T M , Kurniasetiawati A S
Published: May 2020

An anaerobic ecosystem requires organic compounds and nutrients, such as nitrogen and phosphorus to produce biogas. The biogas production, in general, needs the C/N ratio of 25–30 for the proper development of a biological process. To reach the optimal C/N ratio, the importance of the balance between the nutrients in the anaerobic digestion process was assessed at laboratory scale. The first method stage used in this study is the utilization of EM-4 microbial starter and 3% of NaOH in the pretreatment process of vegetable waste feed which aim to increase the C/N ratio meanwhile maintain the protein content itself. The second stage is the addition of GP-7 microbial starter and cow dung waste mixture during the methanogens process which shows satisfying results. Regardless the retention time which takes less than two times longer than the process without vegetables waste, the methane gas amount produced in this study (47%) is comparable to the one produced from cow dung waste only (50%). In spite of that methane production still tends to increase after 45 days of processing time.
Disability-friendly public space performance
Authors: Syaodih E , Aprilesti L P
Published: May 2020

Sustainable development goals no. 11 mentioned the need for reduced inequalities in disability. However, this equality in urban public spaces is not yet optimal. Public space is not yet sufficient in providing facilities for persons with disabilities. The purpose of this research is to measure the performance of public spaces based on perceptions of persons with disabilities. The approach method uses Importance performance analysis (IPA). IPA is considered a useful tool in examining customer satisfaction. Based on the results of surveys and IPA calculations, the performance of public spaces according to disabilities is generally not in accordance with their expectations. The performance components of public space ranged from 41.28% to 95% of the expectations of people with disabilities. Based on these results, better efforts from the city government and the community are needed to develop more disability-friendly public spaces.
Road infrastructure asset management strategy and its impact on the environment
Authors: Priyatiningsih K , Sutrisno M
Published: May 2020

The development of the economic sector is determined by services to the public through reforms that aim to place public satisfaction through the management of road infrastructure assets. Some research on road infrastructure assets still requires a deepening of studies related to the delivery of public services related to asset management systems. The purpose of this study is to find an appropriate road infrastructure asset management strategy through an integrated asset management system and asset management policies that can provide public satisfaction. This comprehensive approach to management strategies ensures that the performance of service provider assets is in line with the expectations of stakeholders including road users. This descriptive qualitative research is based on the perspective of road users as respondents, consisting of vehicle drivers from 50 transportation companies (people or goods) through interviews and observations. The results show aspects of asset performance based on the user’s perspective there are five aspects, namely productivity, efficiency, effectiveness, use of resources and institutions and this performance is integrated in the asset management system related to policies from the management authority through service delivery namely quality and mobility, risk and use and maintenance of resources. The conclusion of this research is that road infrastructure asset services can be improved through the concept of road infrastructure asset management strategies in an integrated management system with five aspects of performance and more directed towards asset management policies related to the provision of road infrastructure asset services.
Design of Ciodeng suspension bridge, Indonesia, for pedestrian
Authors: Ramdhani A L
Published: May 2020

Suspension bridge is a type of bridge which have the deck hung below the suspension cables on vertical suspenders. The bridge is commonly used for long spans. One of the longest suspension bridge is Akashi-Kaikyo in Japan. Cost effective, suitable for long span bridge, have more flexibility and less complicated construction are the advantage of suspension bridges. Therefore suspension bridges are not only designed for vehicles but also for pedestrians. Suspension bridges for pedestrian are usually located in rural areas due to obstacles such as rivers, valleys or plantations. This paper presents a design of suspension bridge for pedestrian. The design refers to “Manual for Design and Build of Suspension Bridge for Pedestrian”. The suspension bridge is modeled using MIDAS Civil 2019. The output of the software is the internal forces consisting of moments, shear and normal forces used to design section properties and connection models. Based on the analysis and design process, obtained the dimensions of the bridge element; IWF.250.125.9.6 for the main girder, 150.100.9.6 for the cross girder, C.50.45.5.7 for the secondary girder, 250.250.14.14 for the pylon, L.50.50.5 for the bottom bracing, 60 mm for the main cable diameter, 20 mm for the hanging rod diameter, and 20 mm for the wind cable ties diameter.
Development of green building maintenance information system for electrical components based on ministerial regulation
Authors: Indriani I , Latief Y , Machfudiyanto R A
Published: May 2020

