Indonesia Conference Directory

Corresponding Author
Amelia Hayati

Institutions
School of Architecture, Planning and Policy Development,
Institute Technology Bandung

Abstract
The Millennial Situation and Condition are now changing the lifestyles of the urban societies, especially for women. It is also changing their travel behavior to do their daily activities to meet their family needs. Including in The Great Metropolitan Bandung Area, the urban women have high demand for their daily journey and tend to increase. By the theme of Gender Mainstream philosophy, urban women have the freedom to get their accessibility of going anywhere with their own transportation modes, including non-working urban women or as housewives in the region of Bandung. As WRI (2015) said that was more than 50% of womens mobility have a complex daily trip to meet their needs by doing their daily activities. It was done to meet the needs of family and home care in the terms of rising familys welfare. While less than 60% of mens travel behavior have a simple trip. This kind of condition is very interesting to be analyzed, especially in The Great Metropolitan Bandung Area. This study explains how complex the daily travel behavior of non-working urban women and as housewives with activities based approach that were done outdoor in a week. The quantitative data that is performed by socioeconomic and household demographic variables serve as the basis to measure the independent variables affecting family welfare, as well as the type, time, and duration of each daily activities and daily traveling data of non-working urban women. Using Clustering Methods approach to describe the width of research area, we could find the differences of models by Regression Analysis. So, we have 3 kinds of Regression Models to figure out the each of cluster from 3 Clusters that we find by Clustering Method in The Great Metropolitan Bandung Area. The result of this study could be used to make a change of city transportation policy and also to analyze the economic potential area by the models for the government officers and the business owner to increase their profit. By the regression models result, It could be used to estimate many variables in the future to increase the economic growth of the City from the transportation by users perspective.

Keywords
travel behavior, daily activities, accessibility, Clustering Method, The Great Metropolitan Bandung.

Topic
Civil Engineering

Link: https://ifory.id/abstract/vqMK2Xy3kRGN

Corresponding Author
Ade Andri Hendriadi

Institutions
a) PTK Universitas Pendidikan Indonesia
b) Faculty Of Computer Science, Singaperbangsa University

Abstract
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 android 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. In the development of fintech management which is devoted to assisting in the management of TVET finances, it is necessary to manage rules in accordance with financial management policies in TVET education.

Keywords
Financial Technology, Fintech, TVET

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/8qpdreDQ42kH

Corresponding Author
Tri Rijanto

Institutions
Surabaya State University

Abstract
This study is aimed to obtain measurement reliability among vocational learners assessors in industrial practice activities. The study was conducted in Indomobil Nissan Datsun workshop. There were 32 participants from various vocational schools in East Java, both public and private. Assessors consists of two people, namely the mechanic chief (foreman). The performance attributes assessed are 10,000 km periodic maintenance which includes safety first, preparation for service, and periodical maintenance service. Periodical maintenance services include (1) interior inspection, (2) exterior inspection, (3) engine room inspection, (4) suspension and wheel inspection, (5) inspection of the vehicles underside, and (6) final inspection. The results showed that the inter-assessors reliability was equal, rxy = 0,99. It means that the attribute scores obtained from the two assessors have the relatively similar position to the observed attributes.

Keywords
reliability inter-assessors, industrial practice activities

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/KXwU4ZJxDRLb

Corresponding Author
Rizkyana Fathoni

Institutions
Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok, Jawa Barat 16424, Indonesia

Abstract
Buildings suffer deterioration and function failures during its lifecycle even for landscape and housekeeping components in government buildings. Maintenance includes cleaning, inspecting, repairing, and replacing can provide buildings to maximize the utilities of the building-s lifecycle. Corrective maintenance is the most used maintenance method in Indonesia although there are more than just corrective. Other method that is commonly used is preventive maintenance or an activity to prevent any occurrences of building failures without repairing nor replacing any components throughout its lifecycle. Work breakdown structure (WBS) is an effective method to define preventive maintenance activities. However, in Indonesia there is still lack of preventive maintenance based on WBS activities guidebook and preventive maintenance policies. Therefore, the purpose of this study is to develop a guidebook of preventive maintenance landscape and housekeeping activities based on WBS to improve maintenance performance. Method of the research is activities defined from policies, literature studies, and case studies drawn into WBS and validated by maintenance expertise. Experts validate the preventive maintenance activities using questionnaires and provide any maintenance performance improvements after using the guidebook. Result of the research is that landscape and housekeeping preventive maintenance activities guidebook based on WBS improve government buildings maintenance performance.

Keywords
landscape; housekeeping; guidebook; preventive maintenance; work breakdown structure

Topic
Civil Engineering

Link: https://ifory.id/abstract/TbxCXUK8qPV7

Corresponding Author
Heriyanto Heriyanto

Institutions
Politeknik Negeri Bandung
Jl. Gegerkalong Hilir, Ciwaruga, Bandung 40551, Indonesia
* heriyanto[at]polban.ac.id

Abstract
Turmeric is one of the plants that contains antioxidant compounds called curcumin. Antioxidants in curcumin include flavonoids and tannins. Antioxidants can be used as corrosion inhibitors and paint additives. This study aims to utilize turmeric extract as an inhibitor and additive coating agent for aluminum metal in the seawater environment. Turmeric is extracted using a methanol or acetone solvent with a sample: solvent ratio of 1: 8. Phytochemical and DPPH (1,1-Diphenyl-2-Picrylhydrazyl) analyzes were performed. Testing of extracts as inhibitors and coating additives was carried out by varying the concentration and time of corroding. The results showed that the extract produced contained flavonoids and tannins through qualitative tests using 1% FeCl3 and 10% NaOH, each of which gave a blackish green and a blackish red color. Antioxidant activity was tested by the DPPH method in acetone and methanol, which respectively showed 4509 ppm and 2057 ppm. The testing of turmeric extract as a coating additive was immersed for five days and obtained the best level of 1% which produced the lowest corrosion rate of 0.0228 mmpy with a protection efficiency of 68.60%. Turmeric extract corrosion test as a coating additive was achieved within eight days with a corrosion rate of 0.0011 mmpy and a protection efficiency of 88.89%.

