Indonesia Conference Directory

Corresponding Author
Mudjijana Mudjijana

Institutions
(a) Universitas Gadjah Mada
(b) Universitas Muhammadiyah Yogyakarta

Abstract
An ocean tol has been built in Indonesia. Thus, it is needed many ships to fulfill this programs. The marine ships are operated on sodium chloride (NaCl) environment, so that the ship materials have to be able to withstand the environments. The purpose of this study is to characterize the crack propagation of AA5083H116 and ER5356 electrode-welded materials under static loading in an environment containing 3.5 wt% of NaCl. This study was started with construction of the bending test equipment in accordance with the Brown and Beachem and ASTM E 1681. The IZOD notched specimens used in this test were prepared using electrical discharge machining (EDM) according to the ASTM E-23. The test was carried out at constant loading of 40 N with time variations. During the loading, the specimens were immersed in a 3.5 wt% of NaCl environment. The deflections and times during loading were then recorded and finally the specimens were fractured using liquid nitrogen. The crack lengths were measured by means of optical microscope in order to characterize the crack propagation vs stress intensity factor. The fracture surfaces of the specimens were examined using SEM-EDS to characterize their fractography and chemical elements. The results show that the crack propagation of welded materials of 10 mm/s speed travel was lower than the other and the fracture surface indicates intergranular fracture, while the chemical elements shows there are of Mg, Na, Cl elements on the fracture surface.

Keywords
Crack propagation, AA5083 H116, ER 5356, MIG welding, NaCl environment

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/gnvHt9ZWYpaB

Corresponding Author
Rinasa Agistya Anugrah

Institutions
Departement of Mechanical Engineering, Faculty of Vocational Program, Universitas Muhammadiyah Yogyakarta
Jalan Brawijaya Tamantirto Kasihan Bantul Yogyakarta 55183, Indonesia
rinasaanugrah[at]umy.ac.id

Abstract
Abundant resouce of coconut fiber in a small vilage in Kulon Progo, Kadigunung haven-t been used before this research. Even though it can be used to become raw material organic fertilizer for agriculture that most of the population member are making a living as a farmers. But there is a problem when processing to make the fertilizer, it is the use conventional maner to crush the coconut fiber. So needed appropriate technology, namely crushing machine. The design of crushing machine uses a drive gasoline engine with the power 5.5 HP and the spin is 2,000 rpm. The blades amount to 21 moved and 12 fixed blades. It was measured by digital tachometer and sound level meter. And the others analysis were doing by formula calculating. The results of this research invove fuel consumption, depreciation of raw coconut fiber, noise level, linier v-belt velocity, and rpm of the blade shaft. They were resulted 1,800 cc, 0.05 kg, 99.3 dB, 2π m/s, and 10,595 rpm. That can be infered in the of this crushing machine is good performance.

Keywords
Crushing Macnine; Coconut Fiber; Organic Fertilizer; Blades; Performance.

