Indonesia Conference Directory

Corresponding Author
Rida Hudaya

Institutions
Politeknik Negeri Bandung

Abstract
This paper describes the research results to identify the characteristics of objects using image processing with the method of flat area geometric measurement, color measurements, size measurement, shape characteristics, and texture characteristics as data information used to decide on two groups of objects using the method of the Linear Discriminant Analysis for the application of mangosteen grading and sorting process. The proposed solution method is the use of four image sensors placed at four different monitoring angles. Each image sensor provides a decision on the group of objects it identifies, "accepted" if it meets all the objects requirements or "rejected" if one of the objects characteristics requirements is not met. The results of each image sensors decision are sent to the sink node in the wireless sensor network environment to be decided together using the sensor fusion method whether the objects identified in the group are "accepted" by all image sensors or "rejected" by one or more sensors image. The grouping results give a 10% error rate, and the biggest identification error comes from the color measurement.

Keywords
Image Processing, Linear Discriminant Analysis, Sensor Fusion, Wireless Sensor Networks

Topic
Electrical Engineering

Link: https://ifory.id/abstract/LpDumYVyabRd

Corresponding Author
Tutin Aryanti

Institutions
Universitas Pendidikan Indonesia

Abstract
Indonesian people-s mobility has grown massive during the past three decades. The quantity of various transportation facilities were also grown in some areas to accommodate people-s need. This phenomena has influenced the emerging of new need for certain space that can accommodate, facilitate, and contain people-s fast and massive movements. Adi Sumarmo International Airport in Surakarta is currently developing its facility with an airport train station, which connects the airport complex to Solo-s Balapan Train Station, from which visitors access the city. Employing behavioral approach and transit-oriented development principles, this design project applies the concepts of walkability, inclusivity, and accessibility.

Keywords
transit-oriented development, connectivity, transit, walkability

Topic
Architecture

Link: https://ifory.id/abstract/3yth7bHq2NTD

Corresponding Author
Tutin Aryanti

Institutions
Universitas Pendidikan Indonesia

Abstract
Industrial Revolution 4.0 requires teachers and students to be responsive to technology to support innovative learning processes. One of the ways that can be done is implementing blended learning method. Blended learning method has several advantages through combining the discussion, lecture, question and answer method with online-offline method. This research aims to determine student-s learning outcomes improvement and responses after the implementation of blended learning methods in Software Application and Building Interior Design subject in a vocational high school. This research used a quantitative method in the form of Pre-Experimental Design (Nondesigns) with the type of Pretest-Posttest Design. There were 25 students who were selected purposively as the samples in experimental class. Data analysis is obtained from N-Gain calculation. The analysis results show that the implementation of blended learning shows good psychomotor achievement. Additionally, there is a medium increase in the psychomotor aspect after using the blended learning method in Software Application and Building Interior Design subject. Students gave good responses to blended learning method on Software Application and Building Interior Design subject.

Keywords
blended learning, vocational school, google classroom

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/46YaJPcdMnjX

Corresponding Author
Adi Prakoso

Institutions
Reservoir Geophysics Graduate Program, Physics Dept., FMIPA, Universitas Indonesia

Abstract
Hydrocarbon exploration requires comprehensive understanding of geological and geophysical properties of subsurface reservoir. Therefore, subsurface rock properties determination, which include total and effective porosity, clay content, and water saturation, is a very important, particularly for reservoir target. In term of spatial coverage, subsurface rock properties is then distributed by using seismic multiattribute, which is performed in two approaches – linear multivariate regression and probabilistic neural network (PNN). Linear multivariate regression seismic multiattribute assumes that the relation of seismic attributes and reservoir property is linear, while probabilistic neural network, seismic multiattribute assumes non-linear relationship. This research employed linear multivariate regression using internal attribute of seismic data to predict several rock properties. Transformation of seismic internal attribute to rock properties was attained by a series of weights derived by least-squares minimization. To estimate the reliability of the derived multiattribute transform, cross validation is used where each well is systematically removed from the training set, and the transform is rederived from the remaining wells. The prediction error for the hidden well is then calculated. The validation error, which is the average error for all hidden wells, is used as a measure of the likely prediction error when the transform is applied to the seismic volume. This method was applied to Globigerina Limestone reservoir in Madura Strait that resulted in good prediction of reservoir properties. Result of this research is used for quantification of remaining lead and prospect in the field area. Furthermore, the predicted subsurface rock properties is used as input to optimalize in developing well in the proven fields.

