Indonesia Conference Directory

Corresponding Author
Lina Troskialina

Institutions
1) Dept. of Chemical Engineering, Politeknik Negeri Bandung, Bandung 40012, Indonesia
2) National Nuclear Agency of Indonesia, Jalan Tamansari No.71, Bandung 40132, Indonesia
3) Research Center for Chemistry, Indonesian Institute of Sciences, Serpong 15314, Indonesia

Abstract
Solid Oxide Fuel Cells (SOFCs) offer their ability to directly convert biogas into electricity via internal dry reforming. At POLBAN NiYSZ-based SOFC anodes were manufactured via aqueous tape casting. Raw materials such as NiO and yttria stabilised ZrO2 powders, glycerol, polyvinyl alcohol (PVA) and water were weighed and mixed. The obtained slurry was ball milled, de-gassed, tape-cast, and dried. The good green tapes were then sintered at 1200˚C. The sintered tapes were characterized for the electrical conductivity at 600-800oC, morphology and composition using SEM/EDX, and hardness using Vickers hardness tester. The resulted morphology and composition of the anode tapes were comparable with those of the reference anode tape, with pore sizes ranging from 100ɳm-1μm and 28% porosity (pore volume). The tapes- hardness after sintering were in the range of 170,3 HV and 212.2 HV. Under reduced condition, their conductivities were 0.0981 Siemens and 0.5291 Siemens at 750oC and 800oC respectively. The successful attempts to make NiYSZ-based SOFC anodes using locally available materials and equipment are promising as the initial steps for further development of SOFC manufacturing in Indonesia. The next steps to do in this work are to evaluate the catalytic activities of the anode towards dry reforming, then to build the full SOFCs and to test their electrochemical performance.

Keywords
solid oxide fuel cells; Ni-YSZ anodes; aqueous tape casting

Topic
Chemical Engineering

Link: https://ifory.id/abstract/nfMd29mUWReT

Corresponding Author
Harvei Desmon Hutahaean

Institutions
PTIK-FT, Universitas Negeri Medan
Jalan Willem Iskandar/ Pasar V, Medan 20221, Indonesia

Abstract
Nowadays, the development of science and technology is quite fast. Where this also affect hotel facilities that are developing as well as those which are used daily for staying, meetings, wedding party or just visiting. The better services and facilities provided, the more people will come and stay and use the facilities at the hotel, whether it is room facilities, meeting room facilities, facilities for an event and many others are provided in each hotel. Each of this hotel wants to give satisfaction to guests who come to use the hotels facilities and services. Every hotel has a grade or class. Therefore opinions and complaints given by guests will be very useful to improve the hotel-s service quality. To find out about the level of service quality it is necessary to measure the satisfaction level of each guest. To measure the customer satisfaction level, an information system is required by applying the servqual method to measure the service quality from attributes of each dimensions, this information system will be used by the hotel management to analyze the satisfaction level of hotel guests and can be used to assist in decision making.

Keywords
Service, Facilities, Satisfaction Level, Servqual Method, Information System

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/9DG8rwayzfqe

Corresponding Author
Waway Qodratulloh Suhendar

Institutions
POLITEKNIK NEGERI BANDUNG

Abstract
This article discusses a description of discipline character of Politeknik Negeri Bandung (Polban) students in the class of 2019. This study becomes important considering the results of this study which shows that there is a relationship between students- discipline character with their academic achievement. In addition, the result of this study is useful as an input for the development of character education programs in Polban. This study shows as many as 62.77% Polban students have discipline characters in the medium category, 26.56% of engineering program student and 30% of non-engineering program students have high discipline characters. 25% of male students and 30. 4% of female students have high discipline character. Therefore, in general, it is concluded that the average students of Polban have no difference in the discipline character both based on educational programs and gender.

Keywords
Character education; discipline character; students

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/864FEnfMmTPx

Corresponding Author
Ressy Dwitias Sari

Institutions
PTIK-FT, Universitas Negeri Medan

Abstract
Academic loads in writing a thesis cause students difficulties to complete studies. This problem can be solved with the application of an expert system with early detection of depressive end-level students that compares several methods such as the Certainty Factor method and the Dempster-Shafer method. Certainty Factor method is to measure certainty of facts or rules in defining the level of expert confidence, while the Dempster-Shafer method combines uncertainty that has characteristics according to the way of thinking of experts but has a mathematical basis. Comparison of these methods is to get the most appropriate and best method for early detection of depression. The methodology used in this study is a comparative test of two methods, with a mechanism starting from (1) Gathering data related to the depression of final year students; (2) Data acquisition and weighting of confidence values; (3) Calculate formulations from both methods; (4) Perform a comparative test to obtain conclusions. The result shows that two examples of cases with different symptoms as input data, the probability value of the two sample cases resulted in the Certainty Factor method having the highest probability value compared to the Dempster-Shafer method. Certainty Factor method obtains the highest value which means this method is the most appropriate and the best model in early detection of depression. The Certainty Factor method will be implemented in building an expert system for early detection of depression to assist students in drawing conclusions of the initial diagnosis before conducting an intensive psychological examination.