Green building maintenance is a series of structured, complicated and complex work. Maintenance of building components can support the achievement of building reliability requirements, which are safety, comfort, health and convenience. If this maintenance work is not done properly, it will cause problems and damages, such as trip, corrosion, overheated, electrical short circuit to building fires. This research aims to improve the maintenance performance of green building electrical components in order to achieve building reliability requirements by developing an information system. The research methods used are a systematic literature study of major academic and research papers and a case study of information system development in a green building to achieve the aim of this research. The result of this research is a web-based information system consists of guidelines for electrical components maintenance. This guideline informs about damages, damage categories, causes of damages, activities and schedule for each of electrical components maintenance in a green building. The result of this research revealed that green building maintenance guideline in a web-based information system will help to reduce the problems and damages that often occur in electrical components, thereby reducing the harmful impacts that can occur in a green building and its surrounding environment.
Development of maintenance information systems for landscape and housekeeping components for state green buildings based on state building maintenance guidelines
Authors: Kadarwanto H H , Latief Y , Machfudiyanto R A
Published: May 2020

The problem raised in this study is that the landscape and housekeeping components are damaged so that they do not reach the standard of landscape and housekeeping performance and cannot be used. This has an impact on 4 building interior requirements not being achieved (comfort, safety, health and convenience) and also maintenance operational costs. The problem is caused by the ineffective system of maintaining landscape and housekeeping. The purpose of building maintenance is to make the function, structure, and aesthetics of the building maintained in accordance with the initial conditions. The purpose of this study is to improve maintenance performance landscape and housekeeping components of state’s green building. The research methods used are surveys, literature reviews, and case studies. The result of this study is prove that the maintenance work of green buildings using Minister of Public Works Regulation No. 24/2008-based website can improve maintenance performance landscape and housekeeping components of state’s green building.
Bolt connection performance post fire in steel bridges
Authors: Gunadi R , Moeljono M , Igustiany F , Hasan N
Published: May 2020

Fire events reduce the strength of the steel structure on the bridge and can cause collapse which results in losses, so it is necessary to consider the effects of fire when planning construction. Considering that the joints affect the performance of steel structures, the results of research on the performance of steel beams need to be augmented by testing the post-fire girder bridge bolt connection performance. Structural tests will be carried out on six specimens of bridge steel beam elements with high quality bolt connections in the center of the beam with sliding type bolt connections. Two control specimen beams were tested with shear loads without combustion. Two specimens with temperature of 700°C and 900°C with different torque bond variables. From the displacement control test using UTM on six specimens, it will be known the performance of each type of connection by evaluating changes in carrying capacity, stiffness, deflection capacity, ductility, and stress-strain capacity due to the influence of temperature acting during the fire process. The results can prove which type of bolt connection is better for use on bridges with fire risk.
Causes of delays in construction project for developing Southeast Asia countries
Authors: Wuala H D , Rarasati A D
Published: May 2020

Delay in construction industry impact the time and cost of project and mostly being the basis of dispute between stakeholders of the project. To reduce the impact, knowing the causal factors and lesson learned from past projects and studies is essential. Through this study, a literature review on the subject of construction delay factors studied in Indonesia, Malaysia, Thailand and Vietnam was undertaken to identify top factors and to determine whether there are special causes referring to this region. A comparison was made to a similar study on developed economies in Europe and North America. The result of the study revealed that the most significant factors causing delays in the Southeast Asia developing countries were related to contractor (material shortages, improper/ineffective planning, poor site management and supervision, and equipment shortage and failure), and owner-related causes (financial/payment issue and design change/variation order). The results of the study support the view that contractors handling projects in developing countries are dealing with the shortages problems, inefficiency/incompetence of the contractor, and problems caused by clients.
Effect of marble waste aggregate percentage with fly ash admixture toward compressive strength of pervious concrete
Authors: Raimon A , Istiqomah I , Kudwadi B
Published: May 2020

