Indonesia Conference Directory

Corresponding Author
Rickard Elsen

Institutions
Sekolah Tinggi Teknologi Garut

Abstract
Autograder is used to measure source code quality based on blackbox testing. It will compare source code execution result with existing test cases and generate grade based on comparation result. Autograder can be used in college to help lecturer to test students skill in programming. It can be applied in laboratory or online course so students can use it to test their skill. Most of autograder use centralized architecture which it just execute and grade only one request at a time so if students submit their code to test, it will create a long queue and can risk highly to cause timeout because of long queue and unexecuted request. In this paper, we propose to apply distributed architecture for autograder to reduce queue and lower the risk for unexecuted request that can cause error in grading.

Keywords
autograder, source code, distributed architecture

Topic
Computer Science

Link: https://ifory.id/abstract/3wmWbDc2ZHrE

Corresponding Author
Rickard Elsen

Institutions
Sekolah Tinggi Teknologi Garut

Abstract
Disaster Management System (DIMAS) is used to reduce risk caused by disaster by manage information about affected area by disaster. It also manage aids, volunteers, and refugees data to measure effect of disaster accurately. Most of DIMAS controlled by government and operated by verified volunteers to keep data integrity so it can be accounted for future purpose. In this paper, we propose to apply DIMAS to mobile environment because of advantages that can be utilized to simplify the usage of DIMAS like GPS integration, mobility aspect, real time data capturing, etc. At the result, we hope it can improve accuracy and speed of collecting data in affected area.

Keywords
disaster management system, mobile environment

Topic
Computer Science

Link: https://ifory.id/abstract/2TznF48HaXEm

Corresponding Author
Arasy Fahruddin

Institutions
a) Mechanical Engineering Department, Institut Teknologi Sepuluh Nopember (ITS), Jl. Raya ITS, Keputih, Sukolilo, 60111, Surabaya, Indonesia
*arasy.fahruddin[at]umsida.ac.id
b) Mechanical Engineering Department, Universitas Muhammadiyah Sidoarjo, Jl. Raya Gelam No.250, 61271, Sidoarjo, Indonesia
c) Chemical Engineering Department, Institut Teknologi Sepuluh Nopember (ITS), Jl. Raya ITS, Keputih, Sukolilo, 60111, Surabaya, Indonesia

Abstract
Leaf shape biometric design shows promising potential as a flow field to supply air reactants in Polymer Electrolyte Membrane Fuel Cell. However, studies that discuss the dimensions of biometric flow field in detail are rarely encountered. The channel width can affect the supply of reactants, the better the supply of reactants the better the cell performance can be achieved. In this study we investigated the effect of the mother channel width on the biometric flow field towards cell performance using numerical simulations. The model is composed of 9 layers with 25 cm2 of active area. The channel dimension is varied by considering Murray theory. Simulation results show that the optimal width of the mother channel can increase power density by up to 6% compared to other variations. This increase can be achieved due to a more uniform distribution of oxygen concentration.

Keywords
Mother channel width; Biometric flow field; Polymer electrolyte membrane fuel cell

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/ckJ8LEHX4wgx

Corresponding Author
rina kurniawati

Institutions
Department of Industry Engineering, Sekolah Tinggi Teknologi Garut, Jl. Mayor Syamsu No. 1 Garut 44151, Indonesia
*rinakurniawati[at]sttgarut.ac.id

Abstract
In Tofus micro and medium enterprises, there is one traditional activity that is conducted repeatedly, called the cutting process. This cutting process is done by using a kitchen knife which makes it not efficient and can cause fatigue for operators. In addition, there is also the possibility of different sizes of tofu pieces because there is no measuring tools to cut it. This is because operators just follow the mold flow on the tofu. This study is aimed to make a product plan for tofu cutting tools. The Analytical Hierarchy Process was used as a research method in this study. This method begins with conducting interviews regarding the choices in level 1, 2 and 3 actions to several respondents. The respondents must choose and give an assessment on a scale of 1 to 9. The result taken from a variety of alternative solutions, which is made based on requirements specifications, is that the product of the tofu cutting tool is selected with materials made of pine wood, strings, handles, naples, and naple bolts. Moreover, the product produced will have a size of 52 x 52 cm2. The product design is based on material and tool specifications to produce a simple design. This is made so that the tofu cutting tool is easy to use as well as low cost.