Keywords
Expert System, Depression, Certainty Factor Method, Dempster-Shafer Method

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/aVkXe7gK6BNM

Corresponding Author
Puput Wanarti Rusimamto

Institutions
Universitas Negeri Surabaya

Abstract
This research is a research development that aims to produce modules and ZEN Programmable Relay application trainers that are applied to students majoring in Electrical Engineering, State University of Surabaya. The method used is to use the development of the four D model. The development process carried out there are 4 stages namely define, design, develop, and assess, but in this study only reached stage D to 3. The subjects of this study were students of the 2016 Electrical Engineering Education Undergraduate Program in Surabaya State University who programed PLC courses. The results of this study are in the form of validator ratings of modules with an average value of 3.031, which means good value and proper use, and the results of student questionnaire responses about the format of 78.83%, 78.33% concept, 77.6% language, and picture 75%, and from the results of performance tests on each Learning Activity (KB) get a total score of 95 on KB 2 and KB 3, for KB 4 and KB 5 of 90. Based on these results it can be concluded that the Module and Trainer of PLC ZEN Programmable Relay Application categorized as good and can be used as a reference for PLC courses.

Keywords
module, trainer, PLC application, ZEN programmable relay, Unesa Electrical Engineering students.

Topic
Research and Development in Engineering Education

Link: https://ifory.id/abstract/eFY7unhp6DBZ

Corresponding Author
Reni Rahmadani

Institutions
PTIK-FT, Universitas Negeri Medan, Indonesia

Abstract
Data confidentiality is an important aspect of information systems. In case of that we need an application to maintain data confidentiality. This study aims to compare two methods of data security systems, namely using the RC4A algorithm which is a symmetric key cryptographic algorithm and the RSA algorithm which is an asymmetric algorithm with a hybrid process on the RC4A and RSA algorithms to secure the secret key of RC4A and speed up the encryption process of RSA. The study uses a comparative test on two algorithm methods, according to data security system parameters. Data is encrypted with the RC4A algorithm and the RC4A key obtained from KSA RC4A will be encrypted with RSA before sending to the receiver. The test results get Hybrid cryptosystem RC4A-RSA faster in completing the encryption process than RSA. Furthermore, the RC4A key can be secured by being encrypted using the RSA algorithm.

Keywords
Cryptography, RC4A, RSA, Hybrid Cryptosystem

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/Ym28fByNQKtR

Corresponding Author
S Sriadhi

Institutions
a) FMIPA, Universitas Negeri Medan, Indonesia
b) PTIK FT, Universitas Negeri Medan, Indonesia
*sriadhi[at]unimed.ac.id

Abstract
Media is required on many topics in science and engineering. The fact shows that there are many teaching and learning processes that present conceptual and abstract material that do not use media, and then involve the low in student learning outcomes. This research examines the effectiveness of learning using multimedia exploratory for students with different learning styles. The research was conducted with quasi-experiments for Physics for Engineering subjects. The Students divided into three groups namely Visual Learning Styles (LS-V), Auditory Learning Styles (LS-A) and Kinesthetics Learning Styles (LS-K). The learning process is carried out with a tutorial method using exploratory multimedia. The results of the study prove that the overall use of exploratory multimedia can improve learning outcomes with mean of gain score 59.16. Learning outcomes of students the LS-V group were higher compared to the other two groups. Furthermore, the learning outcomes of the LS-A and LS-K groups differed in the average learning outcomes but were not significant. The study recommended to use exploratory multimedia especially for LS-V groups.

Keywords
exploratory multimedia, learning style, learning outcomes

Topic
Computers, Internet, Multimedia in Engineering Education

Link: https://ifory.id/abstract/wVvgz7bGfMnF

Corresponding Author
Bambang Setio Budianto

Institutions
a) Civil Dept, Politeknik Negeri Bandung, Jl. Gegerkalong Hilir, Ds Ciwaruga, Bandung.
* bs_budianto[at]polban.ac.id
b) Post Graduate Student, MTRI Politeknik Negeri Bandung, Jl. Gegerkalong Hilir, Ds Ciwaruga, Bandung.

Abstract
Cilember river flows from North to South of Cimahi and crosses PURBALEUNYI Toll Road in downstream. Therefore normalization of Cilember river Cimahi can impact the PURBALEUNYI Toll road. Hydraulic simulation carried out to determine the impact and formulate the mitigations alternatives. The study was conducted based on Detail Engineering Design Data for Cilember Normalisation Program prepared by Citarum River Authority as a base data. Two-dimensional HEC-RAS model was used to simulate the impact of the river normalization program. The model also used to evaluate the alternatives (detention pond, diversion of flows) to minimize the impact of the Cilember normalization program to PURBALEUNYI Toll road. Applying 10 year return period and HEC-RAS simulation, with an existing condition, 26 505 sqm area is inundated mostly in the North area of Toll Roads. After the normalization program, the inundation area shifts to the south area, including Toll road. The further simulation shows that normalization of the river can reduce inundation area to 7 993 sqm. Simulation of combination between detention pond and diverting the excess flow of Cilember to Kali Malang inundated area occurs, but it does not affect the toll road.