Keywords
turmeric extract, corrosion inhibitors, coating additives, aluminum metal, water the sea

Topic
Chemical Engineering

Link: https://ifory.id/abstract/AgTzQjxGc3eZ

Corresponding Author
Arif Hidayat Zain

Institutions
Project Management, Civil Engineering, University of Indonesia

Abstract
At present, Knowledge Management (KM) is considered an appropriate competitive tool for success in a knowledge-based economy, many organizations have deployed and implemented KM to improve performance. The purpose of this paper is to provide guidelines and assessments for organizations to evaluate the level of KM maturity in national construction service companies in Indonesia and ways to increase them in order to improve organizational performance. The first step in achieving the objectives of KM is the current status of recognition of the ability of KM itself in the company obtained through the knowledge management maturity model. What is the level of KM maturity in the world of national private construction in Indonesia? If it is still low, how to improve it so that the companys performance is better. To increase the level of KM maturity, a review of harmony with key success factors or critical success factors (CSF) is needed to improve organizational performance. Seven functional criteria are used as key elements towards an effective KM approach, namely policies / strategies, HR planning and processes, training and improvement of human performance, procedure methods & documentation processes, technical solutions (IT), approaches to capturing / using tacid knowledge, and KM culture.

Keywords
Knowledge Management, Critical Success Factor, Maturity Level, Construction

Topic
Civil Engineering

Link: https://ifory.id/abstract/gDQHCEek4KAF

Corresponding Author
Sri Hidayati

Institutions
Urban and Regional Planning Study Program, Faculty of Engineering,
Bandung Islamic University

Abstract
In the National Industrial Development Master Plan (RIPIN) 2015 - 2035 Indonesia prioritizes industrial development in the sector of small & medium industrial centers (SIKIM). Indonesia in its economic proportion can be categorized as an industrial country. which is the largest contributor to the national economy with its contribution reaching more than 20 percent, so that Indonesia is included in the ranks of the worlds elite. In the category of manufacturing value added, Indonesia is in the top 10 in the world. This rank is in line with Brazil and the UK and is bigger than Russia, "said the Minister of Industry when delivering a scientific speech at the 86th Graduation Ceremony of the 86th University of Malang in the IV Period 2017 in Malang, Saturday (11/25). Binong Jati area as one of the small & medium industrial centers (SIKIM) which in the city of Bandung, which has the power has made an important contribution to the Original Regional Revenue of the City. This industrial activity has been hereditary since birth in 1960 where the peak of its glory occurred in 1998. Industrial activity shows good prospects because it has been able to absorb the workforce of the local population. In addition the tourism function carried by the city of Bandung will support the importance of the development of the knitting industry center area as a prospect that supports the development of economic activities that are important for a city. This area has a strategic potential location that connects regional and local access that is important for the aspects of marketing and importing raw materials. However, with the entry of AFTA in 2012, the competitiveness of the Binong Jati knitting industry has decreased due to the difference in selling prices. The decline in competitiveness is accompanied by a variety of problems faced in the area described among others by poor open space, poor accessibility, lack of sanitation, under-standard building conditions, poor visual aspects. Based on the occurrence of various degradations, the purpose of this study is to restore the competitiveness of the knitting industry centers and strengthen the Indonesian national industry which is safe, comfortable, and sustainable. To achieve this goal various Revitalization approaches have been designed which include the Rejuvenation Strategy, Hamid Shirvanis Theory, the concept of Green City, the concept of the Neighborhood Unit so that the creation of the Binong Jati knitting industry centers that produce a variety of designs: Land Use, circulation, open space, building period Activities, preservation and conservation. This research is useful as an effort to build a city without poverty, without hunger, creating good health and well-being, the fulfillment of clean water and sanitation as well as economic growth with insudtrial development to ensure the sustainability of cities and communities. This aims is in accordance with 2014 SDGS directives.

Keywords
industry, revitalization, design, urban renewal, sdgs,

Topic
Architecture

Link: https://ifory.id/abstract/knwm8pGzjabJ

Corresponding Author
Raden Rani Indah Salamah

Institutions
Indonesia University of Education

Abstract
The research aims to determine visual-spatial intelligence significance level as Modelling Design and Building Information program aptitude selection test, based on students- digital spatial-ability in Interior Design Subject of SMKN 2 Garut. The research is grounded by no aptitude test was held in Modelling Design and Building Information program of SMKN 2 Garut entry selection, even though the test implementation had been regulated on Republic Indonesia Constitution to provide the programs overview and determine the students- potensials. This research was conducted among 30 second grade students of Modelling Design and Building Information program of SMKN 2 Garut as sample. The research method used quantitative correlational using a simple regression analysis test. The data collection was carried out using Paper Folding Test (PFT) dan Mental Rotation Test (MRT) as visual-spatial intelligence tests, literature reviews, and students- work documentations. The result showed a low correlation and not-significantly positive influence between visual-spatial intelligence and students- digital spatial ability. The significance level of visual-spatial intelligence as aptitude test in Modelling Design and Building Information program entry selection is kindly not measured by one subject-s guideliness, but also based on other subjects contained in Modelling Design and Building Information program of Indonesia Vocational High School.