Keywords
Analytical Hierarchy Process; Micro and Medium Enterprises; Product Plan; Traditional Activity

Topic
Industry Engineering

Link: https://ifory.id/abstract/drfvZzL6Rcea

Corresponding Author
ida farida

Institutions
Sekolah Tinggi Teknologi Garut
Program Studi Teknik Sipil
Jl. Mayor Syamsu No 1 Jayaraga Tarogong kidul Garut Jawa Barat Indonesia

Abstract
The proportion of concrete material affects the strength of concrete. The innovation of a mixture of waste red bricks can be used in concrete. The research method used experiments in the laboratory with normal concrete compressive strength compared to the composition of the mixture of red brick waste in the proportion of 25% and 50% based on SNI. The research objective was to find out the limits of the proportion of the design strength of normal K-200 concrete and by adding red brick waste as a fine aggregate substitute. The results of the use test with 25% and 50% of red brick waste are able to achieve the strength of the plan with reference to a normal concrete comparison so that the material is feasible as a substitute material. The addition of 50% waste is able to reach K-200 but compared to an additional 25%, there is a decrease in strength at 7 days at 16.7%, age 14 days by 20%, and age 24 days at 36.8%. Recommendation for the limit of the proportion of adding red brick waste to 25%.

Keywords
age of concrete, fine aggregate, K-200, normal concrete, red brick, the strength of concrete

Topic
Civil Engineering

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

Corresponding Author
Ade Rukmana

Institutions
a) Electrical Engineering Departement, Universitas Garut
Jl. Raya Samarang 52A, Garut, Indonesia
*) ade77rukmana[at]gmail.com

Abstract
Collisions between train and roadway user in a level crossing in rural area are the most railway accidents. A warning device for the level crossing is required to avoid the accident between roadway users and the train in the level crossing. The system shall independent from the existing railway system so that no disruption on the traffic of the train. This paper present a level crossing devices system based on ultrasonic sensors and wireless communication. Master control will display the result of detection using buzzer alarm, warning lamp, and train passage direction. Train passage warning with direction help the roadway user to get better awareness of incoming train and eliminate assumption of train passage direction. Especially in double track railway in rural area, in case dual train enter the level crossing from left and right direction, the roadway users sometimes only aware on the first train passage and ignoring the second train and lead to the accident

Keywords
level crossing, ultrasonic, wireless, train passage, rural area

Topic
Electrical Engineering

Link: https://ifory.id/abstract/HPR2M8F4mKhY

Corresponding Author
Ieke Sartika Iriany

Institutions
Faculty of Social and Political Science Universitas Garut, ; Jl. Cimanuk No.285A Garut Indonesia
*ieke_sartika[at]fisip.uniga.ac.id

Abstract
The use of technology in household management is very important, because it can help accelerate domestic work, besides that, on average housewives have sophisticated mobile phones, but it is questionable whether all the features have been used, can it operate all household appliances according to instructions in manual, whether they can access actual information from the internet and can they use social media productively. The purpose of this study is to describe the phenomenon of behavior of technology users in household management, especially women who do not work. This research method uses a qualitative approach, with survey methods - descriptive. Data collection through interview techniques, observation and documentation studies. 19 Research informants are purposively determined. Analyze data through stages of reduction, display, analysis and conclusion. The results of the study show that the use of technology in household management can create efficiency for housewives, so that the roles of family members can run smoothly and it turns out they can mostly use technology to form a happy, safe and prosperous family. The implication of this study is that the use of technology has a positive impact on the implementation of the role of housewives in household management in Indonesia.

Keywords
technology, household management

Topic
Management Science

Link: https://ifory.id/abstract/r9MXJEpNzCga

Corresponding Author
Akhmad Fauzi Ikhsan

Institutions
Electrical Engineering Departement, Universitas Garut

Abstract
The problems in Electrical installation of a building will be more complex in line with the functions or operations applied in the building. On the other side, the needs of power supply are very important to the operation of the building. A problem that often arises is a difficulty to localize which point having disturbances in the power distribution system in the building. This research is trying to solve that problem by building a prototype system of monitoring and controlling of the electrical distribution system of the school buildings. In this research, the writer is utilizing the Arduino-based system availability, which is Freeware with the support of developer software and sensory and actuator modules that are available including their sources. For interactions between the user and the system, it is used Wonderware Intouch which is a commercial software with a student license. The result of this research is the system consisted of voltage sensor, electrical flows and electrical relays as well that has been applied and connected to arduino ATMEGA 2560. Furthermore, the system can be configured, monitored and controlled through software that can be carried out by a computer.