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/zahgJCMN8Q3d

Corresponding Author
Sularso Budilaksono

Institutions
(a) Informatics Department, University of Persada Indonesia YAI
Jalan Diponegoro 74 Jakarta
*sularso[at]upi-yai.ac.id
(b) Magister Ilmu Komputer, STMIK Nusa Mandiri
Jalan Kramat Raya 18 Jakarta
*jupriyanto.kahar[at]gmail.com
(c) Magister Ilmu Komputer, STMIK Nusa Mandiri
Jalan Kramat Raya 18 Jakarta
*14002190[at]nusamandiri.ac.id
(d) Informatics Department, University of Persada Indonesia YAI
Jalan Diponegoro 74 Jakarta
*suwarno[at]upi-yai.ac.id
(e) Informatics Department, University of Persada Indonesia YAI
Jalan Diponegoro 74 Jakarta
*agus.suwartane[at]gmail.com
(f) Magister Ilmu Komputer, STMIK Nusa Mandiri
Jalan Kramat Raya 18 Jakarta
*andriagu1603[at]nusamandiri.ac.id
(g) Teknik informatika, Universitas Muhammadiyah Tangeng
Jalan Perintis Kemerdekaan I No.1, Babakan, Kec. Tangerang, Kota Tangerang, Banten
*lukmanazhari85[at]gmail.com
(h) Teknik informatika, Universitas Muhammadiyah Tangeng
Jalan Perintis Kemerdekaan I No.1, Babakan, Kec. Tangerang, Kota Tangerang, Banten
*ac.fauzi25[at]yahoo.com
(i) Teknik informatika, Universitas Muhammadiyah Tangeng
Jalan Perintis Kemerdekaan I No.1, Babakan, Kec. Tangerang, Kota Tangerang, Banten
*mahpud18[at]gmail.com
(j) Sistem Informasi, Universitas Stikubank Semarang
Jl. Tri Lomba Juang no 1 Semarang
*novita_mariana[at]edu.unisbank.ac.id
(k) Manajemen, Universitas Persada Indonesia YAI
Jl. Diponegoro 74 Jakarta
*mayasyafriana[at]gmail.com

Abstract
Precision marketing is the companys ability to offer products specifically made to customers. This decision can give the company the ability to attract customers to always buy continuously. This study presents a trend model for accurately predicting monthly supply quantities / The method used in the first stage is the RFM (Recency, Frequency, Monetary) method for selecting attributes to group customers into different groups. The output of the first stage is clustered using the K-Means Algorithm. The output of clustering is then classified using the Decision Tree and compared with the K Nearest Neighbor method. The dataset that is processed is sales data from Syifamart As-Syifa Boarding School in Subang with 351,158 rows of data. The clustering process produces 4 optimal clusters. The four clusters are then classified using the Decision Tree algorithm to determine the potential and non-potential characteristics of each customer.

Keywords
Precision Marketing; Customer Profiling; RFM (Recency, Frequency, Monetary); K-Means Algorithm; Decision Tree Algorithm, K Nearest Neighbor Algorithm.

Topic
International Symposium of Engineering, Technology, and Health Sciences

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

Corresponding Author
Rizki Rizkyatul Basir Basir

Institutions
STMIK Nusa Mandiri Jakarta

Abstract
The increment of online-based transportation shows the desire of the society to find out cheap and fast alternative transportation as a response to the bad public transportation services provided by the government. This online transportation phenomenon has become popular quickly because it offers the latest innovations in transportation combined with online communication technology so that it makes it easy for people to order motorcycle taxi anywhere and anytime. By analyzing the sentiments of the people as road users, it is intended as a reference for the service units of the relevant government agencies to determine the level of public sentiment towards traffic congestion caused by online transportation so that it can be used as material for assessment and evaluation. In this study the writer conducted sentiment analysis on Twitter social media to determine the level of public sentiment towards congestion caused by Online-Based Transportation. The steps in conducting a sentiment analysis include preprocessing, extraction feature and classification. The making of the sentiment classification model uses two algorithms namely Support Vector Machine (SVM) and K-Nearest Neighbor. After testing the Support Vector Machine (SVM) algorithm has an accuracy value of 84.00% with AUC of 0.862, while the K-Nearest Neighbor (K-NN) algorithm has an accuracy of 80.00% with AUC of 0.740 with 250 sampling.