Keywords
Visual-Spatial Intelligence, Vocational High School, Entry Selection, Aptitude Test

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/qRf3uWp4VgnM

Corresponding Author
Anis zakaria

Institutions
UNIVERSITI PUTRA MALAYSIA

Abstract
Gallery Walk learning and site visit is learning methods that fell under the social constructivism theory of learning that can promote learning towards industrial revolution 4.0. These learning strategies allow students to understand better about the subject or a learning topic that connects them with vast data and industries. This learning strategy creates opportunities for students to share information, views, and ideas with peers and industries. Gallery Walk cooperative is a learning model that can stimulate and strengthen students memory in the learning process because what students learn is seen and analyzed directly, not only seen through images. This study is about the application of Gallery Walk teaching methods that are modified according to the suitability needs of the learning objectives. On subjects related to law and act, students need to understand and evaluate the effects and consequences if they fail to be complied with. The details of the Act need to be memorized and understood in the context of the Hair Care and Hairdressing subject very important in ensuring the right of consumers, salon premises, workers rights and guidelines to work well. The students have visited the saloon in their group to interview the saloon owner related to legislative and act in salon management. During the gallery walk activity, the students were divided into two big groups and every group then divided again into five groups according to the division of law and act in salon management. Modified Walk Gallery strategy was used to ensure all the students involved in the presentation and discussion. A few strategies were used such as smaller group members, an active presentation by group members, Q and A session and assessment session among the other groups members and pre-discussion. From the observations, the student presenters played a good role and they managed to convey the information by giving example to each division on the acts they were presented and managed to create a good climate in discussing and conveying the knowledge related to the real situation in saloon. Besides that, the audiences were also felt confident to throw questions to the presenter until they understand the descriptions of the acts. From the qualitative data, 93.7% of the students were able to answer the examination very well and 89.8% of them could give the correct reality example according to the acts questioned. Related to the finding, the combination of saloon visits and modified gallery walk should be applied to other subjects related to law and act. It needs a good plan teaching method and systematic process to ensure the students capture the real understanding of the saloon law and acts.

Keywords
Theory of social constructivism, Industrial revolution 4.0, Cosmetology Education, gallery walk, sal

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/fNvTj4d6xrka

Corresponding Author
Sriatun atun

Institutions
Universitas Negeri Surabaya

Abstract
Creative teachers are the key to the success of vocational learning in the XXI century. One of the learning models applied to vocational learning is a problem solving or problem solving learning model. The purpose of this study is to describe the effectiveness of vocational mathematics teachers in the learning process with problem solving models in terms of their application, as well as an overview of problem solving skills of vocational high school students. The main instrument of this study was the research themselves assisted with problem solving questions, questionnaires and observation sheets. The results showed that the aspects of learning planning preparation had shown to be effective, but there were still less effective indicator, namely the preparation of worksheet and the use of teaching aids. The category of problem solving abilities of vocational high school students in understanding the problem on average is quite good. But the indicator verifies the results of the answers including the less category.

Keywords
Mathematics Learning, Problem Solving, Vocational High School

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/9gfxva7pdUAX

Corresponding Author
Hafiz Nurrahman

Institutions
Department of Architectural Education, Universitas Pendidikan Indonesia, Bandung, Indonesia

Abstract
The design of Parahyangan Office Rental Space and Apartment is intended to create offices and residential areas that accommodate business and residential functions with the concept of smart building applied to various aspects of architectural design. Parahyangan Office Rental Space and Apartment is the offices and residential areas that accommodate the needs of the community in Kota Baru Parahyangan, not only in business activities but also in residence. In this area, the offices become a place for business and economic activities for the people of Kota Baru Parahyangan and its surroundings. Moreover, the offices also become the biggest business center and office center in Kota Baru Parahyangan and/or Bandung Regency and its surroundings. Meanwhile, the residential areas are the place for the emergence of vertical residential needs in Kota Baru Parahyangan. The Smart building concept is chosen because of the need for efficiency in activities. Living in urban areas requires a high level of mobility and movement, which can be supported using the smart building concept. The system of buildings, in which the occupants live and do their activities, can be set through the intelligent building so that residents can allocate their time and energy to other things. A smart building can also generate a comfortable, productive, and simpler life for residents of the building

Keywords
Smart building, Rental office, Residence, architectural design

Topic
Architecture

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

Corresponding Author
Nazaruddin Nazaruddin

Institutions
a) Research Center for Advanced Vehicle (RCAVe), Universitas Indonesia, 16424, Indonesia
danardon[at]ui.ac.id
b) Department of Mechanical Engineering, Universitas Riau, 28293, Indonesia
nazaruddin[at]eng.unri.ac.id
c) Department of Mechanical Engineering, Universitas Darma Persada, 13450, Indonesia

Abstract
University Indonesia has developed several electric vehicles, one of which is an electric bus. In order to fulfill the local content of this vehicle, reverse engineering of the R260 ladder frame type chassis is carried out. In this paper, to fulfill the local content, we used material of the ladder frame is type SS 400 from PT. Krakatau Steel. After the model was created successfully with finite element software, a static analysis was carried out by taking the von-misses stress and the deflection from the simulation results. Loading is carried out evenly over the two main beam ladder frames totaling 14,200 kg. The support placed in the mounting position of the front and rear wheel leaf springs. The distance of the front overhang is 2380 mm, the wheelbase is 6000 mm, and the rear overhang is 3290 mm. The resulting approach is carried out assuming a three-beam and two-overhang beam model. The results obtained include a maximum von misses stress of 75.8 MPa, a maximum deflection of 2,568 mm and the lowest safety factor 3.2.

Keywords
chassis, ladder frame, von-misses stress, local content, electric vehicle

Topic
EV Body, Chassis, and Platform

Link: https://ifory.id/abstract/y8ChMvXzmGdD

Corresponding Author
Achwan Restu Prayoga

Institutions
a) Faculty of Engineering
Universitas Sebelas Maret
Surakarta, Indonesia
*achwanrestu[at]yahoo.com
b) National Center for Sustaniable Transportaion Technology (NCSTT), Bandung, Indonesia

Abstract
Vehicles are the most important thing to use by human and to make it safe to use, all vehicle need a safe and reliable braking system, the use of frictional brake can raise the probability of braking failure because of high pressure and temperature operation, to make braking safer, there is a new, alternative braking system called Eddy-Current Brake (ECB) that uses magnet in their braking process. This paper aims to know the influence between the shapes of conductor-s face on braking torque using finite element method, using aluminum with mid-iron in one construction to improve the braking torque produced by conductor. Validation was done before starting FEM calculation to achieve accurate FEM settings, the modeling uses ANSYS Electronics Desktop. The shapes used on conductor-s face are sawtooth, half-circle, and square. The highest braking torque performance on these variables are 15.39213, 16.40432, and 14.25 Nm respectively at their critical speed with a magnetic flux of 0.8 – 2 Tesla at all variables.