Keywords
Arduino, SCADA, OPC

Topic
Electrical Engineering

Link: https://ifory.id/abstract/8jcK6vt4YMkN

Corresponding Author
Amanda Amanda

Institutions
Ahmad Dahlan University

Abstract
At present there has been a paradigm shift in the guidance and counseling approach, namely from a traditional, remedial, clinical, and centered approach to counselors to a development and preventive oriented approach. One of the counselors creative efforts is to grow and build relationships with the counselee by implementing cross-cultural counseling services with problems that can be measured in terms of culture, ethnicity, and even gender. One form of the problem that currently often occurs is the low empathy. Empathy is the ability to put ourselves in others, that we understand how other people feel, and what causes their reactions without our emotions dissolved in the emotions of others. Efforts to increase student empathy that have been carried out by BK teachers have only been merely instructional which essentially only "attacks" the cognitive aspects of students. Therefore, a new counseling approach for life is needed in this 21st century, the tendency of cross-cultural insightful counseling. The cross-cultural approach is seen as the fourth force after a psychodynamic, behavioral and humanistic approach according to Paul Pedersen. Cross-cultural counseling involves counselors and counselees who come from different cultural backgrounds, and therefore the counseling process is very vulnerable to the occurrence of cultural biases on the part of the counselor which results in counseling not being effective.

Keywords
Cross Culture Counseling, Empathy

Topic
International Symposium on Social Sciences, Humanities, Education, and Religious Studies

Link: https://ifory.id/abstract/agPTtBhG43vN

Corresponding Author
Cepy Slamet

Institutions
[1,2] School of ICT, Asia e-University, Kuala Lumpur, Malaysia
[1,3] Department of Informatics, UIN Sunan Gunung Djati Bandung, Indonesia

Abstract
Theoretically, the process of improving organizational performance can be accelerated by information technology (IT). This paper aims to discuss a sharpened concept for improving the performance of an organization. Researchers use different perspectives in formulating the relationships of variables based on the levels of significances towards the value-added creations. These variables include the model and strategy of business, and innovation and deployment of technology. Since the organizational capability parameters change dynamically driven by the rapid of advancing technology, hence the previous paradigms regarding the mapping of variables to organizational performance need to be sharpened. In this paper, we expand presumption for analyzing that other variables such as competitive environment, competitive strategy, and competitive factors influence organizational performance. This study is conducted using an in-depth comparative investigation of existing literature involving some discussion of both Strategic Management of Information Technology (SMIT) framework and model as a piece of literature review in research work. Overall, this initiative is resulting in a proposed formulation of the business model, technological innovation, and strategic alignment as a conceptual framework of SMIT for organizational performance improvement.

Keywords
organizational performance; business model, technological innovation, strategic alignment, SMIT

Topic
Information Engineering

Link: https://ifory.id/abstract/khTzRf2U3tHp

Corresponding Author
Helfy Susilawati

Institutions
Electrical Engineering Departement, Universitas Garut

Abstract
Water discharge is a measure of the amount of water volume that can flow or be disposed in a place in one unit of time. The research goal is to calculate the amount of water discharge and the bill for every use of water that has been used by the customer. Monitoring the use of water discharge will use the IoT (Internet of Things), with a microcontroller as a processor or input and output processing of the sensor used. The sensor used in this plan is the water flow sensor using ESP8266 module through the Internet as a data communication between tool and software. The data transmitted is water discharge in each use of 10 liters. This research will use prototyping method to know about the use of water and the price that must be paid each month from customer-s phone. The form of application is web that is created for the admin (Server) and Android application for the customer. On the next process, this design can be directly applied for the use of calculation of discharge and the bill for local government.