Keywords
geophysics, seismic, multiattribute, rock properties

Topic
Petroleum and Geology

Link: https://ifory.id/abstract/V9exyWYq6BPE

Corresponding Author
Dian Suminar

Institutions
Department of Chemical Engineering, Politeknik Negeri Bandung, Indonesia

Abstract
Accumulation Oil Palm Empty Bunches (TKKS) cause environmental problems if not solved. TKKS has a high cellulose composition, so it can be used as nanocellulose which has a high use value. The process of making nanocellulose from TKKS through the isolation stage of α-cellulose with a delignification process using Sodium Hydroxide (NaOH) 17.5% (b / v) at 80oC, bleaching using Hydrogen Peroxide (H2O2) 10% (v / v), hydrolysis using sulfuric acid and drying using freeze drying at a heating temperature of 53oC for 7 hours. Cellulose yield produced from the isolation process of α-cellulose from TKKS was 20.8%. The results of this drying process will reduce the aggregation of particles in the nanocellulose produced, so that nanocellulose is produced at 160-298 nm

Keywords
nanocellulose, hydrolysis, freeze drying.

Topic
Chemical Engineering

Link: https://ifory.id/abstract/BT3FwEzDbeaL

Corresponding Author
Mutaufiq Mutaufiq

Institutions
a) Departemen Pendidikan Teknik Mesin, Universitas Pendidikan Indonesia
Jl. Setiabudhi No.229 Bandung, Indonesia
*taufiq_top[at]upi.edu

Abstract
A household refrigerator was machine that operates continuously throughout the day to kept food fresh. So that a little savings in electricity consumption was very beneficial. The purpose of this study was to obtain savings in refrigerator electricity consumption by replacing R-134a working fluid with Musicool-22 natural refrigerant. Furthermore, to reducing global warming potential of the earths surface due to HFCs refrigerants. The study was designed experimentally with the retrofit refrigerant drop in substitute method on refrigerator practicum tools. The test begins by measuring the performance of refrigerators using R-134a working fluid. Then the working fluid R-134a is retrofitted with MC-22 with a mass of 15%, 20%, 25%, 35%, and 45% of the mass of R-134a. Finally, the performance of the refrigerator that has been retrofitted using the MC-22 was measured as a measurement of the performance of refrigerator using the R-134a. The test results show that, when the refrigerator is retrofitted using MC-22 with a mass of refrigerant 25% mass of R-134a refrigerant, the performance of the refrigerator increases. Electricity consumption is more efficient with a marked decrease in electrical power requirements to 12.2%. In addition, the freezer room temperature is lower at 6.9 0C compared to when operating with R-134a working fluid.

Keywords
Electricity consumption, drop in substituted method, refrigerant, refrigerator, retrofit

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/xfwAQaHjMuT4

Corresponding Author
Indriasari Ramli

Institutions
(a) Technology and Vocational Education, Universitas Pendidikan Indonesia (UPI) Jl. Dr. Setiabudhi 229, Isola, Kota Bandung 40154 Indonesia *indriasariramli[at]upi.edu
(b) Lecturer of Technology and Vocational Education Universitas Pendidikan Indonesia (UPI) Jl. Dr. Setiabudhi 229, Isola, Kota Bandung 40154 Indonesia

Abstract
Teaching techniques conceptually effective and structured will produce teaching skills and as the most important means of change that must be possessed by a teacher. The purpose of this study was to determine the types of teaching styles used by teachers during the learning process of electricity system, what obstacles were encountered by teachers when applying certain teaching styles in the learning process and to determine students responses to the teachers teaching style. This qualitative descriptive study is a type of survey research.The method of observation, interview, and documentation. After conducting research on the teaching style of vocational teachers it can be concluded that the teaching style applied by vocational teachers in Vocational High Schools in Bandung is classical teaching style. Practicum learning activities in the field, the teacher applies a technological teaching style only related to the use of media or teaching aids in learning activities, other aspects of the technological teaching style are not visible in the learning activities. From this research it can be suggested that the teacher should strive to change teaching techniques by involving students in every aspect of learning so that students will be trained to be active in learning activities.

Keywords
Teaching Style, Vocational Teachers, Vocational High Schools

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/nChwTybevEtK

Corresponding Author
Tarlani Tarlani

Institutions
Bandung Islamic University

Abstract
Modernity and economic-rational thinking become part of urban society progress where it is gradually transmitted to rural life. This is a great challenge to maintain the local heritage of rural cultural values. Especially, encouraging young people to understand and maintain local wisdom will be more important for sustainable development planning in rural settlements. Jatitiluwih Village is one of the models of eco-tourism in Bali which is facing a challenge between maintaining the values of local wisdom (cultural heritage) or fulfilling the demand for tourist facilities. In this case, Tri Hita Karana as the philosophy of Balinese life does not only support for daily activities but also needs to be supported by other organizations both national government and even international institution. Research method using the inductive approach with qualitative analysis from literature and secondary data. Jatiluwih Village has received an award as cultural heritage from UNESCO, where the support will increasingly disappear if the preserving ideas for village development are not good. Sustainable Village Planning is harmony prosses between modernity in tourism activities by maintaining the values of local wisdom in the arrangement of rural settlements in Bali.