Keywords
Transportation based on online, traffic, Twitter, Support Vector Machine, K-Nearest Neighbor

Topic
International Symposium of Engineering, Technology, and Health Sciences

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

Corresponding Author
Erlina Sih Mahanani

Institutions
(a)Department of Dental Biomedic, School of Dentistry, Faculty of Medicine and Helath Science, Universitas Muhammadiyah Yogyakarta, Indonesia, Coresponding email: erlina.sih[at]umy.ac.id
(b)Dental Hospital, Faculty of Medicine and Heath Science, Universitas Muhammadiyah Yogyakarta, Indonesia

Abstract
Platelet rich plasma (PRP) and platelet rich fibrin (PRF) source from human blood and have play role in bone recovery. Both of them could be incorporated into scaffold. Synthetic coral scaffold is a mimicking from sea coral naturally that designed for bone regeneration. It should have biodegradability and bioabsorbability that influence in new bone formation process. Purpose of this study to investigate the swelling, degradation profile and gel fraction of scaffold that incorporated with PRP or PRF. Synthetic coral scaffold consist of gelatin, calcium carbonate, and sodium nitric as dispersant, divided into 3 group, incorporated PRP, PRF, and No. incorporation. Scaffold was soaked in phosphate buffer saline and incubated in 37 degree C. Scaffold weight was measured in every 30 minutes to observe the profile swelling and gel fraction. Degradation profile was observed after 1, 3, 6, 24, 48, 72, and 96 hours. Acceleration of degradation was measure after soaking with HC1 1N after 1, 3, 6, 24, 48, 72, 96 hours until the scaffold ran out. The result showed significant differences among PRP, PRF, and control group. PRP incorporation have a slow degradation, good swelling and higher gel fraction that presented the strengthen of scaffold structure.

Keywords
Synthetic coral scaffold, PRP, PRF, degradation, swelling.

Topic
International Symposium of Engineering, Technology, and Health Sciences

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

Corresponding Author
Bambang Guruh Irianto

Institutions
Jurusan Teknik Elektromedik Poltekkes Kemenkes Surabaya

Abstract
A Bedside monitor is an equipment used to monitor patients condition through some parameters that needs sustainable monitoring so that the patients condition is still monitored. Generally, there are several parameters in a Bedside monitor, i.e. Heart signal, Heart rate, respiration, body temperature, non invasiv blood pressure (NIBP), and SPO2. Heart signals can be used to detect patients heart condition such as: whether there is a heart attack or not, whether the heart is defected or not, whether the heart beat is normal or not, and whether the heart has received blood with sufficient oxigen. To help medical staffs and peramedics in hospitals in monitoring patients heart, previous research has been done entitled Design of Cardiograph Machine Based on Atmega Microcontrol (Sience & Irianto, 2016). However, it still has weaknesses. One of them is that the equipment can only monitor point to point heart signals, meaning that one ECG is only used to monitor one patient (not applying multipoint to point). Further, it is completed by creating Design of heart signal based on telemetry (Irianto, 2017). In the research, there are several ECG machines that function as monitor heart signal only. This research is development of previous research that is Design of bedside monitor based on microcontoller can be monitor 5 parameter such as Heart signal, Heart rate,Temperature, Respiration and SPO2. The design of this research applies quasi experimental design. The free variable is ECG phantom or human, and the dependent variable is bedside monitor. The research instruments are calibration equipments of ECG signal, temperature, and respiration. The result of heart signal lead 2 is not differened with the standard and the result of heart rate lead has uncertainty (Ua) 0 for Lead 2; which is still under the tolerance number (0,5). The result of temperature measurement of 5 samples with 5 measurements is 3 samples has deviation standard and uncertainty 0 (zero), whereas 2 samples has uncertainty 0,76 (higher than 0,5). This condition is influenced by patients movements, so the sensor attached on the patients body does not fit with the standard installation. The result of respiration measurement has accuracy 98 percentage, whereas the result of SPO2 after compared with standard calculation has deviation standard and uncertainty under 5 percentage that is STD 0,894427; 0,547723; 0,44; Ua 0,4; 0,244949; 0,2 and 0,2. Ovrall, it can be concluded that Desaign of bedside monitor based on microcontrol is feasible and the mesurement result of heart signal Lead 2, heart rate, temperature, respiration, SPO2 can be presented on PC.