Keywords
IoT, Microcontroller, Water Discharge

Topic
Electrical Engineering

Link: https://ifory.id/abstract/GPnTZf4NKDzm

Corresponding Author
Dida Farida Latipatul Hamdah

Institutions
Accounting Program, Faculty of Economics,
Universitas Garut
Jl. Raya Samarang 52 A Garut
Indonesia
*didafaridalh[at]uniga.ac.id

Abstract
Inventory is a very important asset, especially for trading companies. Therefore accounting information system must be applied so that inventory is avoided by things that are not expected by he company. The purpose of this research is to find how the influence of information system accounting an inventory of goods to internal control an inventory of goods in Retail Company. Methods used in research this is the method descriptive quantitative. Technique data collection use research literature (library research), interview, the questionnaire and documentation, while technique data processing was conducted using correlation analysis, simple regression analysis and coefficients determination.The research results show that the use of information system inventory accounting of goods in Retail Company are good and influential in significant impact on internal control an inventory of good. The appliation of a good accounting information system is able accurate inventory data at any time so that it can improve control of inventory.

Keywords
accounting information system, inventory

Topic
Information Engineering

Link: https://ifory.id/abstract/RZ86TJF7CYuX

Corresponding Author
Nunung Kurniasih

Institutions
(a)Department of Chemistry, Faculty of Sciences and Technology, Sunan Gunung Djati Islamic State University, Bandung 40614, Indonesia
(b)Department of Chemistry, Faculty of Mathematics and Natural Sciences,Universitas Padjadjaran, Jatinangor 45363, Indonesia
(c)Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy,Universitas Padjadjaran, Jatinangor 45363, Indonesia
(d)Central Laboratory of Universitas Padjadjaran, Jatinangor 45363, Indonesia
(e)School of Chemical Sciences, Universiti Sains Malaysia,11800 Minden, Penang, Malaysia
* Corresponding author: nunungkurniasih[at]uinsgd.ac.id

Abstract
Previous phytochemical studies from the Aglaia genus reported the presence of terpenoid compound. This research describe the isolation and structure elucidation of sesquiterpend compound from the stembark of Aglaia simplicifolia. Dried stembark of A. simplicifolia extracted with methanol and then partitioned with n-hexane, ethyl acetate, and n-butanol, respectively. The n-hexane extract then was separated and purified with chromatography techniques to obtain isolated compound. The chemical structure of isolated compound were elucidated by IR, NMR 1D, NMR 2D as well as mass spectra and by comparison with those previously reported spectra data. The compound identified as senecrassidiol.

Keywords
Aglaia simplicifolia, stembark, senecrassidiol.

Topic
Chemistry

Link: https://ifory.id/abstract/c2EvpJy6n4Fx

Corresponding Author
Nunung Kurniasih

Institutions
(a)Department of Chemistry, Faculty of Sciences and Technology, Sunan Gunung Djati Islamic State University, Bandung 40614, Indonesia
(b)Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jatinangor 45363, Indonesia
(c)Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Jatinangor 45363, Indonesia
(d)Central Laboratory of Universitas Padjadjaran, Jatinangor 45363, Indonesia
(e)School of Chemical Sciences, Universiti Sains Malaysia,11800 Minden, Penang, Malaysia
* Corresponding author: nunungkurniasih[at]uinsgd.ac.id

Abstract
Two steroid compounds, ergosterol peroxide (1) and stigmasterol (2) have been isolated from the stembark of Aglaia simplicifolia belong to Meliaceae family. The chemical structures of 1 and 2 were identified on the basis of spectroscopic evidence including UV, IR, NMR 1D, NMR 2D as well as mass spectra and by comparison with those previously reported spectra data. The cytotoxic effects against HeLa cervical cancer cell lines of the extracts and compounds were studied.

Keywords
Aglaia simplicifolia, steroid, HeLa cervical cancer cell lines.

Topic
Chemistry

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

Corresponding Author
Eri Satria

Institutions
Department of Informatics
Sekolah Tinggi Teknologi Garut
Jalan Mayor Syamsu no 1 Garut, Indonesia

Abstract
The existence and purpose of mosque is important in Islam. In mosque, there is some activities related to religius and social life. Although mosque identically used as center of religion activity, but there is some potencies can be utilized from mosque such as, economy, education, sosial, etc. The main idea of this research is to design an electronic catalog so people can map the information about mosque potencies. In this paper, we use rational Unified Process (RUP) for research staging and Unified Modelling Language (UML) as modeling tool. Result of this research is an electronic catalog application which can provide the mapping of information about mosque potencies and activities related to mosque accurately. We hope with this electronic calatog, people can be more aware to potencies, function, and impact of mosque to social life around it.