Keywords
Cilember, Detention Pond,Flood, HEC-RAS, Toll Road,

Topic
Civil Engineering

Link: https://ifory.id/abstract/GZWuAVBTeJF7

Corresponding Author
Riswandha Risang Aji

Institutions
Urban and Regional Planning UNISBA

Abstract
Environment is related to tourism as one of its components to maintain tourism sustainability. Eco-tourism is environment-based tourism that run by community to improve community capital which lived in its community. The community capitals that can be an input to community-based tourism which will practice the eco-tourism. This research aims to explain how the eco-tourism can be implemented through community-based tourism. The findings of this research are Pentingsari tourism village reach self-organisation through community-based tourism concept by using human and social capitals that the community have, Pentingsari tourism village reach self-sustainability through community-based tourism concept by using natural and cultural capitals, and from self-organisation and self-sustainability Pentingsari tourism village can provide eco-tourism to its tourists. This research concludes eco-tourism in Pentingsari village can be reached by using self-organisation and self-sustainability. Self-organisation and self-sustainability can be reached by using community capitals in community-based tourism concept.

Keywords
Eco-tourism, community-based tourism, sustainability

Topic
Environmental Engineering

Link: https://ifory.id/abstract/yBrGCpgWU627

Corresponding Author
Sahal Abdil Kadir

Institutions
Masters in Civil Engineering, Faculty of Civil Engineering, Syiah Kuala University
Jl. Sheikh Abdurauf No. 7, Kota Banda Aceh 23116, Indonesia
Tel: +62 811 6810 991 E-mail: sahal.abdil.kadir[at]gmail.com

Abstract
Aceh Besar is one of the areas prone to flash floods and landslides. On January 2, 2013 there was a flood and landslide at Tebing Krueng Teungku in Seulimum District. The collapse of a slope can be caused by an increase in the shear stress of the soil mass or a decrease in the shear strength of the soil mass to withstand the forces that are mobilized due to the soil mass and the presence of external loads. Based on these problems, we need an analysis that can provide solutions to slope problems by repairing or strengthening. Calculations were performed using the Geo Slope/W Program and Simplified Bishop Method on the Krueng Teungku cliff at Points A-01, B-02, and C-03. In the calculation phase of the Geo Slope/W Program, the Safety Factor (SF) values are 1,087, 1,041 and 1,158. In the calculation using the Simplified Bishop Method the SF are obtained namely 1.033, 1.017, and 1.106 where these values do not meet the safety factor requirements of SF>1.25. Therefore it is necessary to make efforts to strengthen the slope to avoid landslides such as installing gabions or retaining walls in accordance with the conditions on the ground.

Keywords
Slope Stability, Safety Factor, Geo Slope/W, Simplified Bishop Method

Topic
Civil Engineering

Link: https://ifory.id/abstract/ayRJdW6tTnFr

Corresponding Author
Nita PA Hidayat

Institutions
1) Industrial Engineering, Bandung Islamic University, Jl. Taman Sari no 1 Bandung, Indonesia
* nita.ph[at]gmail.com
2) Industrial Engineering, Sahid University of Surakarta, Jl. Adi Sucipto no 154 Solo, Indonesia
3) Industrial Engineering, Bandung Institute of Technology, Jl. Ganesha Bandung, Indonesia

Abstract
This research is to address a problem of scheduling batches consisting of multiple item parts processed on a batch processor where each item requires a certain processing time which may differ from others. A number of parts are defined as a batch and processed simultaneously with sharing a set up time. A batch can be formed of the parts with different type of item and the processing time of batch equals the longest processing time of parts in the batch. It is assumed that an excessive duration of processing the parts will not lead to any defect, but increase the operating cost. The completed part must simultaneously be delivered at common due date, d. The objective is to minimise total actual flowtime of parts through the shop. An algorithm to solve the problem is proposed and numerical examples are shown.

Keywords
Batch Scheduling, Batch processor, Actual Flow Time

Topic
Industrial Engineering

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

Corresponding Author
Sri Wuryanti

Institutions
Politeknik Negeri Bandung

Abstract
Geothermal is one of the most significant natural resource potentials in Indonesia. One power plant that utilizes geothermal steam as its energy source is PLTP. Geothermal steam that has passed through the geothermal power plant separator to move the turbine while the residual waste (brine) with a high enough temperature has the potential to be a source of heating to produce electrical energy in the Kalina cycle generator. The Kalina Cycle is one of the brine utilization cycles that uses a mixture of two working fluids in the form of an ammonia-water mixture. Using brine, before entering the turbine, it must first become airtight in the evaporator. The design of the evaporator must be such that it meets the operative requirements namely the pressure drop value and the dirt factor. Different variations of brine rate will produce different pressure drops and soil factors. Brine rate variations are 80 tons/hour, 120 tons/hour, 160 tons/hour, 200 tons/hour and 240 tons/hour show the lowest pressure drop of 0.086 bar and the most massive 0.63 bar, and the smallest dirt factor is 1.47 × 10 -6 ((hr)(m^2)^oC)/Joule moreover, the largest is 2.69 × 10-6 ((hr)(m^(2)^o C)/Joule.

Keywords
brine, generator, electrical, evaporator, steam, turbin.