Keywords
eco-tourism, cultural heritage, local wisdom, sustainable village

Topic
Environmental Engineering

Link: https://ifory.id/abstract/rcBKFHY7hzEf

Corresponding Author
Azmi Meilanie Fathurrohman

Institutions
Department of Civil Engineering, Politeknik Negeri Bandung, Bandung 40012, Indonesia

Abstract
Clay shale is a type of clay that is easy to expand when it comes into contact with water because of the montmorillonite mineral it contains. The effect of water also causes a decrease in strength in the clay shale. As a result of the clay shale behavior, some buildings become damaged or landslides occur on the slope. The soil stabilization method with a cement binder is one solution to improve the detrimental properties of the clay shale. The selected cement content variations are 20, 30, and 40%. Cement Water Factor 35% for all variations. Laboratory testing is carried out at 0, 7, 14, and 21 days. Tests carried out in the form of specific gravity, swelling, atterberg limits, unconfined compressive, cation exchange capacity, X-Ray Difraction (XRD), and Scanning Electron Mycroscope (SEM). Tests show that the most optimum mixture is 30% clay shale-cement (CS-C30). CS-C30 produces changes in clay shale parameters including an increase in compressive strength without any decrease, and a reduction in the expansive nature as indicated by the decrease in the value of swelling pressure, and cation exchange capacity. Changes in these parameters are suspected because it already does not contain montmorillonite in CS-C30 based on XRD.

Keywords
clay shale, expansive, cement, soil stabilization, binder

Topic
Civil Engineering

Link: https://ifory.id/abstract/M48JpmvXrGKf

Corresponding Author
Fauzi Abdilah

Institutions
a) Department of Chemical Engineering, Politeknik Negeri Bandung, Jalan Gegerkalong Hilir Ds Ciwaruga, Bandung 40012, Indonesia
b) Department of Chemical Engineering, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung 40132, Indonesia

Abstract
Microbial fuel cell (MFC) is a promising technology that can be used to directly convert organic matter into electrical energy with the aid of microorganisms. This experiment studied the electricity-generating potency of a double chamber MFC using palm oil mill effluent (POME) as substrate and mixed culture originating from cow manure as inoculum. A non-catalyst graphite sheet was used as the electrode with a proton exchange membrane as the separator. In this work, we report that mixed culture bacteria from cow manure can be used as potential inoculum for microbial fuel cell generating maximum open circuit voltage, power density and current density of 853 mV, 655.98 mW/m2 and 1387.09 mA/m2, respectively. Electrochemical impedance spectroscopy (EIS) was done to investigate the electrochemical activities in the MFC. The biofilm formation on the anode surface was visualized using scanning electron microscopy (SEM).

Keywords
microbial fuel cell, palm oil mill effluent, cow manure, inoculum, graphite sheet

Topic
Chemical Engineering

Link: https://ifory.id/abstract/Er9dj32ptG6N

Corresponding Author
Ghusrina Prihandini

Institutions
Politeknik Negeri Bandung

Abstract
Biodiesel is one of the most promising renewable alternative fuels. Subcritical water is a 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 gas as co-solvent and N2.This study investigates the influence of operation condition to obtain biodiesel 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 40 bar to carried out the reaction under subcritical condition. The best condition 30/10 methanol-water (v/v), t= 7 h, T = 200 0C,CO2 as co-solvent were highest yield oil obtained 18% with oleic acid methyl ester as the major identified biodiesel

Keywords
biodiesel, rice bran, subcritical methanol, subcritical water

Topic
Chemical Engineering

Link: https://ifory.id/abstract/EHmyKWfGkVqp

Corresponding Author
Ernawati Hendrakusumah

Institutions
1,2) Lecturer in Urban and Regional Department, Faculty of Engineering, Unisba
3) Student in Urban and Regional Planning, Unisba Postgraduate Program

Abstract
ABSTRACT The purpose of this study was to identify post-mining land use practices in Cibeureum Village, Cimalaka District, Sumedang Regency, West Java Province. This area is rich in mining natural resources, especially the C-quarry mine. Even though various regulations regarding mining land exploitation are available, in reality there have been many neglections of these lands after mining. However, it is different from what happened in the village of Cibeureum, the land at the foot of Mount Tampomas, in which there are deposits of sand and rock mining, post-mining can still be used for agricultural activities by the land reclamation method conducted by the local community. This paper will describe how local communities have a concern in utilizing post-mining land through the reclamation method? What factors drive local people to want to use post-mining land? The analysis was carried out through participatory observation methods, focus group discussions, and in-depth interviews with relevant stakeholders. The results showed that the main thing underlying it was the existence of a collective awareness of the community to be able to live as a form of pious charity because of Allah SWT.