Keywords
Catalog, mosque, moslem, Islam

Topic
Computer Science

Link: https://ifory.id/abstract/jz2Pk7qrUAMZ

Corresponding Author
Riza Apriani

Institutions
a) Chemistry, Faculty of Mathematics and Natural Science, Universitas Garut
Jalan Jati No. 48B, Garut 44151, Indonesia
*aprianiriza[at]uniga.ac.id
b) Chemistry Department, Faculty of Mathematics and Natural Science, Universitas Padjadjaran
Jalan Raya Bandung-Sumedang Km. 21, Jatinangor 45363, Indonesia

Abstract
Cancer is a frightful disease and represents one of the biggest health-care issues for the human race and demands a proactive strategy for cure. Exploration of natural product containing anticancer agent provide a promising line for research on cancer. Moringa plant (Moringa oleifera) is one of the medicinal plants used in traditional medicine for the treatment of cancer. Several studies have reported that water and alcoholic leaves extracts of M. oleifera have anticancer activity in some cancer cell line, including HepG2 liver cancer cells, A549 lung cancer cells, Caco-2 colon cancer cells and MDA-MB-231 breast cancer cells, but study on T47D breast cancer cells has not reported yet. Therefore, this study was carried out to investigate the cytotoxic activity of ethyl acetat fraction of M. oleifera (EMO) on T47D cells by observing cell cycle profile. Cytotoxic activity was determined by MTT assay. Cell cycle analysis was performed using flow cytometry and cyclin D1 expression was analyzed using immunocytochemistry method. Based on preliminary MTT assay, T47D treated with EMO demonstrated a medium cytotoxic effect with an IC50 value of 135.312 ug/mL. Further assay indicated that EMO induced cell cycle arrest on G0/G1 phases. Immunocytochemistry assay showed that the EMO decreased expression of cyclin D1.

Keywords
Breast cancer, cell cycle, Moringa oleifera, T47D cell

Topic
Chemistry

Link: https://ifory.id/abstract/pfzYrkdue7XP

Corresponding Author
Maryati Puspitasari

Institutions
Universitas Garut

Abstract
Indigofera zollingeriana is a feed that has high crude fiber content so it is difficult to use for poultry feed. The fermentation process using fungus is expected to overcome this problem. The study aimed to determine the interaction between dose and fungi kinds, with the length of fermentation on the protein and crude fiber content of I. zollingeriana. Another goal is to determine the optimum conditions for fermenting I. zollingeriana. The method used a Completely Randomized Design (CRD) factorial pattern. The first factor consisted of 6 levels of the different fungi dosages, namely 0.1%, 0.2% and 0.3% Trichoderma harzianum; 0.1%, 0.2% and 0.3% Aspergillus niger. The second factor was four levels of the duration of fermentation: 24 hours, 48 hours, 72 hours and 96 hours. All treatments were repeated twice. The experimental data were tested by F test, then Duncans analysis was carried out. The results showed that there was an interaction between dose and fungi kinds with the length of fermentation. The optimal condition for fermenting I. zollingeriana with T. harzianum fungus was at a dose of 0.3% and 96 hours fermentation time. This treatment gave the increasing of protein content and reducing crude fiber content.

Keywords
Trichoderma harzianum

Topic
Biology

Link: https://ifory.id/abstract/FUYgqcvC9kQV

Corresponding Author
Tina Sri Sumartini

Institutions
Institut Pendidikan Indonesia Garut

Abstract
The quadratic function of the part of mathematics that is dynamic. This gives the meaning that drawing graphs of quadratic functions can use a variety of different ways. The purpose of this study is to find out various ways of presenting graphs of quadratic functions. The sample of this study took two respondents who had learned quadratic function material. The study was conducted qualitatively by analyzing the way the graphs of quadratic functions are presented. The results showed that the effectiveness of drawing quadratic functions is influenced by the ability to think creatively

Keywords
Quadratic Functions, Creative Thinking

Topic
Mathematics

Link: https://ifory.id/abstract/mhUy3wutMDLn

Corresponding Author
Atun Qowiyyah

Institutions
Department of Pharmacy,Faculty of Mathematic and Natural Science, UniversitasGarut