Topic
Chemical Engineering

Link: https://ifory.id/abstract/ytgY3U8aPTLG

Corresponding Author
Tukiran. Surbakti

Institutions
Center for Nuclear Reactor Technology and Safety, BATAN,
Kawasan PUSPIPTEK Gd. No. 80 Serpong, Tangerang Selatan, 15310 Indonesia

Abstract
Indonesia has three research reactors which already old. So it is necessary to design new reactor core which is a compact core design, MTR type, utilizing low enriched uranium molybdenum dispersion fuel of high density. Optimization of neutron fluxes in irradiation positions is of great concern in research reactor design. The general approach used at the MTR reactor core for neutron flux optimization in irradiation position is presented. The approach is essentially based upon a optimization of the core configuration combined with the improvement of fuel characteristics. This simulation study was conducted by employing the standard reactor physics simulation codes WIMSD-5B and BATAN-FUEL. The present study is to analyze the effect of core configuration with the safety control rods and neutronic parameter by calculation using diffusion code. The MTR core consists of 16 fuel elements and 4 control rods put in 5 x 5 position of grids plate and by loading reflector elements outside the core. The aim of this research is to get the optimal design such as the highest neutron fluxes at the central flux trap position and also at irradiation positions in the core. Fuel cycle length of this core also becomes a concern, it is not less than 20 days and this core can be operated safely at the power of 50 MW. The result of calculation showed that for the lowest loading of fuel namely 450 gram of U7Mo/Al fuel with D2O as a reflector would provide higher neutron flux in center irradiation position of the MTR core namely 1.072 x1015 n/cm2s. Fuel cycle length of this core will reach 21 days, it meets the acceptance criteria and it will require less negative reactivity of control rods for its safe operation at 50 MW compare to other density

Keywords
Neutron flux, MTR reserach reactor , U7Mo/Al fuel, WIMSD-5B code , BATAN-FUEL code

Topic
Basic Science in Engineering Education

Link: https://ifory.id/abstract/2B9FGtManK3z

Corresponding Author
Thina Ardliana

Institutions
a) Shipbuilding Institute of Polytechnic Surabaya (PPNS);
Doctoral Student at Industrial Engineering Department,
Sepuluh Nopember Institute of Technology (ITS)
Surabaya, Indonesia
*ardlianathina[at]gmail.com, thina.ardliana[at]ppns.ac.id
b) Industrial Engineering Department, Sepuluh Nopember Institute of Technology (ITS)
c) Industrial Engineering Department, Sepuluh Nopember Institute of Technology (ITS)

Abstract
Nowadays, the climate change has resulted in extreme weather events. This change happens because of the effect of global warming. One of the main factors is the carbon emissions that have exceeded the permitted limits. Many countries in the world have taken a significant action by making some commitments to fix it. One of the commitments is to give a penalty for the cost of emissions produced by a country or company. In this study, we developed an integration model between inventory and multimodal land transportation by focusing on the costs of emissions produced. To distribute products from several suppliers to several consumers, we proposed train as long distance transportation mode and truck as short distance transportation mode. The purpose of this study is to find the best solution for total system costs. The total cost consists of operational costs and emissions costs. From numerical experiments, the carbon tax rate affects the amount of carbon emissions and the total cost. The trade-off between emissions and costs will produce an optimal solution. In addition, it can be seen the impact of tax to the other decision variables such as inventory and transportation. The method used in finding the optimal condition is Mixed Integer Linear Programming.

Keywords
carbon tax; land multimodal; integration; inventory

Topic
Industrial Engineering

Link: https://ifory.id/abstract/YVGeyj2c3gEJ

Corresponding Author
Lely Syiddatul Akliyah

Institutions
(a),(b) Urban and Regional Planning Program Study, Faculty of Engineering, Universitas Islam Bandung
Jalan Tamansari No. 1 Bandung

Abstract
Bandung City has many thematic parks spread across several districts. One of them is Taman Lansia (Elderly Garden). Although according to Bandung City Government that parks are intended for all age groups, there should be a target for visitors based on different age groups in each park based on the theme. The elderly have physical and psychological limitations that cause the elderly community to have special needs that are different from the productive and pre-productive age communities (Cooper & Francis, 1998), so special facilities are needed for the elderly in Bandung. Based on observation, existing facilities in Taman Lansia have not been able cover the needs of the elderly.So that, the purpose of the study are identify visitor characteristics and analyzing the needs of the facilities needed at Taman Lansia according to the characteristics of the elderly. The data collection methods are observation, questionnaires, and interviews. It used descriptive analysis. This study indicate that Taman Lansia visitors are dominated by elderly residents. There are several types of facilities that have not been provided in accordance with the characteristics of the elderly such as ramp handrails. The available facilities do not consider the characteristics and needs of the elderly.