Keywords
Collective awareness in land reclamation

Topic
Environmental Engineering

Link: https://ifory.id/abstract/zeDTwXtPmFaC

Corresponding Author
Feren Dila Aviska

Institutions
Agroindustry Technology Study Program,
Faculty of Technology and Vocational Education, Universitas Pendidikan Indonesia

Abstract
SMK graduates are required to master the competency of specific expertise and entrepreneurship programs both to meet the demands as a workforce, and to attend higher education in accordance with their vocational skill. The demands as a workforce, and the requirements for higher education will prioritize graduates who have good soft skills. Soft skills can be developed through learning activities in the classroom and cannot be separated from the role of a teacher, it takes a learning model that builds knowledge and improves these abilities. The project-based learning model is a learning model based on constructivism that supports student involvement in problem solving situations by working on a project. The purpose of this study is to determine students abilities in solving problems, managing information, leadership skills, team work, and communication. Respondents in this study were class XI-K APHP Tanjungsari Vocational School 2018/2019 with a total of 31 people. The type of this research is classroom action research (CAR) which consists of 3 cycles which carried out in four stages of each cycle. Data collection in this study was carried out through observation and questionnaires. The results of observations and student questionnaires were 79.35% and 72.87% respectively and categorized as good

Keywords
PJBL, Teamwork

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/F6uyMgCPLHKx

Corresponding Author
Ahmad Fauzan

Institutions
a)Chemical Engineering Politeknik Negeri Bandung
*ahmad.fauzan[at]polban.ac.id

Abstract
The population in Bandung continues to increase and its growth results in increasing necessities of plant products. Meanwhile, field availability is decreasing so a certain process of intensification in agriculture is needed. One of the ways of doing it is by creating plant bioreactors. The purpose of this study was to obtain the effect of composition and size variation of the bed on the parameters of hold up liquid to improve plant production. Fluid flowing is based on the concept of hold up liquid from a bed with medium consisting of compost and sand with various sizes (not sifted; 4 - 2 mm; 2 - 1 mm; 1 mm - 500 μm; 500 - 250 μm and 250-125 µm) and composition variations (100: 0; 25:75; 50:50; 75:25 and 0: 100) from compost and sand. The results showed that the bed consisting of sand and compost with a ratio of 25:75 with a diameter of 500 - 250 μm as a good composition in increasing the hold up liquid value of a bed with 0.75 hold up.

Keywords
Plant bioreactors, bed variation,capillarity

Topic
Chemical Engineering

Link: https://ifory.id/abstract/bdh3GnEgcUKR

Corresponding Author
david yavis

Institutions
Post-Gradute Studies School, Universitas Pendidikan Indonesia, No. 207, Dr. Setiabudhi Street, Bandung 40154, Indonesia
davidyavis[at]upi.edu
davidalocafpasha[at]yahoo.co.id

Abstract
Remote sensing was introduced to the vocational School of Geomatics Engineering in 2013. Remote sensing is a science and technology related to the search of information about an object without touching the object directly . The purpose of this paper is to review the research related to remote sensing in the last 5 years. The Search results indicate that the scope of a remote sensing topic includes (1) Environmental monitoring such as mapping mangrove forest carbon reserves, detection and monitoring of oil spill-affected vegetation (2) interpretation of closure and change of land for Paddy field modeling, road detection and settlement quality (3) Mitigation and monitoring of natural disasters; Hotspots in the estimation of forest fires and floods (4) identification of natural resources; Copper (5) identification of plants; Determining species type, identification of agricultural crops etc. Images used are images of Landsat, AQUA/TERRA, and others. The constraints in this study are data storage that has a large volume. By reviewing the aspects examined were obtained a cheaper and more efficient way of improving the quality of the object. The conclusion of the search results is that this review will be able to enrich the science of knowledge at the remote sensing technology in Geomatics Engineering, especially related to learning content enrichment.

Keywords
Remote Sensing, Penginderaan Jauh, Geomatics Science

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/CBJLQywcM7VA

Corresponding Author
Dzaky Satria Rahman Djuanda

Institutions
Faculty of Electrical Engineering, Telkom University
Jl. Telekomunikasi Jl. Terusan Buah Batu No.01, Sukapura, Kec. Dayeuhkolot, Kota Bandung, Jawa Barat 40257, Indonesia

Abstract
A smartphone needs a battery source to work well. During the battery charging process, the state of charge can be increased by up to 100%. One habit in charging batteries is to leave the smartphone connected to the charger all night long. Batteries that are already 100% but still connected to the charger will continue to receive an electric current even though a small value can cause a decrease in battery life and durability. This final project aims to create an automatic battery charging system based on the Android operating system. The result of this system is when the percentage limit that we have set is the same as the percentage of the battery on the smartphone, the system will automatically cut off the incoming current so that the charging process will stop. This system is designed using a microcontroller, Bluetooth module, relay module, Android apps, and smartphone with Android operating system. The tests carried out are the suitability of the apps with the smartphone, the charging and discharging conditions on the system, and automatic battery charging. From the results of tests conducted by the system can cut the current to a value of 0 amperes from the charger manually and automatically controlled through the apps, the apps can be used on smartphones that have Android version 2.1 or higher.