Keywords
eddy-current brake, brakes, electromagnet

Topic
EV System and Integration

Link: https://ifory.id/abstract/4vrETHZKJbAP

Corresponding Author
Joga Dharma Setiawan

Institutions
Universitas Diponegoro
joga.setiawan[at]ft.undip.ac.id

Abstract
Electric vehicles have the advantage of regenerative braking in which the electric motor can be used as a generator to convert the kinetic energy of a moving vehicle into electrical energy during the braking process. The purpose of this study is to determine the effect of vehicle inertia on the voltage and electrical power profiles at the ultracapacitors as the energy storage system (ESS) and the vehicle speed during the motoring and the generating modes. In this study, an induction motor is used. The combination of regenerative and mechanical braking systems is regulated by the control logic to meet the drivers request. The mathematical model of a regenerative parallel braking system is coded in MATLAB/Simulink. The simulation results show the profiles of electric power flow, energy flow, mechanical braking torque, braking torque by the motor, and the State of Charge (SOC) of the ultracapacitor stacks.

Keywords
Regenerative braking, SOC, ultracapacitors, flywheel, generating mode

Topic
Electric System, Drives, Motors, Machinery

Link: https://ifory.id/abstract/BewnaCkHc8AM

Corresponding Author
Irsyad Nashirul Haq

Institutions
(1)Graduate Student at Engineering Physics
Institut Teknologi Bandung
Bandung, Indonesia

(2,3,4) Department of Engineering Physics
Institut Teknologi Bandung
Bandung, Indonesia

(2)National Center for Sustainable Transportation Technology, Bandung, Indonesia

(1)christio.mege[at]gmail.com,
(2)irsyad[at]tf.itb.ac.id
(3)edi[at]tf.itb.ac.id,
(4)nugroho[at]tf.itb.ac.id,

Abstract
In this research the effect of temperature rising on battery performances such as depth of discharge and electricity generation efficiency had been conducted. After that temperature data acquired from data acquisition process is used as training data and test data to predict temperature using Holt-s Double Exponential Smoothing. The results show that at 0.7C, cells temperatures inside module reached 35.40C, rising about 4.90C. The temperature rising is greater than single cell that rose 30C to 29.70C. Then at 1.4C the module temperature reached 38.60C rising about 8.30C. Single cell temperature at 1.4C reached 35.70C, rising 9.40C. At 2.1C, single cell reached 45.10C with temperature increasing of 18.50C. Module temperature at 2.1C reached 480C with 190C increasing. Efficiency of electricity generation of single cell at 0.7C is 92.58%. The efficiency reduced to 84.48% at 1.4C rate. Then at 2.1C rate, single cell only capable of generated energy about 23.3Wh with 76.82% efficiency. Module at 0.7C has electricity generation efficiency of 91.58%. At 1.4C, the efficiency reduced to 83.38%. At 2.1C rate, the efficiency was getting smaller to 72.9%. Predictions conducted show that Holt-s Double Exponential Smoothing can predict the temperature rising in single cell. In module temperature predictions, training data was taken from one cell only to predict the rest of the cells. At 0.7C, Holt methods can predict six out of eight cells well. Five out of eight cells could also be predicted well at 1.4C. However at 2.1C, just four cells could be predicted well. The predictions accuracy of Holt-s Double Exponential Smoothing decreased when the temperature uniformity in module decreased as the C-rate increased

Keywords
Battery Performances, Temperature Predictions, Holt-s Double Exponential Smoothing, Discharging Process

Topic
Cooling System for Electric Vehicle

Link: https://ifory.id/abstract/demMZ3qNgKWy

Corresponding Author
HAPPY DAVID PRADHAN

Institutions
Jawaharlal Nehru University,
New Delhi, India

Abstract
This legal theoretical article based on secondary sources aims to critique the concept of “Transitional Justice” as against criminal trials and punishment, for the establishment of Rule of Law in post-authoritarian democracies, especially in the context of prosecution for Human Rights Violations during the authoritarian regime.

Keywords
Rule of Law, Transitional Justice, Criminal Prosecution, Human Rights

Topic
International Law

Link: https://ifory.id/abstract/A4HjwdUVcDhC

Corresponding Author
Irsyad Nashirul Haq

Institutions
(1)Graduate Student at Engineering Physics
Institut Teknologi Bandung
Bandung, Indonesia

(2,3,4) Department of Engineering Physics
Institut Teknologi Bandung
Bandung, Indonesia

(2)National Center for Sustainable Transportation Technology, Bandung, Indonesia

(1)engly.nd[at]gmail.com,
(2)irsyad[at]tf.itb.ac.id
(3)edi[at]tf.itb.ac.id,
(4)brian[at]tf.itb.ac.id,

Abstract
In this research, the process of monitoring of the electric variable on a 14 Ah prismatic LiFePO4 battery has been carried out. The variables monitored include electric current, voltage, energy and internal resistance to be analysed for its effect on the temperature variable on the battery. An analysis of the relationship between the increase of temperature and the efficiency of energy has also been done. This process succeeded in getting the electrothermal value or heat arising from the electric variable in the battery. Electro thermal in the battery cell obtained the highest value 19.5 KJ and in the module obtained a value of 25.04 KJ, while the rate of electrothermal addition varies from 2.5 J/s to 22.5 J/s in a single cell and 20 J/s to 180 J/s on the battery module. Monitoring has also been implemented in the process of releasing battery energy both cells and modules. Monitoring of variable voltage, current, battery capacity, time and temperature has been done thus found that T of the battery was 20 0C when emptied with a discharge rate of 2.1 C and the temperature change of at least 3 0C at 0.7 C. While at 1.4 C, the temperature rises around 12 0C. In the battery module, the temperature rises around 6 0C when the battery module emptied at a rate of discharge 0.7 C, 15 0C at 1.4 C and around 20 0C at 2.1C. Machine learning can be used to estimate the increase of the temperature in a battery based on changes in voltage and electric current. This is done in order to determine the maximum electric current that can be supplied to the battery thus the thermal conditions of the battery can be maintained. The accuracy of estimating temperature value by using SVR on a single battery cell was 91.2% with RMSE was 1.107 0C while for the modules obtained 82.37% with RMSE is 1.18 0C. The accuracy value used RF for single cells was 97.28% with RMSE was 0 .625 0C and 98% with RMSE was 0.3 0C for battery modules.