Keywords
Facilities Needs, Taman Lansia, Elderly, Bandung City

Topic
Environmental Engineering

Link: https://ifory.id/abstract/xgEmQVfj4ube

Corresponding Author
Rina Harimurti

Institutions
Universitas Negeri Surabaya

Abstract
This study aims to determine what factors influence the skills of students designing interfaces. The variables that are predicted to influence these skills are motivation and initial ability which will affect cognitive abilities and interface design skills. Quantitative research with a sample of 39 students. The method of data analysis using Path Analysis is to analyze the cause and effect relationships that occur in multiple regression. The results of the analysis using the Amos SPSS Program, Chi Square = 0.236, df = 1 with a probability level (p) = 0.627. Because p> 0.05, the results of the analysis model do not differ significantly from the data (model fit according to data). The estimated value between the initial ability variables with the interface design is 0.912 can be said to be very strong with a value of Betta = 0.912 The analysis model described is appropriate to represent the relationship of each variable. Estimated values indicate that there is a fairly strong direct effect between 2 variables. it is possible that there are other independent variables which have not been observed to have a large influence on the creation of interface designs.

Keywords
motivation, initial abilities, cognitive abilities, interface design

Topic
Computers, Internet, Multimedia in Engineering Education

Link: https://ifory.id/abstract/UeZ8TAfVaPy3

Corresponding Author
Ernady Syaodih

Institutions
Universitas Islam Bandung

Abstract
Sustainable development goals no. 10 mentioned the need for reduced inequalities in disability. However, this equality in urban public spaces is not yet optimal. Public space is not yet sufficient in providing facilities for persons with disabilities. The purpose of this research is to measure the performance of public spaces based on perceptions of persons with disabilities. The approach method uses Importance performance analysis (IPA). Based on the results of surveys and IPA calculations, the performance of public spaces according to disabilities is generally not in accordance with their expectations. The performance components of public space ranged from 41.28% to 95% of the expectations of people with disabilities. Based on these results, better efforts from the city government and the community are needed to develop more disability-friendly public spaces.

Keywords
Disability, Performance, Public Spaces

Topic
Architecture

Link: https://ifory.id/abstract/GA4V2B9aNFKU

Corresponding Author
Asniwaty

Institutions
Universitas Pendidikan Indonesia

Abstract
The gap in laboratory facilities between tertiary institutions and vocational high schools can hinder the process of learning good practices conducted by teachers and students. The challenge for schools to achieve vocational education goals is to provide adequate laboratory facilities. The purpose of this paper is to first determine the conditions and availability of automotive practice laboratory facilities in vocational high schools and vocational education colleges. Second, knowing the gap between the automotive practice laboratory facilities in vocational high schools and vocational technology education colleges, especially in workshop equipment and special service tools (SST). Data collection was carried out at two public vocational high schools and one public tertiary institution in West Java, using a checklist and interviews with the head of the workshop and head of the vocational high school study program, interviews were also conducted with the head of the automotive college laboratory workshop. This study concludes that the gap in practice laboratory facilities between vocational high schools and vocational technology education colleges can occur in terms of the number and condition of practical tools, while the age of a tool does not affect the practical learning process as long as the tool is still suitable for use.

Keywords
Gaps, automotive laboratories

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/LWDn76ja4cfX

Corresponding Author
Firda Wati

Institutions
Universitas Pendidikan Indonesia ( UPI)

Abstract
The view of the school towards the website do not support, because seen from dapodik and website of each vocational hign school that has been made on the website only contains the school profile, school achievements, school documentation and location as well as majors available for the business world or industrial world. While websites on industrial work practices are not directly from the industry to schools about students who practice students go to the business world or industry in accordance with their respective fields. So that vocational hign school are able to make decisions for students who already practice or who will undertake industrial work practices. So that there is progress in the area of expertise of each students who will come both students personally and for schools in general in developing the ability of industrial work practices.

Keywords
information, website and dapodik availability.

Topic
Technical and Vocational Education

Link: https://ifory.id/abstract/bTr4PLgy7NHW

Corresponding Author
Gita Indah Gita Indah

Institutions
Department of Chemical Engineering, Faculty of Industrial Technology, Universitas Ahmad Dahlan, Yogyakarta, 55191 Indonesia

Abstract
Potato may be used as a substitute to wheat which cannot be grown in the tropics. However, potato flour has characteristic physicochemical limitation compared with wheat flour. This study examined whether hydrogen-rich water can improve the physicochemical characteristic of potato flour as a substitute for wheat flour. We used a variation of soaking time in hydrogen-rich water (1,2,3,4 hours) and drying method (oven and UV). We found, physicochemical characteristic (water content, swelling power, and reducing sugars) better than wheat if soaked for 3 hours with UV drying method. So, modified potato flour using hydrogen-rich water can be considered as a substitute for wheat.

Keywords
wheat, swelling power, reducing sugars, soaking time, drying method

Topic
Chemical Engineering

Link: https://ifory.id/abstract/M7uyrAJhcNCm

Corresponding Author
Pandu Rama Satria Putranata

Institutions
Department of Computer Engineering,
Faculty of Electrical Enginnering
Telkom University
Bandung, Indonesia