Abstract
Syzygium samarangense (Blume) Merr. & Perry was the lipase inhibitor that capable of inhibiting lipid absorption, so it assumes have a potency to be antiobesity agent. The aim of this study was to investigated the antiobesity effect of ethanol extract and various fractions of jambu air samarang leaves. The ethanol extracts were prepared by maceration method while fractination process was carried out using liquid-liquid extraction method. This study was conducted on Wistar female rats induced by high carbohydrate food for 45 days and MSG (Monosodium Glutamate) subcutaneous injection 2 g/kg body weight for 5 consecutive days followed by 14 days treatment. Induction with high carbohydrate food was continue during the treatment. Results showed that MSG and high carbohydrate food could induce obesity. The ethanol extract at a dose of 50 mg/kg bw; n-hexane and ethyl acetate fraction have antiobesity effect by inhibit body weight gain significantly different to positive control group (p <0.05). The biggest activity was shown by the n-hexane fraction. The ethanol extract; n-hexane and ethyl acetate fraction of jambu air samarang leaves did not have laxative and anorexic effect, also could not decrease fat deposition in liver organ and abdominal fat tissue

Keywords
Jambu air samarang, obesity, ethanol extract, n-hexane fraction

Topic
Pharmacology

Link: https://ifory.id/abstract/Ey9TGKAuaFq6

Corresponding Author
Jaja Kustija

Institutions
Universitas Pendidikan Indonesia

Abstract
Today condition in learning mechatronics subject, especially at Universitas Pendidikan Indonesia Departemen Pendidikan Teknik Elektro still uses learning object and software simulations. This still has not maximized students competency, which is required to be skilled in real engineering that will be applied both in the industry and in educational institutions. According to the Universitas Pendidikan Indonesia research master plan which establish its vision to be a Pioneer and Superior University in the field of education, then research on learning innovation is directed to aspects of learning, that is research on learning models, learning media, organizing learning implementation plans, organizing learning materials, and evaluation systems. Based on the above idea, the researcher propose to develop a learning media that is corresponding with the requirement of mechatronics subject in the competency based on applicative design mechatronics simulator. The method used in this research is quantitative method with research and development approach. The excellent research of the college with the title "Design Mechatronics Simulators to Improve the Quality of Student Learning On Mechatronics Subject" is a research needed to implement a design that to improve learning outcomes and students competency

Keywords
Simulator, Learning Media, Learning Outcomes

Topic
Electrical Engineering

Link: https://ifory.id/abstract/geCGYBtXuPN9

Corresponding Author
Lia Kamelia

Institutions
Faculty of Science and Technology
UIN Sunan Gunung Djati Bandung

Abstract
Sound wave technology or Sonic Bloom technology has long been applied to plants. Sound waves affected the plants at different frequencies, sound pressure levels, presentation periods, and distances from sound sources. The aim of this research is to determine the effect of sound technology exposure on certain frequencies on the beginning of shoot growth, plantlet height, leaf number, and stomata opening width . The experiment was conducted by comparing chrysanthemum plants exposed to quran recitation (Surah Al-Fatihah) at an average frequency of 1237.8 Hz for 2 hours for 8 Weeks After Culture (WAC). The results showed that murattal and media interactions occurred in planlet height after 4 WAC and leaf number after 8 WAC. The exposure of murattal had affected on plantlet height after 2 WAC. The treatment influenced the number of leaves after 4 WAC, and the number of roots after 6 WAC. In testing the opening of the stomata, the leaves that given murattal al-Fatihah treatment, having a stomata opening wider than the leaves that were not treated (control). This study is the beginning of research to find the right frequency to stimulate growth in plants.

Keywords
Chrysanthemum Sp.;Frequency;Growth;Quran recitation;

Topic
Biology

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

Corresponding Author
Eki Ahmad Zaki Hamidi

Institutions
(a) Electrical Engineering Department, UIN Sunan Gunung Djati Bandung
Jl. AH. Nasution 105 Bandung 40614 Indonesia
(b) LEN Industri
Jl. Soekarno Hatta 442 Bandung 40254, Indonesia

Abstract
Nowadays in Indonesia, 3D Radar has been developed to perform a vertical scanning that has multi-functional benefit in telecommunication industry and defense. As a common practice 3D radar system frequently used to measure the distance of an object like the aircraft. Therefore, the most important element in radar systems is the phase shifter that has main role to steering the beam and replace the rotator function. This final research will focus on the operation of simple Phase Shifter with concern on 2,9 GHz to 3,1 GHz radar frequency.