Pervious concrete with marble and gravel substitution shows low compressive strength. In another attempt the experiments carried out by adding fly ash as much as 20% of the weight of cement showed an optimal strength. This research aims to increase the compressive strength of pervious concrete by modify coarse aggregate proportions and adding fly ash admixture. Method that used is experimental with 4 variations aggregate size mixture. Type 1 are aggregate variation size of 2 cm, 1,5 cm, and 1 cm, type 2 are aggregate variation size of 2 cm and 1,5 cm, type 3 are aggregate variations size of 2 cm and 1 cm, and type 4 aggregate size 2 cm. Tests are on permeability test and concrete compressive strength test on age 3 days, 7 days, 14 days, 28 days. Permeability test results based on type of variations aggregate size respectively are 0,750 cm/sec, 0,737 cm/sec, 0,647 cm/sec, and 0,840 cm/sec. The results of the compressive strength test on all type at 28 days respectively are 8,008 MPa, 9,879 MPa, 11,542 MPa, and 8,357 MPa. Results of research on variations in the mixture, the maximum compressive strength is variations of coarse aggregate size 2 cm and 1 cm.
Enabling electricity access to rural areas in Indonesia: Challenges and opportunities
Authors: Indah R N , Rarasati A D
Published: May 2020

Energy is at the core of important issues such as economy, environment, and world development. A developing country like Indonesia needs energy access in order to increase its prosperity. Indonesia successfully surpassed the electrification ratio target at the end of 2018. However, electrifying the remaining 1.7% will be more difficult and costly. This paper provides a better understanding of the challenges of rural electrification program and opportunities to achieve universal electricity access. In this research, a literature review method was used to collect and review relevant studies regarding rural electrification program. Based on this literature review, the characteristics of rural areas such as low population density, low income and low electricity demand were found to be the main challenges. According to these studies, committed governance, supportive regulations and policies, and well-prepared financing can overcome said barriers.
Analysis of variables that influence formation of waste management institutions in Indonesia
Authors: Akliyah L S , Kurniasari N , Odah O , Burhanudin H , Fachrudin I , Alhamd A , Fachmi A , Wibowo C
Published: May 2020

One of the Sustainable Development Goals main objective is clean water and sanitation. It can be implementated by applying the 3R (Reduce, Reuse, Recycle) concept in waste management. One of the villages in West Bandung Regency which is expected to be able to apply the 3R concept in waste management is Kiangroke Village. The application of this concept that began about 3 months ago by forming a garbage collector. The formation of waste management institutions in that village is expected to be realized in the future. So that, it can provide economic value to the village. For this reason, it is necessary to analyze the variables that affect formation of waste management institution in Kiangroke Village. The objectives of this study are: identification of variables that affect formation of waste management institution and mapping the relationships between variables. The data collection method was carried out through a questionnaire. There were 10 variables concidered in the research based on the Focus Group Discussion. The analysis method is the Micmac analysis. Based on the the analysis, it was found that the most influential and most dependent variables included the role of the village government, the role of the environmental awareness group, availability of facilities and infrastructure, and the budget availability. Based on this, it is necessary to have an institutional waste manager accompanied by the availability of facilities, infrastructure, and budget.
Local wisdom in the spatial system of the palace, Indonesia
Authors: Agustina I H , Ekasari A M , Fardani I , Hindersah H
Published: May 2020

The Kanoman Palace has primordial tradition that remains authentic. This local value is new knowledge that must be preserved and considered as indigenous knowledge. In accordance to the mandate of UNESCO in Habitat III regarding “culture and heritage” in 2015, that being attentive to culture in urban development is very urgent because it has an impact on the attractiveness of the city, but this mandate has not been contained on the spatial planning documents of Cirebon City. As a result, the indigenous knowledge will be lost in time and reduces the attractiveness of the city. The purpose of this research is to describe the substance of authenticity in the local wisdom value of the Palaces in Cirebon, but it emphasizes more on the authenticity of the Kanoman Palace. The approach method used is rationalistic approach, through qualitative descriptive analysis, from the findings of previous research which then identified the parameter of authenticity in Cirebon Palaces. The implication of this study can be considered as input to the government in Cirebon City, particularly the Office of Spatial Planning to include the local wisdom value substance as a legal document in the spatial planning of Cirebon City.
Traffic engineering simulation of campus area transportation using MATLAB SimEvents
Authors: Harahap E , Badruzzaman F H , Permanasari Y , Fajar M Y , Kudus A
Published: May 2020