Abstract
The use of Vehicle Data Recorder in automotif vehilce have become the norm, Vehilce such as Police car and ambulance are usually outfitted with a Vehicle Data Recorder device that has more accuracy and more detail, this device is used to monitor the vehicle, but in a case where the data cannot be recovered because a malfunction or an acciddent happen then data has a risk of damage which the data cannot be recovered. To fix this problem where the Data cannot be recovered, the writer has design and made a Prototype Navigation System as a long range Vehicle Data Recorder based on a onboard Vehicle Data Recorder that-s been installed on a car. In this system the Vehicle Data Recorder will send its data to a Server that will store it-s data, so the Data can be used in another time, this Data then can be called to a Computer Program to monitor the vehicle condition. In order to monitor the vehilce remotely the vehicle is installed with GPRS for sending data, in monitoring the vehicle a program that will receive the data that-s been sent, the program will show the condition of the vehicle in tabular form and to show the vehilce position then a map is made on the program so that the user can monitor the condition of the vehicle As for the System test, the system will be test with a simulated condition using a dummy data based on a moving car with a predetermined route to show the system performance

Keywords
Vehicle monitoring

Topic
Computer and Communication Engineering

Link: https://ifory.id/abstract/XN7pcHkDVraQ

Corresponding Author
Parulian Sibuea

Institutions
lian.sibuea[at]yahoo.com
Universitas Negeri Medan

Abstract
The objectives of this research was to determine the effect of learning strategies (Contextual Teaching learning (CTL) and expository learning) and locus of control on learning outcomes, after controlling prior knowledge. This research conducted at Air Putih 1 High School, North Sumatera during August to October 2016, and used a quasi-experimental method with a 2x2 factorial. The participants were 48 students were devided into two treatment classes. Data analysis was Analysis of covariate (ANCOVA) with significance level 0,05. The result indicate that, (1) students learning outcomes who uses contextual learning strategy is better than expository learning after controlling prior knowledge, (2) there was an interaction effect between learning strategy and locus of control after controlling prior knowledge, (3) students who have a more precise of internal locus of control is taught with contextual learning strategy after controlling prior knowledge,(4) expository learning strategy more effective for students who have external locus of control after controlling prior knowledge.

Keywords
knowledge, CTL

Topic
Curriculum, Research and Development

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

Corresponding Author
Siti Balqis Zulfigar

Institutions
Bioprocess Technology Division, School of Industrial Technology, Universiti Sains
Malaysia, 11800 USM, Penang, Malaysia

Abstract
Breadfruit is recognized as a plant with the potential to be cultivated as an alternative staple food due to its high starch content and envisioned as a solution to mitigate hunger. The plant bears abundant fruits throughout the year with its productivity is comparable to other staple crops and thrives well in countries where the poor population is high. Breadfruit however, exudes copious amount of latex upon harvesting and the stained epicarp often perceived as low in quality. Standardized methods of harvesting in plantations include a stage of latex draining by inverting the fruit for several hours. The latex will be drained to the ground and considered as an agricultural waste with no current commercial application. Despite being considered as a nuisance, plant latex is rich in proteases functioned as a form of protection against pathogenic attacks. In the effort to identify its potential, the breadfruit latex protease was purified to an apparent homogeneity and its optimal conditions were determined. The stability of the protease was investigated and thermodynamic parameters were estimated in this research. Therefore, these analyses had revealed that breadfruit latex consists of protease with highly stable properties, potentially developed as an alternative commercial protease.

Keywords
Artocarpus altilis, latex, serine protease

Topic
Agriculture Engineering and Biotechnology

Link: https://ifory.id/abstract/wYKAuBn4fhz8

Corresponding Author
Lisa Erfa

Institutions
Politeknik Negeri Lampung
Jl. Soekarno Hatta No 10 Rajabasa Bandar Lampung

Abstract
The length of time needed to produce orchids both in the laboratory and to produce mature flowering plants is an obstacle in the development of orchids. Generally, it takes a long time to get the first flowers from plants that are propagated. This study aims: 1) to determine whether BAP growth regulators can stimulate flowering and growth of Phalaenopsis orchid plants, 2) whether the influence of BAP zpt depends on air temperature, 3) get the best concentration to stimulate flowering and plant growth. The research was carried out at the Lampung State Polytechnic net house from June to August 2019. The research was a factorial experiment in a completely randomized design. As factor I is BAP concentration (0, 50,100,150, 200 mg / l) and factor II is night air temperature (26 / 180C and 32/260 C). There were 10 treatment combinations were tried, with 5 replications. Observed variables include data analyzed by analysis of variance, then followed by a 5% LSD test. The results showed: From the results of this study the following conclusions can be drawn: 1) BAP concentrations can significantly stimulate flowering (spike emergence) & height growth of Phalaenopsis orchid seedlings, and significantly affect leaf length and number of leaves; 2) The effect of BAP concentration interacts/depends on air temperature; 3) The number of spikes per plant is markedly better / more formed at normal temperatures. At normal temperatures, a good concentration of BAP in producing spikes is 100 mg / l, whereas at low temperatures the amount of spike is most when given the addition of BAP 50 mg / l; and 4) At normal temperature the BAP concentration that is good for seedling growth (seedling height, leaf length, leaf width, and number of leaves) is 100 mg / l, whereas at low temperatures BAP concentration is good for seedling growth (seedling height, leaf width, and the number of leaves) is 50 mg / l.