Keywords
Prismatic LiFePO4 Battery, Support Vector Machine, Electrothermal, Random Forest

Topic
Cooling System for Electric Vehicle

Link: https://ifory.id/abstract/dpyUcRXZY3E7

Corresponding Author
Chico Hermanu Brillianto Apribowo

Institutions
Department of Electrical Engineering
Universitas Sebelas Maret
Surakarta, Indonesia

National Center for Sustainable Transportation Technology
Bandung, Indonesia

Abstract
The general problem of operational power transformer was appearing in both thermal and electrical failure. Most of the power transformer usually used insulator oil that was functioning as cooler and to dissolve its hazardous gas in order not to circulate independently. Identifying type and number of gas concentration, which was dissolved in oil could provide information about the indication of failure that occurs in the transformer. Method for identifying and analyzing dissolved gas in the oil was called dissolved gas analysis (dga). Procedure for oil sampling of testing dga with a method of morgan schaffer was using syringe. In the use of syringe, after taking oil sample into syringe and then syringe was extracted to separate components of dissolved gas. Utilizing syringe in the process of extraction was not maximal since it had to be manually done the process of extraction for each syringe. In this research, it was done in making automatic syringe shaker, which could do an extraction of transformer oil to extract dissolved gas in the transformer oil automatically. This research would also determine the time and speed variable to obtain optimizing syringe shaker. This instrument used a dc motor as a driving source. Based on data, which was obtained, the percentage of extraction level that was obtained with using automatic syringe shaker transformer oil was smaller compared with the manual process and it had an error level of 0.124%. The timer test result of the length of extraction time showed that an error percentage of approximately 0.004%.

Keywords
dissolved gas analysis, syringe shaker, transformer oil

Topic
Power Electronics and Its Applications

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

Corresponding Author
Chico Hermanu Brillianto Apribowo

Institutions
Department of Electrical Engineering
Universitas Sebelas Maret
Surakarta, Indonesia

National Center for Sustainable Transportation Technology
Bandung, Indonesia

Abstract
Electrical energy is the key to the development of human civilization, it causes an increase in electricity production using fossil fuels. This causes the emergence of the need for electricity generation with renewable energy sources. This research discusses the improvement of efficiency in photovoltaic cells (PV) by using the floating method and also the cooling method, especially, passive heatsink cooling. Tests carried out measures the performance of PV panels by measuring the influence of floating and cooling methods. The data shows that the increase in power is 30.54% with floating method while using passive heatsink cooling only increase power output by 14.31%. The temperature in the PV panel tends to increase with increasing intensity of solar radiation. In addition, both method resulted in increase of the PV panel temperature by 6.42% and 0.60% for floating method and passive heatsink cooling respectively.

Keywords
photovoltaic cell, PV cooling, floating, temperature, efficiency.

Topic
Power Electronics and Its Applications

Link: https://ifory.id/abstract/6hc4aNPXB9eK

Corresponding Author
pradita maulia

Institutions
(a) School of Life Sciences and Technology, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
1 pradita.maulia[at]students.itb.ac.id
3 marsel[at]sith.itb.ac.id
(b) School of Electrical Engineering and Informatics, Bandung Institute of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
2 kevin18.liem[at]gmail.com
4 utama[at]informatika.org

Abstract
Karyotype is a complete image of chromosomes which arranged according to the length, number, shape, and banded of an individual cells chromosomes. Generally, the karyotype is performed by taking the chromosome image at metaphase, cutting out, and identifying each chromosome image based on G-banded manually. This process consumes a lot of time, energy, and inconsistency result. Therefore, it is necessary to develop an application which helps the karyotyping process automatically or at least semi-automatically. In this experiment, we proposed a semi-automatic karyotyping process by utilizing image processing techniques of normal human karyotype. The development of semiautomatic application prototype includes three steps, they were preprocessed of chromosome image, feature extraction of chromosome image, and utilized tools to facilitate the users. The methods which used in preprocessed of chromosome image are gamma enhancement, bilateral filtering, adaptive thresholding, and flood-fill algorithms. The feature extraction of chromosome image is used to extract the morphological features, which will measure the chromosome based on length and pair of chromosomes using skeletonize method. Functionality tools join and cut for users to modify the results of segmentation chromosome image has been successfully created. Based on the analytical result, it can be concluded that the proposed method can provide a relatively good representation of the chromosomes to assist the further chromosome analysis process.

Keywords
Chromosome; Karyotyping; Image processing; Semiautomatic application

Topic
Biomedical, Robotic and ICT engineering

Link: https://ifory.id/abstract/rjnYJNekyt7h

Corresponding Author
Marselina Irasonia Tan

Institutions
1) School of Life Sciences and Technology-Institut Teknologi Bandung
2) School of Electrical Engineering and Informatics – Institut Teknologi Bandung
3) Hasan Sadikin Hospital & Medical School-Padjadjaran University