Traffic Congestion occurs because of the high number of transportation equipment that is not proportional to the limited capacity of the highway. This condition often occurs in densely populated areas with high levels of community mobilization. This situation generally occurs in the campus environment. The smooth traffic system in the campus environment is one of the parameters of the orderly traffic community, besides the feasibility of facilities and the capacity of the highway around the campus. Traffic jams around the campus generally occur because of various campus activities including crossing the road, parking vehicles, and others. This congestion is also influenced by activities outside the campus such as the entry and exit of vehicles to an agency, the number of public vehicles that pass, and others. In this paper a number of alternative solutions are proposed for solving congestion problems through a traffic engineering simulation and run using the SimEvents MATLAB application. It is hoped that this method can be obtained and evaluated analytically regarding the accuracy, effectiveness and efficiency of the traffic engineering. The traffic engineering simulation was built based on queuing model.
Optimization of farmer pattern as an effort to improve farmers’ income and environmental friendliness in Bogor, Indonesia
Authors: Arifien Y , Badri I , Fitriani A
Published: May 2020

Setting the cropping pattern in the use of paddy fields is one of the important steps that determine the income, use, and distribution of farm labor. The study was conducted by utilizing secondary data production, cost analysis, etc. in the series 2009-2018 in Bogor Regency. The analysis uses linear programming by setting the raw area of paddy fields and paddy farmer labor as constraints and maximizing income as a goal. The use of agricultural land in the Bogor Regency continues to shrink every year. The optimal solution to the cropping pattern that is produced turns out to still leave land and labor resources, so an alternative cropping pattern is needed to utilize these resources. The recommended cropping pattern needs to be implemented through empowering farmer groups proportionally according to the area of land and labor they have.
Development of generator set operation monitoring system for performance analysis and periodic maintenance based on IoT technology
Authors: Hartono B S , Bambang P M , Wahyu B M , Pudin A
Published: May 2020

Generator sets or Genset, widely used as primary or backup source electric power generators. When the generator set is used as the main power to support field operations, it must be ensured that the generator set is in good condition. If the generator set in trouble when it is already in the field, it certainly will hamper the work significantly. This research developed an online monitoring system of generators operation based on the ThingSpeak, an IoT technology platform. The system can record the historical data of generators operation parameters, starting from the measurement of fuel level, engine temperature, until total energy (kWh) generated. The measurement data are used to offline analysis the performance condition of the generator or to determine the length of time to the next periodic maintenance. The development results showed the system has worked well following the design. The measurement data has been sent to the ThingSpeak IoT platform as a data logger. The data stored in ThingSpeak are the time stamp when the data received. It can be used to determine the duration of operation, fuel consumption, average operating temperature, and total energy (kWh) produced. The test results show the difference in the quality of the radiator water gives a difference in temperature gradient up to 0,8°C/kW. While fuel consumption in no-load conditions, the difference in fuel consumption is up to 0,2ml/sec.
Optimization of financial technology (fintech) with lean UX development methods in helping technical vocational education and training financial management
Authors: Hendriadi A A , Primajaya A
Published: May 2020

The effectiveness and optimization of financial services is one of the things that happens when there is financial technology or fintech. Various fintech services have a strategy to attract customers. One of the strategies is to offer promos to potential customers or early customers. Promos given to customers will provide maximum benefits when they use accurate type of promo on a promo provided by fintech services. Knowledge of various fintech services and a lot of promo information will provide an effective alternative for customers to use promos. For this reason, applications or software have been developed to provide information on various e-money and e-wallet services and promos. The method used is Lean UX which consists of 4 stages namely declare assumpts, Develop MVP, run experiments, feedback and user research. The result obtained on this research is a mobile androide application that can display fintech and promo information. Lean UX development is done with 2 iterations and produces features that are validly needed by the user but still need development in terms of User Experience.
Intelligence chatbot for Indonesian law on electronic information and transaction
Authors: Firdaus V A H , Saputra P Y , Suprianto D
Published: May 2020

In the Law Fiction Theory, it is assumed that once the government enforces legal norms at that time, everyone is considered to know the law. So that someone’s ignorance of the law cannot free him from lawsuits. This condition led to the emergence of legal cases caused by a lack of public understanding of the law. This paper introduces a potential solution by providing chatbots platforms. We propose chatbots designed to provide information, for those who need information about applicable laws. Users can ask about anything about applicable legal documents. Furthermore, the bot performs a search according to requests related to legal documents. Various request commands are given so that bots can behave like humans and provide the information needed by users. The experimental results have shown that chatbot could recognize all of the questions from user and could answer correctly.
Modeling user interface design for panic button application for deaf people using user-centered design method
Authors: Gumay M R A , Effendy V , Junaedi D
Published: May 2020