Keywords
BAP, temperature, Phalaeonopsis orchid

Topic
Agriculture Engineering and Biotechnology

Link: https://ifory.id/abstract/wxLNcY8qAV9T

Corresponding Author
Ujang Suryadi

Institutions
1)Dosen Pascasarjana Politeknik Negeri Jember
2)Mahasiswa Pascasarjana Politeknik Negeri Jember
e-mail: 1)usurpoltek[at]yahoo.com

Abstract
The purpose of research was nalysis of KUB position compared by joper, male layer, broiler, and arab. The research had done in twenty subdistrict, Jember Regency. Research method was used by snowball sampling. Data analysis for knowing KUB position compared by joper, male layer, broiler, and arab was Multi Dimensional Scaling (MDS) based yang product quality(X1) dan business eficiency (X2). Knowing cometitivenes used PAM matrix. The resul of analysis showed the comodity had similiraty by KUB was joper. Postioning map showed joper had near position with KUB. Result of coefficient competitiveness PAM matrix showed KUB had highest coefficient than joper and arab but lower than broiler and male layer.

Keywords
positioning map, presepsiperception, farmers, competitiveness, Jember

Topic
Agroindustry and Agribusiness

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

Corresponding Author
Rosma Ahmad

Institutions
Bioprocess Technology Division, School of Industrial Technology, Universiti Sains
Malaysia, 11800 USM, Penang, Malaysia

Abstract
Oligosaccharides are a group of sugar polymers with degree of polymerisation of 2 to 10 monosaccharides linked by glycosidic bonds. Oligosaccharides are grouped according to their monomer components and linkages; fructooligosaccharides, maltooligosaccharides, xylooligosaccharides, galactooligosaccharides and etc. Plant oligosaccharides are found naturally in some fruits and vegetables but certain oligosaccharides such as xylooligosaccharides can be industrially manufactured from agricultural byproducts. Oligosaccharides that cannot be digested by human digestive system but selectively fermented in the colon had been proven to be a prebiotic ingredient. The addition of prebiotic oligosaccharides to food enhances functional properties beneficial for the body including bowel function, calcium absorption and lipid metabolism, prevention of dental caries, protection against cardiovascular disease and decrease in the risk of colon cancer due to the formation of short-chain fatty acids. The global xylooligosaccharides market is valued at 88.09 million USD in 2016 and is expected to reach 119.62 million USD by the end of 2022. Due to global demand of xylooligosaccharides and availability of agricultural byproducts from oil palm plantation and palm oil industry, Malaysia and Indonesia should play important role as manufacturers of xylooligosaccharides.

Keywords
digestive, health, oligosaccharides, plant, prebiotic,

Topic
Food Science and Technology

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

Corresponding Author
Lolita Udin Riestanti

Institutions
IPB University

Abstract
Prill fat is a non-hydrogenated vegetable oil and contains more than 85% palmitic acid with high melting point. Due to this reason it does not melt at rumen temperature and bypass rumen degradation. This research was to measure the characteristic of fat high in palmitic fatty acid by its utilization in ruminant. This research held in the Laboratory of Dairy Science, Faculty of Animal Science, IPB University. This research used Randomized Block Design with 4 treatment and 4 replication: P1 (control without treatment), P2 (control + 2% of high palmitic acid fat 78%), P3 (control + 2% of high palmitic acid fat 86%), P4 (control + 2% of high palmitic acid fat 96%). The variables observed included rumen fermentation characteristics (volatile fatty acid/VFA and NH3 concentration), dry matter and organic matter digestibility. Data obtained were analyzed using Analysis of Variance (ANOVA) and the significant different among treatments were further tested using Duncan. The result showed prill fat supplementation was significantly affected the total VFA concentration (P<0.01) and dry matter digestibility (P<0.05). Supplementation of prill fat had no effect on NH3 concentration and organic matter digestibility. Duncan test show that prill fat supplementation of 96% palmitic acid at 2% level increased VFA concentration and dry matter digestibility in ruminant. It was concluded that prill fat supplementation of 96% palmitic acid can be used to augment the VFA production and ruminal digestibility at the level of 2%.

Keywords
palmitic acid, prill fat, ruminal digestibility, VFA production

Topic
Animal Nutrition, Animal Production, and Veterinary Science

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

Corresponding Author
Ferziana ferziana

Institutions
Politeknik Negeri Lampung

Abstract
Growing media is one of the important factors that determine the success of the acclimatization of plantlets from in vitro culture. Several media combinations were tried in this study with the aim of 1) Knowing the effect of media combinations on the success of plantlet acclimatization and seedling growth at the enlargement stage, 2) Getting the best media combination for the successful acclimation and enlargement of banana seedlings, and 3) Seeing the possible use of media husk in acclimatization and enlargement of banana seedlings as a result of tissue culture. The study was conducted at the Lampung State Polytechnic net home from May to August 2019. The research was carried out in a Randomized Block Design. Six media combinations were tried, namely: P1: Topsoil + Husk (1: 1); P2: Top Soil + husk (1: 2); P3: Topsoil + husk charcoal (1: 1); P4: Topsoil + Husk charcoal (1: 2); P5: Top Soil + compost (1: 1); P6: Topsoil + compost (1: 2). In acclimatization (planting until the plantlet is 4 weeks old) each treatment planted 30 plantlets, each with 5 replications, while on the enlargement of the seeds each treatment was tried with 15 replications. Observed variables included: Seed height, leaf width, number of leaves, and wet weight. Data were analyzed by analysis of variance and continued with the BNJ test at a 5% level. The results showed: 1) the combination treatment of media had no effect on the percentage of plantlets that grew, and the growth of the number of seedling leaves at the enlargement stage, but markedly affected the growth of seedling height, leaf width, and seedling wet weight, 2) the best combination of media for success plantlet acclimatization and seedling growth rate (seedling height and wet weight) at the enlargement stage are P5 media (Topsoil + 1: 1 compost), then followed by P6 media (Topsoil + Compost 1: 2), and 3). Use of husk media for additional acclimatization media, it can still be used with the success rate of plantlets still reaching 70%, but it is not good to be used at the stage of seedling enlargement until it is ready for planting into the field.