Keywords
Smartphone, State of Charge, Android

Topic
Electrical Engineering

Link: https://ifory.id/abstract/AFtZvVrx9K63

Corresponding Author
Imam Indratno

Institutions
*) Departement of Urban and Regional Planning, Bandung Islamic University, Bandung 40132, Indonesia
imam[at]unisba.ac.id

Abstract
Tanjungpinang City is known as a city and tourism because of its rich historical and cultural potential. However, community in Tanjungpinang City feel that the values of ecosystem services, especially cultural and spiritual ones, have been lost. Based on previous research, cultural and spiritual ecosystem services have never been done by center of ecoregion development control. It means there were two new ecosystem service maps to produce after 18 maps of ecosystem services had been made on a smaller scale (map scale of 1: 50,000 for each island). The research methodology used was the DELPHI method. The research aims to make cultural and spiritual ecosystem services in Tanjungpinang City and to develop cultural and spiritual ecosystem services for cultural tourism areas in Tanjungpinang City. The results of the study on cultural ecosystem services was the indication on service of high category (22.2%), moderate (44.4%), and low (38.8%), while study on the spiritual ecosystem services resulted the indication of high category (22.2%), moderate (55.5%), and low (27.7%).

Keywords
cultural ecosystem services, spiritual ecosystem services, cultural tourism

Topic
Architecture

Link: https://ifory.id/abstract/B2RwYTzqtG3P

Corresponding Author
Sri Dewi

Institutions
a,b,c) Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok, Jawa Barat 16424, Indonesia
a*) sridewi.semesta[at]gmail.com
b*) yusuflatief73[at]gmail.com
c*) rossyarmyn[at]gmail.com

Abstract
Proper maintenance for a government green building may extend the the building lifetime and prevent damage of the building components, one of them is the electrical component. Damage to electrical components in the building may have fatal consequences such as short circuit or fire. This research aims to improve the maintenance performance of government green building for electrical components, in order to meet the building reliability requirements which, consist of safety, health, comfort, and convenience. Maintenance systems including work breakdown structure (WBS), standard operationel procedure (SOP) and guidelines for building maintenance which integrated with information systems and Building Information Modelling (BIM) are influential factors for building maintenance performance. The research methods used are archival analysis, case study, survey, and expert judgement. The research result in the form of the development of a BIM-based building maintenance information system that is expected to improve the maintenance performance of government green building for electrical components would become more effective and efficient.

Keywords
Building Information Modelling; Electrical Components; Green Building; Information System; Maintenance

Topic
Civil Engineering

Link: https://ifory.id/abstract/gy2tdZaXwYWm

Corresponding Author
Gloria Agustina Haolina

Institutions
a,b,c) Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok, Jawa Barat 16424, Indonesia
a*) gloriaagustina2[at]gmail.com
b*) yusuflatief73[at]gmail.com
c*) rossyarmyn[at]gmail.com

Abstract
The aim of building maintenance is to preserve the function, structure, and aesthetics of the building in accordance with the initial conditions. An ineffective building maintenance management leads to increased operation and maintenance cost, reduced building reliability, and failure to achieve the green building mission. One problem highlighted in this study is that building management are still using call-center system with no database to store building damage data, thus building failures are not detected in time. As a result landscape and housekeeping components are damaged below the allowable standard and become no longer functional. The purpose of this study is to improve the maintenance performance on landscape and housekeeping components of government green buildings. The case study studied was the Ministry of Public Works and People-s Housing Republic of Indonesia. The research methods used are literature reviews, surveys, case studies, and expert judgement for validation content and construct. This study uses a Work Breakdown Structure (WBS) in managing data dynamically using Building Information Modelling (BIM), integrated with web-based information systems. The result is that using BIM-based website leads to a more effective and efficient maintenance work of green buildings, thus improving the maintenance performance on landscape and housekeeping components.

Keywords
Building Information Modelling, Green Building, Information System, Maintenance, Landscape and Housekeeping Components

Topic
Civil Engineering

Link: https://ifory.id/abstract/CKdkHtjbTJLG

Corresponding Author
Aceng Gima Sugiama

Institutions
Politeknik Negeri Bandung (Polban)

Abstract
The customer of online tickets continues to increase including for the millennial segment in Indonesia, but how the causality of electronic service quality, perceived value, and loyalty intention variables on online ticket customers. The aim of this research is to examine the causality of electronic service quality, perceived value and loyalty intention on ticket online customer service. The research theory of this study is the use of E-S-QUAL (Electronic-Service Quality). This descriptive research utilizes the ticket online service in Indonesia as a case, with the e-commerce user population for online shop ticket services in Indonesia, a sample size of 514 respondents, and data were analyzed using the regression model. The results show that online ticket customers consider that the higher level of electronic service quality (efficiency, fulfillment, system availability, and privacy) can increase the perceived value of the customer concerned. Better customer perception of perceived value will increase the customers loyalty intention. In addition, the higher the quality of electronic sales services, can increase customer loyalty of online ticket shops.