An emergency can occur at anytime, anywhere and at anyone. The local government offers an application called “Panic Button” as a solution to these problems. This application aims to help people who experience or see emergency conditions so that they can be followed up by the authorities. However, this application has not been targeted for disability users. The procedure for using this application still has weaknesses that make it difficult for users with hearing loss, especially when an emergency event is confirmed. Normally, emergency events confirmation uses telephone calls to the incident reporter (user). This confirmation method is a big problem for those users with disabilities to be able to confirm the details of emergency events. In this research, a user interface re-design was carried out at the application interface to be able to accommodate the users necessary. The user interface modeling is done using the User-Centered Design (UCD) method to produce a user interface design that suits the user’s characteristics and limitations. USE Questionnaire was used to test the resulting prototype and results in a usability value of 87% with an excellent category after the third iteration. These results indicate that the results of the re-design that have been done have met the needs of the deaf, with the use of appropriate communication for people with hearing loss so that they can confirm emergencies properly.
Performance analysis of video streaming service migration using container orchestration
Authors: Poetra F R , Prabowo S , Karimah S A , Prayogo R D
Published: May 2020

This paper proposes an implementation of container orchestration to accelerate the migration process from one cloud to another. The use of cloud computing as the infrastructure of a system is in high demand. Cloud computing has been adopted in the use of various applications that are very useful for organizations in establishing a system to reduce effort, cost, and time. The system that runs on the same cloud provider has disadvantages. If the cloud provider goes down, then all of the running services will be affected. Therefore, it is needed the solution to migrate the services to some containers with one controller. In this research, two types of architecture are compared, i.e. container orchestration architecture using Kubernetes and simple container architecture using Docker. We use Kubernetes since it is one of the most popular container orchestrators widely used in big company’s productions. The results show that the container creating time average in the container orchestration architecture using Kubernetes is 26 times faster and the percentage average of resource usage on CPU utilization is 3.6 times smaller compared to simple container architecture using Docker.
Fuzzy rule-based method for determining the educational curriculum for terrorism convicts in the penitentiary
Authors: Lolong W R J , Tangkawarow I R H T
Published: May 2020

The deradicalization program is run by the government against terrorism convict while in the penitentiary. The education program should be carried out by convicted individuals. To be able to achieve the results optimally, the substance of the educational curriculum applied to terrorism. The basis for its consideration based on particular criteria that give attention to the background of the convicted person. These specific criteria include the Courts Verdict, Education Level, Age, and Gender. The intended education curriculum covers life skills education, nationalism education and multiculturalism, and religious education. The purpose of the study is to determine the right curriculum for convict based on the existing criteria. We determine the curriculum using the fuzzy logic approach. The use of fuzzy rule-based methods facilitates the resolution of the right curriculum. The aim of this research insistence improves performance in the best decision making for terrorism convicts’ educational curriculum.
HR analytics: Employee attrition analysis using logistic regression
Authors: Setiawan I , Suprihanto S , Nugraha A C , Hutahaean J
Published: May 2020

Employee attrition can become a serious issue because of the impacts on the organization’s competitive advantage. It can become costly for an organization. The cost of employee attrition would be the cost related to the human resources life cycle, lost knowledge, employee morale, and organizational culture. This study aimed to analyze employee attrition using logistic regression. The result obtained can be used by the management to understand what modifications they should perform to the workplace to get most of their workers to stay. The data for the study were around four thousand employees, covering 261 days (one year working days) during 2015 — the data period between January and December. We use R for data integration, exploratory data analysis, data preparation, logistic regression, model evaluation, and visualization. The study has five steps: (1) data collection and business understanding, (2) data pre-processing, (3) exploratory data analysis, (4) model selection and training, and (5) test and evaluation of the model. The result of the study found eleven variables as key driving factors for employee attrition. It also showed that the model has 75 percent accuracy with 73 percent sensitivity and 75 percent specificity.
The optimalization of cosine similarity method in detecting similarity degree of final project by the college students
Authors: Purba R A , Suparno S , Giatman M
Published: May 2020