Abstract
Cancer is a disease caused by cell proliferation abnormalities. One of the methods that can be used to overcome this disease is by removing the cancerous tissue. Identification of cancer tissue in the operation stage (intraoperative consultation) is an important stage for the surgeon to determine the next action. Until now, tissue identification in intraoperative consultation is still done manually using cryosection methods. The cryosection method is reported to have fairly good accuracy in the identification of cancerous tissue. However, the accuracy of this method is very dependent on the experience and skill of the doctors, so this method is very vulnerable to human error. To overcome this problem, a standardized identification method for a cancer tissue in intraoperative consultation is needed to reduce the human error. The development of cancer identification methods by using tissue permittivity at microwave frequencies in recent years has shown quite promising results. This is because the measurement of tissue permittivity using microwave frequencies can be performed several times without damaging the samples. In addition, several studies on several types of cancer showed differences in tissue permittivity between cancerous and normal tissue. Until now there are no studies that report the application of this method, especially for intraoperative consultation for ovarian cancer. To answer the problem, this study aims to create and test the tool that been made that can distinguish cancerous and normal tissue based on the tissue permittivity value using microwaves frequencies. Besides being able to minimize human error, the device is designed to be portable and able to provide diagnostic results faster than the cryosection method. The initial stage of this research is the production of the tools. The device that has been made is then tested for the ability to differentiate tissue based on water content parameters and tissue type before measuring cancer samples. Measurements are made every 0,002 GHz in the microwave frequency ranging from 8,2 to 12,4 GHz or around 2000 measurement points using TE10 measurement method. The measurement results then processed using the TPS (transmission phase shift) method to determine the permittivity value. The next stage is the measurement of ovarian tissue samples (n=12) obtained from Hasan Sadikin Hospital (RSHS) Bandung. The tissue obtained was identified by RSHS medical doctor diagnosis. Fresh sample from the surgery is then measured in less than 2 hours. The permittivity values of each tissue are then compared and their significance is tested using statistical analysis. The tool that designed was successfully made in a relatively smaller dimension (6,28 x 23,5 x 2,11 cm) that made this tool portable. Measurement of tissue samples using this tool is done within ± 5 minutes from sample preparation until the results came out, so this tool can analyze tissue samples faster than the cryosection method which ge

Keywords
microwaves, permittivity, ovarian cancer

Topic
Biomedical, Robotic and ICT engineering

Link: https://ifory.id/abstract/yGcMhjbaL7uU

Corresponding Author
Muhammad Luthfi Naufal

Institutions
[1]. Department of Computer Science Education, Universitas Pendidikan Indonesia, Bandung
[2]. Indonesian Biomedical Engineering Society (IBES)
[3]. Department of Electrical Engineering, Institut Teknologi Nasional (ITENAS) Bandung
[4]. Institute of Electrical and Electronics Engineers, Inc.

Abstract
Background: Indonesia is a disaster prone country, such as: earthquakes, tsunamis, volcanic eruptions, floods, landslides, and man-made forest fires. After typical disaster, emergency medical services are needed, but a number of challenges should be overcome. Meanwhile, unmanned aerial vehicles (drones) have been available in the country to help overcoming these challenges and enhancing the medical services in need. Purpose: The research has the following objectives: To review the technical specifications and capabilities of different types of drones currently available in the market. To enhance and newly develop derived disaster applications, especially drones with camera. To design and develop new disaster applications for enhancing emergency medical services. Method: To carefully review the technical specifications of the existing drones suitable for disaster applications and emergency medical services. To design and develop drone applications for enhancing emergency medical services, particularly related to do preliminary aerial survey and transmitting the acquired images to the medical team, as well as to significantly enhance specific emergency medical services after disasters. Results: Based on our experience in working with currently available drones, we are pretty sure that the preliminary aerial survey mission could be achieved. More specific drone applications for carrying important emergency medical logistics will need further design steps and field experiments. Conclusions: Encouraging results on the drone applications for enhancing the emergency medical services during & after disasters are very much expected. When the maximum payload is below 1 kg, important emergency medical logistics such as medicines, vaccines and blood packs could also be achieved.

Keywords
drone, uav, emergency, paramedics, medical logistics, disaster

Topic
Biomedical, Robotic and ICT engineering

Link: https://ifory.id/abstract/M6tfBAbd9zrg

Corresponding Author
Sugondo Hadiyoso

Institutions
(a*) Bandung Institute of Technology and Telkom University
(b) Bandung Institute of Technology
(c) Bandung State Polytechnic

Abstract
Respiratory rate (RR) is one of the vital parameters of a persons health. In certain conditions such as patients with respiratory problems or heart who are in the treatment room, respiratory rate monitoring is carried out continuously. In health care centers such as hospitals, RR measurements use a bed side monitor. However, this device is not yet widely available in small scale health services such as Community Health Centers (Puskesmas) because this device is expensive. One alternative for RR extraction is through plethysmographic wave analysis measured using a photopletismograph (PPG) device. This is based on the hypothesis that breathing affects the dynamics of PPG wave amplitude modulation so that by extracting this information we can know the respiratory rate. PPG devices are widely available in small health services because of their low prices. Meanwhile, PPG is only used to measure heart rate and oxygen saturation. In this study, a method for extracting RR information is proposed by analyzing PPG waves. Two methods, namely empirical mode decomposition (EMD) and variational mode decomposition (VMD), are applied to obtain respiratory oscillation information. The aim is to get the most optimum method for RR extraction. The performance test of the two proposed methods was carried out through time-frequency domain transformation using Fast Fourier Transform. The method used in this study is expected to be applied to conventional PPG devices.

Keywords
EMD; PPG; respiration rate; VMD

Topic
Biomedical, Robotic and ICT engineering

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

Corresponding Author
Akhmad Dyma Habib Syababa

Institutions
a) Department of Biomedical Engineering, School of Electrical Engineering and Informatics, Bandung Institute of Technology, Jalan Ganesha 10, Bandung 40132, Indonesia
*akhmadyma[at]students.itb.ac.id
b) Department of Engineering Physics, Faculty of Industrial Technology, Bandung Institute of Technology Jalan Ganesha 10, Bandung 40132, Indonesia
c) Department of Biomedical Engineering, Faculty of Life Sciences and Technology, Swiss German University, The Prominence Tower, Jalan Jalur Sutera Barat 15, Tangerang Selatan 15143, Indonesia

Abstract
In the past few years, various studies on the diagnostic medical field have been conducted which have resulted in the development of wearable devices for biomedical applications. It was concluded that POCT platform should be low-cost, easy to use, and portable. Fabric is an interesting platform for point of care testing because it has inexpensive material and enough scalability and specification. In this project, wicking and passive mixing properties in fabric-based flexible microfluidic system were investigated. The fabrication was done with a low-cost method using batik wax patterning method to divide the hydrophilic and hydrophobic area. A mixture of samples with food coloring was dropped on the hydrophilic area using pipetting method. Wicking and passive mixing then analyzed by observing the critical zones around the junction channel. The hydrophilic channels wick the analyte across the chamber region by natural capillary action, allowing the color to change in shades upon reaction. The initial proof of concept was done by using food coloring experiment and the analysis was indicated by color changes of the area. Analyses were carried out using PC-connected digital microscope and computer-aided image software analysis ImageJ to observe geometric dimensions and measure changes in color intensity level so that the wicking and mixing properties such as sample capacity, flow rate, and the other mixing effectiveness parameters can be found. The results of this study can be utilized for future improvement of low-cost and flexible microfluidic device for POCT application in developing countries.