Keywords
E-S-QUAL (Electronic-Service Quality), perceived value, loyalty intention

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/C6VmYk9uxbqa

Corresponding Author
Ai Mahmudatussaadah

Institutions
Universitas Pendidikan Indonesia

Abstract
Abstract. Diversification of food processing based on Local Resources continues to be sustainable. Sweet potato is one of the local food commodities with quite high productivity but its utilization is still limited. Noodles can be said to be the 2nd staple food after rice. Noodles are generally made from flour. Purple sweet potato is very potential to be used as a substitute material in making noodles, because the carbohydrate, fiber, and antioxidant content are quite high. The purpose of this research was to develop wet noodle products with substitute purple sweet potato flour with a concentration of 20%, 30% and 40% and purple sweet potato puree with concentrations of 40%, 50%, and 60%. The method used in this research is experimental research complete random design 2 repetitions. The results showed that the best formulation of purple sweet potato flour substitution was 20% concentration with preference level more than 62%. The best formulation of puree purple sweet potato substitution was 50% concentration with product preference level more than 82%. So it can be concluded that the fresh noodles with puree of purple sweet potato substitution were more acceptable than substitution with flour of purple sweet potato.

Keywords
fresh noodle, Ipomoea batatas L, purple sweet potato

Topic
Basic Science in Engineering Education

Link: https://ifory.id/abstract/JkbecqpYUNh3

Corresponding Author
Krisnhadi Bima

Institutions
Universitas Telkom

Abstract
Internet of Things (IoT) is a paradigm for connecting any devices onto internet. The IoT applications can be implemented in IoT, for example, e-health, smart logistics, smart transportations, and smart homes. In smart logistics, objects and deliveries location need to be updated in real time, so they can be tracked easily. Asset tracking employs Global Positioning System (GPS) and commonly General Packet Radio Service (GPRS) connections to send telemetry data to database server. Narrowband-IoT (NB-IoT), a new cellular standard that is optimized for Low Power Wide Area Network (LPWAN) applications, such as asset tracking. Compared to GPRS, it has smaller uplink transmit power and has decent uplink speed. In this paper, NB-IoT was utilized for asset tracking. The performance of NB-IoT was compared to GPRS, specially for these parameters: latency, throughput, packet loss, and power usage. The result obtained shows that, NB-IoT has average latency around 1.4 seconds, with packet loss (UDP) 44% compared to GPRS 68%. NB-IoT has better power consumption during data transmission against GPRS (0.405 W vs 0.737 W) even though both of them have similar uplink throughput (around 350 B/s). From this test result, this new cellular standard is appropriate in Asset Tracking application.

Keywords
Internet of Things (IoT), General Packet Radio Service (GPRS), Narrowband-IoT (NB-IoT), smart logistic, asset tracking

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/ZY8bQMvLatfK

Corresponding Author

Institutions
Politeknik Negeri Bandung

Abstract
Inventory of GIS Web Applications for Environmental Roads, Drainage, and Septic Tanks is an information system built to support spatial requirements, where these applications are built to address the problem of investing spatial data in environmental roads, drainage, and septic tanks. In developing a web-based GIS application, it usually uses the methodology namely waterfall, but in this study, the application implementation uses the Y-Model Webgis Development(YWDM) which is a combination of web engineering and the context of GIS itself. This paper introduces an implementation to create an application by using Y-Model Web Geographic Information Systems (GIS) with a study case on inventorying spatial requirements on roads, drainage, and septic tanks.This methodology was implemented to create an application which needs a map visualization for city planning and development By using the YWDM methodology, the needs and accuracy of application development can be done, using several tools. The data process uses ArcGIS ESRI and PHP and JavaScript programming languages to visualize the results. The results show that application development is built more easily because requirements can be well defined because a collection of requirements from the context of software development and spatial specifications are met and the application is completed. When creating a GIS web application, some methodologies can be used besides waterfalls or ordinary SDLCs, because spatial requirements are not well defined. With the implementation of this methodology, it is proven that the development of GIS web applications can be easier, defined and by the needs desired by the user

Keywords
Spatial Data, Y-Model Webgis Development, GIS, Waterfall,

Topic
Computers, Internet, Multimedia in Engineering Education

Link: https://ifory.id/abstract/xpwycMKahvtX

Corresponding Author
Sinta Setyaningrum

Institutions
Department of Chemical Engineering, Politeknik Negeri Bandung
Jalan Gegerkalong Hilir, Ds. Ciwaruga, Bandung 40012
*sinta.setyaningrum[at]polban.ac.id