Technology development makes everything unlimited. Everyone easily to gets information. There are negative and positive impacts. The one negative impact is plagiarism the work of others. Of course this brings a bad impact. This study aims to examine the similarity of Student Final Reports at the Politeknik Unggul LP3M Medan. The method used is the Cosine Similarity Method. This method was chosen because it works based on mathematical calculations. How it works is by comparing the final project done by students with the final project that has been there before. With the Cosine Similitary Method, percentage of similarity will be obtained. If the similarity is high, the final project is said to be tracing.
Predicting the loan risk towards new customer applying data mining using nearest neighbor algorithm
Authors: Samsir S , Suparno S , Giatman M
Published: May 2020

Unstable economic conditions require Bank must be careful in deciding towards lending customers. Banks should not take the risk of giving loans to customers who cannot afford to pay. This study aims to assist bank in predicting lending. The study was conducted at the Bank Perkreditan Rakyat in Medan. The study was conducted applying data mining using the nearest neighbor algorithm. This algorithm was chosen because the nearest neighbor can calculate the closeness between new cases and old cases based on matching weights from a number of existing features. This algorithm will calculate the closeness with predetermined criteria. Hoped bank will be helped in making predictions.
Parking slot detection system based on structural similarity index
Authors: Adi G S , Fadhlan M Y , Slameta S , Rahmatullah G M , Faturahman A
Published: May 2020

A quest of vacant parking space in the public area can indirectly lead to traffic congestion which can be troublesome for drivers in terms of time efficiency. This study is expected to assist drivers to get the available parking slots information in a real-time manner and support the parking control systems by constantly updating the information of vacant parking slots positions in public areas. A vision-based parking slots recognition method is proposed to identify occupied areas by vehicle which is divided into two main parts: setup configuration and object detection. Canny Edge and Hough Line Transform are used to achieve line detection for parallel parking slot marking; contour extraction and bounding rectangular are then applied for an initial parameter to form a reference area as a region of interest (ROI). Moreover, Structural Similarity Index Measurement (SSIM) exploits the reference image and target image to identify whether the area is empty or occupied by vehicle depending on structure comparison. Experimental result shows, from 50 sample images of parking slots attained by surveillance camera, the detection accuracy of 92% and precision of 89% are obtained using selected features with tuning SSIM threshold level of 0.4.
Certainty factor and dempster-shafer method analysis for early detection of final year student depression
Authors: Sari R D , Rahmadani R , Putri T T A , Hutahaean H D , Sriadhi S
Published: May 2020

Academic loads in writing a thesis cause difficulties to students to complete their studies. This problem can be solved with the application of an expert system with early detection of depressive final-year students that compares Certainty Factor method and Dempster-Shafer method. Certainty Factor method used to measure facts certainty or rules in defining the level of expert confidence, while the Dempster-Shafer method combines uncertainty that has characteristics according to the way of thinking of experts but has a mathematical basis. The purpose of comparing these methods is to get the most appropriate and best method for early detection of depression. The methodology used in this study is a comparative test between two methods, with a mechanism (1) Collecting data related to the depression of final year students; (2) Data acquisition and weighting of confidence values; (3) Calculate formulations from both methods; (4) Perform a comparative test to obtain conclusions. Certainty Factor method is the most appropriate and the best model in early detection of depression, because Certainty Factor method revealed that the more symptoms are given, the higher the probability of detection of depression.
Analysis of student satisfaction of UPI SPOT e-learning services in UPI postgraduate Bandung, Indonesia, using the Fuzzy-Servqual Method
Authors: Prayudha A R , Sumarto S , Abdullah A G
Published: May 2020

This article analyzes the level of student satisfaction in using SPOT UPI Bandung e-learning services. Student satisfaction is taken by distributing questionnaires to respondents. This article compares perceptions with students’ expectations in using SPOT UPI Bandung services using fuzzy-servqual. Fuzzy-Servqual method can overcome the subjectivity problem of respondents in providing an assessment to fill out the questionnaire. The sample of this study amounted to 41 people using simple random sampling technique. The results showed that the gap value for postgraduate student satisfaction with SPOT UPI Bandung services was still high at -1.584 with a perception value of 7.695 and an expectation value of 9.277. The main conclusion of this study is that UPI Bandung graduate students who use SPOT e-learning services have not felt satisfaction in using SPOT UPI Bandung e learning services.
Security audit in cloud-based server by using encrypted data AES -256 and SHA-256
Authors: Husni M , Ciptaningtyas H T , Suadi W , Ijtihadie R M , Anggoro R , Salam M F , Arifiani S
Published: May 2020