Keywords
Beam-steering, Microstrip, Phase Shifter.

Topic
Electrical Engineering

Link: https://ifory.id/abstract/uDxH2QLyfrpY

Corresponding Author
Zaenal Arifin

Institutions
University of Mataram

Abstract
Corn farmers on dry land tend to use inorganic fertilizers in excessive amounts to increase corn production without considering the right dosage and the application method. To obtain the right dosage and the better application method, a study has been conducted to investigate two packages of fertilizer doses and placement methods which were tested on dry land of Dompu, Indonesia. Research to test the three types of fertilizers (Nitrogen, Phosphorus and Potassium) in corn was tested in five sub-district locations in Dompu (1 ha in each location), namely Huu, Pajo, Woja, Kempo, and Manggalewa sub-districts. There were two fertilization packages tested in this study; (1) Urea 300 kg/ha and PONSKA 300 kg/ha given 2 times by row placement, and (2) Urea 300 kg/ha and PONSKA 400 kg/ha given 1 time by broadcasting. The results showed that the first package of treatment produced significantly higher dry weight of corn seeds (12.26 tons/ha) compared to the second package (7.98 tons/ha). In addition, the leaves of the corn plant in the first package treatment were still green at the time of harvest which can be a source of animal feed, compared to plants in the second fertilizing package that have dried and are brown in color.

Keywords
Corn, fertilizer, NPK, application, dryland, Indonesia

Topic
Environmental Engineering

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

Corresponding Author
Muhammad Rikza Nashrulloh

Institutions
Department of Informatics Engineering
Sekolah Tinggi Teknologi Garut

Abstract
Startup is becoming a trend in Indonesia. Various success stories from local startups such as Gojek, Tokopedia or Bukalapak, has become trigger for the emergence of new startups. The potential of internet users in Indonesia which is increasing from year to year is also a catalyst for establishing a startup. At an early stage, startup must identify user experience priorities and problems in developing software product phase. This chapter describes work in progress on a shortened version of Design Sprint approach, and its application to designing Software product in Startup. Google Ventures initially introduced Design Sprint to tackle critical business problems and come up with viable solutions within five days.

Keywords
Design Sprint, Design, UX, Software Development, Startup

Topic
Information Engineering

Link: https://ifory.id/abstract/KVPDfwEa7Ruy

Corresponding Author
Diah Mulhayatiah

Institutions
UIN Sunan Gunung Djati Bandung

Abstract
Development of learning media needs to be done to increase students interest in learning and stimulate teacher creativity in creating an interactive learning atmosphere. This study aims to develop teaching aids as an alternative to physics learning media in momentum material. The method used in this study is research and development with the stages of analysis, design, development, implementation and evaluation. The stage described in this study is the development stage in the laboratory test section. The laboratory test results for momentum props found that the relative error of the data obtained for the initial momentum was 0.1% and the final momentum ranged from 9%. The momentum props developed were able to present data and show momentum calculations through equations

Keywords
momentum, impuls, props

Topic
Physics

Link: https://ifory.id/abstract/7vQrUckR2y8C

Corresponding Author
Tedi Supriyadi

Institutions
Universitas Pendidikan Indonesia

Abstract
This research seeks to analyze the process of ICT-based Al-Quran phonology learning by using MTT Tahsin application. To Indonesian people, whose mother language is not Arabic, they need to learn the Al-Quran phonology to avoid letter sound interference in Al-Quran reading. The research method conducted the following stages: (1) search and download MTT Tahsin application; (2) explain the application features; (3) learn Al-Quran using the application; and (4) evaluate the learning process. The subjects of this research were students with Java culture background, consisting of 14 male students and nine female students of a university in Sumedang Regency. The findings are: (1) MTT Tahsin application was equipped with trans-literacy feature and explanation of hijaiyyah letters characteristics, hence, it assisted the students to comprehend the pronunciation; (2) The application is equipped with makhroj (place from which the sound of a letter originates) pronunciation with all marks, hence, it assisted the students to comprehend makhroj pronunciation; (3) The learning process could be done wherever and wherever; and (4) the evaluation of learning process showed that MTT Tahsin application could minimize the phonology interference in Al-Quran reading practices. To conclude, Al-Quran learning using MTT Tahsin application could improve phonology mastery for Java people.