Abstract
Anaerobic digestion is a biogas production process that can be used as a sustainable alternative energy. Anaerobic digestion utilized vary type of organic waste as substrate for reaction process. Conversion process of organic wastes into the energy could solved the environmental problems. Food waste is one of the high organic content waste which become global environmental issue. In this research, dry anaerobic digestion system used to determined biogas production potential from food waste with cow manure as the inoculum. Three variation total solid (TS) of substrate and inoculum were used to compare the biogas production performance. After 24 days incubation time on 25°C, result of biogas production from 1:1, 2:1, and 1:2 ratio of food waste and cow manure were 144 mL/gr TS, 73.46 mL/gr TS, and 110.27 mL/gr TS respectively. Based on those result, food waste and cow manure ratio 1:1 TS suggest to be used on improved dry anaerobic digestion system.

Keywords
biogas; dry anaerobic digestion; food waste; cow manure

Topic
Chemical Engineering

Link: https://ifory.id/abstract/m2XJ8jELxbRt

Corresponding Author
Endang Prasetyaningsih

Institutions
(1)Industrial Engineering Program Study, Universitas Islam Bandung
Bandung, Indonesia

*endangpras[at]gmail.com

Abstract
This paper discusses about a company that adopts make-to-order strategy because the company does not have enough fund to provide raw material. The raw material is ordered when the customer order has been received. It occurs a very long customer lead time. due to the production process must wait for the arrival of material. Consequently, the company can not meet the customer order according to the due date, and the company should give a discount of 25 - 30% of the total purchases. This research aim to propose an alternative solution to solve the problem. The customer lead time is reduced by determining a decoupling point, which is placed between the procurement of raw materials and the manufacturing process. The decoupling point denotes a boundary between the make-to-stock strategy in the previous process, and the make-to-order strategy for the process afterwards. The lead time customer, is then considered start from the decoupling point to the due date.

Keywords
MTS/MTO strategy, decoupling point, limited fund

Topic
Industrial Engineering

Link: https://ifory.id/abstract/cJj2F7vWH9qg

Corresponding Author
Hanny Noviyanti

Institutions
Educational of Fashion Design Study Programme, Home Economics Department, Universitas Pendidikan Indonesia.
Educational of Information Technology, Informatics Department, Universitas Negeri Surabaya, Indonesia.

Abstract
The bleaching batik inverse cap technique is a new innovation by replacing the coloring process on the batik cap with the bleaching technique so that it produces batik that has its own aesthetic value and uniqueness. The stamping technique in this study is the inverse cap technique. Based on the manufacturing of batik, the bleaching technique starts from determining the batik motif, the process of seizing/composing the canting cap motif, and the bleaching process. The method used in this research is the Research and Development method, including: (1) the analysis phase, (2) the planning stage, (3) the production phase, (4) the validation stage, (5) the revision stage, (6) the assessment stage. The results of the validation from the material experts obtained a percentage of 97.1% that interactive learning multimedia is considered very appropriate to be used as a medium of learning in reverse batik bleaching techniques as decoration applications on the bag. Validation from multimedia experts obtained a percentage of 98.6% that multimedia interactive learning is considered very suitable to be used as a learning medium. The results of a limited trial of the user obtained a percentage of 93.8% considered to be very appropriate to be used to support the learning process of reverse stamped batik bleaching techniques as decoration applications on bags.

Keywords
Multimedia Video Tutorial, Batik Inverse Cap Bleaching Technique, Application Decoration, bag

Topic
Computers, Internet, Multimedia in Engineering Education

Link: https://ifory.id/abstract/kdHAFQNRfa42

Corresponding Author
Muhammad Fakhrudin

Institutions
a) School of Electrical Engineering, Telkom University
Jalan Telekomunikasi 1, Bandung 40257, Indonesia
*fakhrudin110894[at]gmail.com
** rizkia[at]telkomuniversity.ac.id
b) Diploma of Telecommunication, School of Applied Science, Telkom University
Jalan Telekomunikasi 1, Bandung 40257, Indonesia
*Denny.Darlis[at]telkomuniversity.ac.id
*DennyD[at]telkomuniversity.ac.id

Abstract
The advancements in warehouse robotics at this current moment is considered as a trending topic. There is an abundance of multinational electronic companies that requires the use of robots in the field, especially warehouse robots that can be used to send and receive items efficiently. The width of warehouses with many branching routes creates problems for the movements of these robots. An example of said problem would be the inability to move efficiently using the nearest route possible. Therein lies the need for an algorithm that may solve these issues. This research proves that the use of A* Algorithm can be implemented for warehouse robot tracks which involves the usage of visible light communication method. The routes used for experimentation have specialized schematics in the form of a grid. In these experiments using a track with 2x2 and 3x3 schematics presents a success ratio of about 56,6% to 66,6% with an estimate distance calculation error between a minimum of 1 cm and maximum of 20 cm. With the implementation of A* Search Algorithm, the robot could determine the shortest route in which it could efficiently move less steps compared to robots which uses all possibilities that exists and handle obstacles.