Cloud service provides access to servers, databases, storage, and any application services over the Internet. Cloud computing allows users to store their data in the servers. This will ease user to access the data everywhere by only using the internet connection from any devices. Cloud service allows users to run application to many mobile users or to support business critical operations. Cloud service also provides rapid access to the flexible and low-cost IT resources. By using the cloud service technology, there is no need to invest a hardware and spent much time to manage that hardware. Although cloud technology has many advantages, there are also some disadvantages such as some security issues. The usage of internet connection gives a high risk in cyber-attacks. Sometimes the cloud service provider also misuses the data stored in the server. This paper proposes the integrity verification of data stored in the server by using Hash function SHA-256 and AES-256. The proposed scheme combines the mechanism of encryption as a strategy to verify the data integrity. This method will encrypt files stored in the servers that aims to ensure the integrity of file stored. This research is expected to help use to secure their data.
Development of geographic information system based on website in the field of education
Authors: Sahiundaleng R P , Widiaty I
Published: May 2020

The purpose of this study is to obtain information on the development of Geographic Information System (GIS) with various methods in GIS, namely ArcView and ARCGIS and Website-based in the world of education that can be accessed anywhere during the internet connection. The technique used in this paper is Study Literature, using examine international and national journals published in 2015 - 2019. The results of this study are information about the use of GIS in the field of education with various benefits and constraints.
The effect of computer-based learning on learning outcome of diesel engine learning
Authors: Barokah B , Kaligis D D , Rompas P T D , Wibisono Y , Wiratno W , Batubara R W
Published: May 2020

Development of the world has been influenced by science and technology and one of those is educational technology. Educational technology is a science which consists of various domains supported by the utilization domain. This research focused on the use of learning media. The purpose of this research is to determine the model of learning media which is relevant to the characteristics of students in diesel engines lesson and to find the influence of multimedia for the learning outcome of the diesel engines learning process. The method used in this research is the experimental method. Tests were carried out in two groups; multimedia = the control group is using conventional learning, the conventional group = the treatment group is learning using multimedia. Data were analyzed using the t-test Two Samples assuming data were normally distributed. The t-test is carried out using the SPSS 15 program for Windows. In learning with multimedia, this shows an increase in learning outcomes. The correlation between the second sample shows a very close relationship between conventional learning and multimedia learning. Because the probability is smaller than specified then Ho is rejected and Ha is accepted. Multimedia learning can improve learning outcomes. This should be true for other lessons.
Improving knowledge about Indonesian culture with augmented reality gamification
Authors: Sudarmilah E , Irsyadi F Y A , Purworini D , Fatmawati A , Haryanti Y , Santoso B , Bakhtiar D N , Ustia N
Published: May 2020

Digital technology cannot be dammed or avoided, moreover, the current generation of children is a native digital generation is those who are born very close to the world of digital technology such as smartphones, laptops, digital applications, internet access, and others. This may affect the attitudes and behaviors of children in both positive and negative impacts. However, we can act wisely, not by alienating or avoiding children from technology but by providing education about technology (digital literacy) and directing video game access to positive video games that are beneficial. The method used in this research is Research and Development with a modified SDLC (Software Development Life Cycle) development model in the development of Augmented Reality (AR) educational games. This study also uses a pre-test-post-test group matching design to analyze the increase of elementary school students’ knowledge in learning about Indonesian culture. The measurement results of student learning outcomes are carried out by giving tests in the form of multiple choice. The statistical analysis used in this study is the validity test and Wilcoxon Signed Rank test. Validity testing shows 93.33% of the questionnaire items are valid. The results of the Wilcoxon Signed Rank test analysis obtained a significant value of 0,00 <0.05, then it was stated that there were differences in the average student learning outcomes for pre-test with posttest (increased). This research concludes that after the use of AR Edugame learning media, it has an influence compared to before learning with the media. This shows there is an increase in student learning outcomes.