Keywords
ICT, Al-Quran, Phonology, Learning

Topic
Computer Science

Link: https://ifory.id/abstract/NTFR8JMt6kG7

Corresponding Author
Mokhammad Syafaat

Institutions
State Polytechnic of Malang

Abstract
Controlling a differential drive robot balancing system is a challanging task since it is highly unstable, non-linear and under-actuated system. This paper proposes a PID controller algorithm to balance the a differential drive robot at upright position. The system model derived using lagrangian method is discussed. The resulting mathematical model of the proposed closed-loop system was simulated. To verify the system performances, the real time experiments have been conducted. An arduino uno and an MPU6050 were used as the main controller and the main sensor, respectively. The PID parameters were manually tuned until the desired performance was achieved. From the simulation and the real time experiment results, the proposed method has demonstrated its capability to stabilize robot at upright position.

Keywords
Robot balancing; Controller; Stabilize robot

Topic
Electronics Engineering

Link: https://ifory.id/abstract/npNUZErL6PXz

Corresponding Author
Afrizal Afrizal

Institutions
Departmen Chemistry of Universitas Negeri Jakarta

Abstract
Research and development of liquid crystal of cholesteryl acrylate growing up now. The aim of this research is to synthesis composites and polymerizations of cholesteryl acrylate with dopan of indium tin oxide (ITO). The blending process of cholesterol acrylate and ITO was performed using casting solution technique at 75&

Keywords
Cholesteryl acrylate, composite, photopolymerization, UV curing, characteristic and conductivity

Topic
Material Science

Link: https://ifory.id/abstract/Cbet8vBuKngP

Corresponding Author
Asep Suparman

Institutions
1) Institut Pendidikan Indonesia, Jl. Terusan Pahlawan No. 32, Garut, Jawa Barat 44151, Indonesia
*asep.suparman[at]institutpendidikan.ac.id
2) Universitas Pendidikan Indonesia, Jl. DR. Setiabudhi No. 229, Bandung, Jawa Barat 40154, Indonesia
3) Universitas Langlangbuana, Jl. Karapitan No. 116, Bandung, Jawa Barat 40261, Indonesia

Abstract
Speed, cost, and quality have been the central issues in the translation industry. While computers can offer fast and economical translation, their ability to produce accurate translation at a publishable level like human translators may do is still questionable. In the present study, we evaluate the accuracy of English to Indonesian translation generated by Google Translate. Freely accessible English texts of various types were chosen to heuristically exemplify the units of analysis. Our findings lead to a conclusion that while Google Neural Machine Translation system is quite an improvement to the conventional phrase-based translation system, highly accurate translation does not seem to be achieved by Google Translate in the near future.

Keywords
translation accuracy, machine translation, Google Translate, English to Indonesian

Topic
Computer Science

Link: https://ifory.id/abstract/FVPt7AENvDJ4

Corresponding Author
Prantasi Harmi Tjahjanti

Institutions
1 Department of Mechanical Engineering, Universitas Muhammadiyah Sidoarjo,
Kampus 2 Jalan Raya Gelam nomer 250 Candi Sidoarjo, Jawa Timur, Indonesia
2 Department of Mechanical Engineering, State University of Surabaya, Indonesia


*E-mail: prantasi[at]gmail.com prantasiharmi[at]umsida.ac.id

Abstract
Koma material is one part of a wire cutting machine that is in PT. X in Indonesia, which functions as a wire straightening device that will be processed or cut. This material is made from cast iron and is obtained from imports. Never tried to make local product. The aim of the research was to make Koma material from cast iron. The method used is to make Koma material such as imported products and then do hardness testing and observe the microstructure using optical microscope. The results are compared with Koma imported products. The results show that the coma material of imported products has a higher hardness than local products, because there are differences in chemical elements in the cast iron.

Keywords
Koma material, import product, local product, hardness, microstructure

Topic
Material Engineering

Link: https://ifory.id/abstract/gyEc8TetF73R