Keywords
Microfluidic, Fabric-based material

Topic
Biomaterials

Link: https://ifory.id/abstract/VZuGk4gwRrAF

Corresponding Author
Meutia Fakhriah Basuki

Institutions
Fakultas Teknik Sipil dan Lingkungan, Institut Teknologi Bandung

Abstract
Seiring dengan pertumbuhan industri kecil menengah (IKM) yang pesat, hal ini berbandingan lurus dengan dampak yang ditimbulkan terhadap lingkungan dan lingkungan kerja tersebut. Industri batik termasuk salah satu IKM yang menjadi unggulan di beberapa daerah Indonesia, seperti Cirebon dan Yogyakarta. Dampak yang ditimbulkan pada lingkungan berasal dari bahan produksi batik yang dapat mencemari udara ambien dan udara di lingkungan kerja. Sebagian besar industri batik di Cirebon dan Yogyakarta beroperasi dalam skala home industry, yang tidak memiliki pengolahan limbah udara. Dampak yang ditimbulkan tidak hanya emisi namun juga pada pekerja yang terinhalasi udara tersebut. Pada salah satu Industri Batik di Cirebon ditemukan partikulat dan gas hidrokarbon BTEX dan PM 2,5 dan logam berat pada partikulat di dalam ruang kerja pengrajin batik. Pengukuran udara di ruang kerja pengrajin batik digunakan Low Volume Sampler dengan flow 2,5 L/min. Dari hasil pengukuran dapat diidentifikasi kandungan PM 2,5 di ruang kerja pengrajin batik pada kisaran 3,53 – 109,14 μg/m3. Terdapat pula kandungan toluene pada kisaran sebesar 0,259 – 0,288 mg/m3 dan 0,123 – 0,128 mg/m3 xilen. Logam berat yang terkandung dalam partikulat antara lain Al, Zn, dan Fe. Dari hasil tersebut ditemukan konsentrasi PM 2,5 yang melebihi ambang batas standar WHO yaitu 25 μg/m3. Maka untuk mengurangi dampak dari limbah udara di lingkungan kerja diperlukan sistem pembuangan lokal di Industri Batik yang termasuk dalam pendekatan produksi bersih.

Keywords
pencemaran udara, BTEX, produksi bersih, batik, exhaust-ventilation

Topic
Biomarker, Drug Design, Delivery and Teragnostic

Link: https://ifory.id/abstract/h4TaHdCuJ2pv

Corresponding Author
Athhar Manabi Diansyah

Institutions
Universitas Hasanuddin

Abstract
The aim of this study was to find the proper method for sperms immobilization without reducing DNA integrity and damaging the shape of bovine sperms . Sperm immobilization was carried out by double shots using laser Octax MTG with wavelength of 1.48 μm and Eye Ware 3.0 software. A total of 20 sperms were shoot at 4 points, which was the tail end, the mid-tail, the neck and the head of the sperms. The shooting of 1.48 μm laser had the highest effect on immobility reaching 100% on the head and the DNA integrity of the sperms reached up to 90%, the shape of sperms were remained normal (100%) and did not showing significant effect. The results of this study indicated that (1) the laser diode with a wavelength of 1.48 μm at the mid-tail section of the sperm was most effective for sperm immobilization; (2) the use of laser diodes with a wavelength of 1.48 μm can be used to immobilize the sperms before intracytoplasmic sperm injection (ICSI). The diode laser shooting with a wavelength of 1.48 μm at the tail was the most effective in immobilizing the sperms with an immobility of 95.00% ± 5.98 and DNA integrity of 85.00% ± 11.65.

Keywords
Immobilization, sperm, laser diode, ICSI, Bovine.

Topic
Animal reproduction

Link: https://ifory.id/abstract/LJkUKYmTRHV8

Corresponding Author
Munir Munir

Institutions

1Animal Husbandry Study Program, Faculty of Agriculture, Animal Husbandry and Fisheries,
University of Muhammadiyah Parepare,South Sulawesi, Indonesia (91111)
2Doctoral Program, Agricultural Science Study Program at Hasanuddin University (UNHAS) Makassar, Indonesia (90245)
3Animal Production Department, Faculty of Animal of Science, Hasanuddin University, Makassar, Indonesia (90245)
4Animal Nutrition Department, Faculty of Animal of Science, Hasanuddin University, Makassar, Indonesia (90245)

* Corresponding author: asmuddin_natsir[at]unhas.ac.id

Abstract
The diversity of rumen bacteria in ruminant animals is highly determined by various factors, including the breed of the animal and the feed consumed. The purpose of this study was to evaluate the diversity of rumen bacteria of bali cattle due to the provision of ration consisted of rice straw and elephant grass as a basal diet. Three adult bali cattle were given ad libitum a ration consisted of rice straw and elephant grass for four weeks before taking the rumen fluid samples. In addition to the basal diet, each animal was also given a concentrate at the rate of 0.5% of the body weight. Rumen fluid samples were analyzed for pH, NH3 and VFA, while the diversity of the rumen bacteria was determined by the Illumina Sequencing technique. The results of the study showed that rumen conditions of the animal were ideal for rumen bacterial growth, indicated by the value of rumen pH, NH3, and VFA of 6.8, 156.7 mg/L, and 114.3mmol/L, respectively. Furthermore, based on SILVA taxonomy, two dominant phyla, i.e. Bacteroidetes and Firmicutes, were successfully identified in this study. At the genus level, the most dominant group identified was Prevotella 1 followed by the Christencenellaceae R-7 group. The analysis also showed the existence of uncultured rumen bacterium and uncultured bacterium with a percentage of less than 5% of the whole population of rumen bacteria. In conclusion, the feed provided for the animal was good enough to support rumen bacterial growth and the Illumina sequencing technique used in this particular study was able to identify the existence of dominant rumen bacteria as well as the uncultured rumen bacterial of bali cattle under such typical feeding condition.