Keywords
acclimatization, cavendish banana, seedling

Topic
Agriculture Engineering and Biotechnology

Link: https://ifory.id/abstract/DzrFnj9ce2EU

Corresponding Author
Lukman Prayitno Prayitno

Institutions
1Pusat Penelitian dan Pengembangan Humaniora dan Manajemen Kesehatan, Kemenkes RI, Jakarta, Indonesia, 2Pusat Penelitian dan Pengembangan Sumber Daya dan Pelayanan Kesehatan, Kemenkes RI, Jakarta, Indonesia

Abstract
Abstract Introduction: The use of antibiotics needs to be monitored. Its irrational use causes antibiotic resistance. Research needs to be done that aims to determine trends in antibiotic use. Methods: Observational research with retrospective data collection. Cross sectional research design. Data in the form of availability of antibiotics during the period 2014 - 2017 in hospitals, health offices and health centers in the city of Manado. Results: The trend of the use of antibiotics in the first level of health facilities in 2014 - 2017 in the city of Manado was the antibiotics of betalactam, macrolide, sulfamethoxazole-trimethoprim, quinolone groups. Trends in second-grade health facilities are the betalactam antibiotics, sulfamethoxazole-trimethoprim and quinolones. Trend in third-level health facilities are betalactam antibiotics, quinolones and others. Conclusion: Based on the data of 5 major antibiotic use in level 1, 2 and 3 health facilities, there was a change in the pattern of antibiotic use and this pattern tended to increase.

Keywords
Antibiotic Trends, JKN, Health Facilities

Topic
Logistic and Medicine

Link: https://ifory.id/abstract/qGUrfzYD92Nj

Corresponding Author
Mr Suprijanto

Institutions
a). Faculty of Industrial Technology, Institut Teknologi Bandung (ITB)
Jalan Ganesha No. 10 Bandung 40132 Indonesia
b). School of Life Sciences and Technology, Institut Teknologi Bandung (ITB)
Jalan Ganesha No. 10 Bandung 40132 Indonesia
e-mail: supri[at]tf.itb.ac.id, lfitri[at]sith.itb.ac.id

Abstract
Basic exercises of repetitive movement forearm in the long term can form a pattern of muscle activity. This exercise is often used as part of rehabilitation therapy for people with lost basic forearm movement due to paralysis. In many cases of rehabilitation exercise, a specific procedure must be performed which is depend on the people condition. One of problems in repetitive exercise is the emergence of muscle fatigue. This condition must be prediction before a decrease in the capacity of the muscles to perform motor tasks on an ongoing basis. Surface Electromyography (sEMG) is a technique for measuring muscle activity that can be used to predict muscle fatigue. This study aims to determine the pattern of biceps brachii muscle activity and to find an indication of muscle fatigue in repetitive movements. The open device wireless sEMG was configured to support forearm rehabilitation exercise without limitation movement due to sEMG wiring problem. In this study three healthy narcotics were asked to take arm extension flexion exercises. The exercise consists of three sessions where each session is 4-minutes long with a 1-minute break between sessions. The sEMG signal is taken at the biceps brachii portion and customized signal processing scheme was used to determine the mean power frequency (MPF) of the signal as one of sEMG feature for the indication of muscle fatigue. The three volunteers show different patterns of muscle activity. Volunteer-1 shows an increasingly clear and accurate pattern of muscle contraction-relaxation, while Volunteer- 2 shows a pattern of contraction-relaxation that gets faster along with repetition of movement. Conversely, the pattern of contraction-relaxation in Volunteer-3 cannot be clearly distinguished. The analysis showed a tendency for MPF to decrease at the beginning and end of the exercise, as well as at the beginning and end of each session. Based on statistical tests, the decrease in MPF values that occurred at the beginning and end of each session of the three narcotics was not significantly different (p> 0.05). The decrease in MPF values that occurred at the beginning and end of the training of Volunteer-1 and 3 was significantly different (p <0.05), but in Volunteer-2 the decrease was not significantly different (p> 0.05). A decrease in MPF values indicates muscle fatigue which can be caused by several possible mechanisms of decreasing muscle cell sensitivity. From this study, it can be concluded that the pattern of muscle activity of each individual is different and the flexion extension of the arm extension repetitively indicates the presence of muscle fatigue.

Keywords
Biceps brachii, muscle fatigue, mean power frequency, repetitive movement, Surface Electromyography

Topic
Biomedical, Robotic and ICT engineering

Link: https://ifory.id/abstract/F3ftxgVN4jMR