Keywords
Shortest Route, Warehouse Robots, A* Algorithm

Topic
Electrical Engineering

Link: https://ifory.id/abstract/rcm3yFG2P9LN

Corresponding Author
Yustisia Sekar Pratiwi

Institutions
a,b,c)Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, University of Indonesia, Depok, Jawa Barat 16424, Indonesia

a*)yusti.sekar[at]gmail.com
b*)yusuflatief73[at]gmail.com
c*)rossyarmyn[at]gmail.com

Abstract
Comfort is one indicator in the performance of building maintenance. This performance can be achieved by carrying out maintenance work on the building architecture components. The maintenance of government green buildings in Indonesia has not been done in an optimum manner due to constraints in maintenance work to government green buildings such as non-digitized data, poorly documented data, substandard maintenance work, and poor or slow identification of damages. Impacts resulted from the poorly maintained building are the increasing operational cost and ineffective maintenance work done to the building. The aim of this study is to increase the comfort of maintenance performance of the architectural component of government green building, especially the wall work package. The case study taken is the Ministry of Public Works and Public Housing Building which is considered as a representation of government green building in Indonesia. The method used are literature research, case study, and survey. The result of this research is the information system development using Building Information Modelling (BIM) integrated into building maintenance systems such as Work Breakdown Structure (WBS), SOP, and building maintenance guidelines for architectural components.

Keywords
Architectural Components, Convenience, Building Information Modelling, Green Building, Information System, Maintenance, Wall Work Package.

Topic
Civil Engineering

Link: https://ifory.id/abstract/QxNvFXeMrg8u

Corresponding Author
Juliana Juliana

Institutions
a,c) Aquaculture, FPIK Faculty of Fisheries and Marine Science
State University of Gorontalo

b) Management of Aquatic Resources, Faculty of Fisheries and Marine Science
State University of Gorontalo

Abstract
ABSTRACT Disease in aquaculture activities is one of the problems that often causes losses for farmers. Bacteria are one of the causes that can cause disease and even death in freshwater fish. Bacteria that often infect freshwater fish, especially carp are Aeromonas sp. These bacteria can cause disease and can even cause death in carp seeds. Disease control in freshwater fish aquaculture activities can be done by administering antibacterial both derived from synthetic chemicals and natural materials derived from plants. Binahong is one of the plants that contains flavonoid compounds that function as anti-bacteria. This study aims to determine the effect of soaking binahong (Anredera Cordifolia) leaf extract with different doses on carp seeds infected with Aeromonas sp. The research method is an experimental method consisting of four treatments with three replications. Test animals used were carp measuring ± 5 cm and were infected with Aeromonas sp. Goldfish seeds infected with Aeromonas sp were soaked in binahong extract solution with different dosages, namely A: 0.7g / l, B: 0.9g / l, C: 1.1g / l and D: control. Soaking is carried out for thirty minutes and after soaking the fish seeds are maintained using an aquarium with a density of 1 fish / l. The results showed that immersion of binahong leaf extract with different dosages affected the prevalence rate of Aeromonas that infects goldfish seeds.

Keywords
Aeromonas, Binahong, Carp, Disease.

Topic
Animal Nutrition, Animal Production, and Veterinary Science

Link: https://ifory.id/abstract/cEXghPFnuKQv

Corresponding Author
Rahman Dwi Wahyudi

Institutions
Department of Industrial Engineering, University of Surabaya, Jalan Raya Kali Rungkut Surabaya

Abstract
Every learning activity should be well designed so that it can be easily understood and can attract the attention. However, challenges will arise for quantitative courses such as quality engineering (QE). The QE course is quantitative course aimed for engineering system to produce qualified product. This paper will discuss about role playing as learning method for quality engineering courses. Role playing is designed by considering students as a part of Research and Development (R&D) department from food company trying to improve quality of products. Role playing is fully conducted for one semester with integrated activities consisting of teaching, R&D Meeting, market survey, experimentation and presentation. To build atmosphere, the course-s materials are delivered like training. Pudding experiment was chosen to help students to understand types of DoE particulary. In addition, student get the role of R&D such as leaders, surveyors to conduct market research, analysts to determine Critical to Quality which is worth to be controlled. Thus, learning process is conducted with experiential learning method. By using this method, the central tedencies of mark are 77,5 for mean, 78 for median and 84 for mode. Thus, we can draw that students can easily achieve Learning Outcomes in a fascinating way.

Keywords
experential learning, role playing for quality engineering, engineering education

Topic
Research and Development in Engineering Education

Link: https://ifory.id/abstract/y7j29FgfGMQN