Keywords
Keywords: rumen bacteria, rumen fermentation characteristics, bali cattle, illumina sequencing technique, Silva Taxonomy, typical feeding condition

Topic
Animal Nutrition and feed technology

Link: https://ifory.id/abstract/3U4TENey8thb

Corresponding Author
Fransiska Widyawati

Institutions
a) Universitas Katolik Indonesia Santu Paulus Ruteng

Abstract
This paper explores the custom of inheritance in Manggarai, Eastern Indonesia. It analyzes how inheritance is practiced today and whether there are changes in people-s perception on women-s inheritance rights and if so, what factors are responsible for such changes. This study has discovered that gender inequality is still inevitable in the inheritance custom in Manggarai due to a strong patriarchal ideology. Women in this community are vulnerable to unfair treatments due to the lack of support for women-s rights. This phenomenon is aggravated by men-s sense of entitlement and materialism. This paper serves as a reminder that gender awareness is still uncommon in many communities in Asia including in Indonesia; hence, there is a need for greater spread of awareness about gender equality. Improvements in education, career opportunities, and economic status for women can potentially be the catalyst of change in perception of people in a patriarchal community.

Keywords
Inheritance rights, Manggarai, Eastern Indonesia, women-s rights, gender

Topic
Culture

Link: https://ifory.id/abstract/der63TaXZyqv

Corresponding Author
Eka Yusriansyah

Institutions
Faculty of Cultural Science, University of Mulawarman
Jl. Ki Hajar Dewantara Gunung Kelua Samarinda 75123

Abstract
Luka Sebuah Negeri is book of poetry written by populer Professor of anthropology in Indonesia, M. Junus Melalatoa. It is actually the result of observations and field research of Prof. Junus as ethnographer during visiting many areas corner in Indonesia Archipelago which written aesthetically and cannot be presented in ethnography scientific report. This paper discusses the image of hinterland ethnic, especially Dayaknese in Kalimantan Island. It is aimed at investigating the ethnicity and cultural phenomenon of Dayaknese. This paper belongs to anthropology of literature research which uses ethnography and stylistics theory. The data of the research divided into two, the eight poems in Luka Sebuah Negeri as the primer data and the related ethnography texts as the secondary. The primer data is analyzed by stylistics theory in order to uncover the aesthetic values so those poems are legitimated to be labeled as literary work since they are truly different to ethnography text in common. This paper in addition is descriptive qualitative research. The result of discussion reveals those eight poems represent the way of life, traditions, rituals, and arts. The diction of local language is becoming strength in exploring the ethnicity and successful in constructing the readers- imagery of Dayaknese in maintaining identity toward modernity.

Keywords
Dayaknese, Luka Sebuah Negeri, anthropology of literature, stylistics

Topic
Literarture

Link: https://ifory.id/abstract/ULrNxpWq9utk

Corresponding Author
Khudoyberdi Abdivaitov

Institutions
1, 2,4Land Use, Tashkent institute of irrigation and agricultural mechanization engineers (TIIAME), UZBEKISTAN.
(E-mail: alik5656[at]bk.ru, abdivaitov90[at]list.ru)
3 The head of Scientific Researches department, Uzbek state research – project institute on land management “UZDAVERLOYIKHA”, UZBEKISTAN.
(E-mail: b.inamov[at]ygk.uz)

Abstract
The article researches calculating natural productive capacity of land plot soil of farming economies in today-s limited water supply environment of the Republic of Uzbekistan which is considered one of the developing countries in Central Asia, i.e. it explores both theoretical and methodological aspects of determining soil appraisal and issues of economic land assessment on its base. That is why the rational and efficient use of irrigation water in today-s limited water distribution is one of the most important issues for any farm, and it is extremely important to take into account the process of soil valuation and the economic assessment of irrigated land, as the land valuation data. the positive solution of a number of farm issues. Background: Over the last 15-20 years, it has been conducting the problems of improving the methodology of land distribution in the irrigated regions of Uzbekistan, as well as the organization of land use in the economic sectors using this land valuation data. Aims: state the aims of your study The primary aim of this research is to evaluate of producing abilities of farmland in the condition of limited water supply in Uzbekistan. Because of water scarcity is one of the huge problem in agricultural sector of the country. Uzbekistan has a huge potential of having different categories of lands, they mostly belong to the national government. Moreover, the population of this country has been significantly increased during the last decade, and the primary source of income of most of the people is directly connected to agriculture activities. In addition, various factors such as geographical location, different climate conditions, soil fertility, timely exchange of seasons, proper road and power line networks, and water resources, provide this country to a potential of land use in a wide range of agriculture and industrial purposes. Materials and Methods: this section describes the materials and methods you have used in your study. Please provide any statistical methods applied in your study here Some national statistical data are used for analysing farm-s irrigated lands in this article. Methods of constructive, grouping, analytical analysis were used in the study. Results: The proposed correction of irrigation water supply coefficients is one of the factors that does not allow solving the problem positively. The fact is that soil boundaries do not correspond to the boundaries of land plots or fields of farms, because the soil boundaries are formed due to the natural processes taking place in the area, and the land boundaries are artificial boundaries. Conclusion: It can be concluded from these studies that the proposed methodology of determining the natural fertility or natural production capacity of irrigated soils allows for a more accurate calculation of the normative value of irrigated land in today-s limited water distribution. This, in turn, will allow farmers to effectively organize

Keywords
Keywords: agricultural land, economic productivity, farm, gross income, irrigated land, irrigation water, limited water distribution, mechanical composition of soil, natural fertility, natural production potential, net income, normative value of land, salinization, soil fertility, subsurface

Topic
Environmentally Sustainable Agriculture

Link: https://ifory.id/abstract/Q8UBAtGzPDm2