Keywords
Heart signal, heart rate, temperature, respiration, SPO2. Bedside monitor

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/8zhWjDfqpm3E

Corresponding Author
Rela Adi Himarosa

Institutions
(a) Universitas Muhammadiyah Yogyakarta

Abstract
Handcycle is a transportation tool for individuals with lower limb disabilities. This study designed a hand cycle as a mode of transportation to facilitate the accessibility of persons with disabilities. The design of the handcycle will be designed on a prototype scale. It referred to recumbent and synchronous frame geometry types for arm crank set up to do finite element analysis studies using Autodesk Fusion 360 software to find the value of the strength of the handcycle frame design. Frame dimensions based on anthropometric data. Designed a decent frame at 160 kg loading with a critical value of 330 MPa and became a reference for the handcycle production process.

Keywords
handcycle, disability, frame analysis, FEA

Topic
International Symposium of Engineering, Technology, and Health Sciences

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

Corresponding Author
Suhartinah -

Institutions
Polytechnic of Astra Manufacturing
Jl. Gaya motor raya no.8 Sunter II. Jakarta (14330)

Abstract
In this paper, we design control systems that can control a servo motor on a spot welding machine. As controller, the PLC can control the rotary movement on the jig table. In this case, we design the control system, input and output cabling systems to and from the PLC. There is a request for change in the condenser model, so the spot welding machines are designed and made specifically to be used to perform three times welding process on new type condenser parts. From the testing and result, we find that the rotary table jig on the spot welding machine can move according to the required welding angle i.e. 17. It can do the welding process to reach the new condenser specifications.

Keywords
design control systems;jig rotary table;servo motor;spot welding machine;Programmable Logic Control

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/KR4pMqbTL9EV

Corresponding Author
Putri Yeni Aisyah

Institutions
a) Department of Engineering Physics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
*putriyeniaisyah[at]gmail.com
b)Department of Engineering Physics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia

Abstract
Wind energy has several advantages including unlimited energy production, can be used as an alternative step to save fossil energy and not cause pollution. The availability of the wind power plant (PLTB) system on onshore reaches 98%, but the required maintenance costs are still very high in the installed Wind Turbine Generator (WTG) system. Whereas, the availability of PLTB on offshore is reduced up to 60% due to the main cause is damage to several components in the WTG system. This study proposes the use of the bias fault estimation method of the WTG system component on a fault tolerant control (FTC) strategy. The advantage of this scheme is that the estimation of bias can be used as a reference to schedule maintenance of the WTG system. Bias estimation method is built using l0 norm constraint optimization. This estimation method has a simple structure because it only uses a single observer. Optimization formulation with l0 norm constraints is derived by applying a compressed sensing technique so that estimation of bias fault can be used to estimate all actuator and sensor components by a single observer. It answers the problem of observability in the case of using a single observer to estimate several errors with limited measurement variables (less than the number of errors estimated).The single observer model used is able to handle the nonlinearity of the wind turbine generator system, so that it can produce state and error estimates properly. The FTC system produces Settling Time and the Maximum Overshoot value is smaller than the conventional control system

Keywords
Compressed sensing, Bias Fault Estimation, Fault Tolerant Control, Wind Turbine Generator

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/WPJK62MFr9eq

Corresponding Author
Ramadoni Syahputra

Institutions
Department of Electrical Engineering, Universitas Muhammadiyah Yogyakarta, Indonesia
*ramadoni[at]umy.ac.id

Abstract
Electricity demands for industries, offices, and rural communities are increasing. This increase is not accompanied by the availability of electricity supply, especially in rural communities. The effort to find the new and renewable energy sources are an option that must be done immediately to overcome the problem of energy needs. Of the many renewable energy sources available, a very attractive option is micro-hydro energy and solar energy. The potential of these two renewables in Indonesia is very large. Combining solar and micro-hydro systems is a good combination for low load applications. The combination of this power plant is very suitable for areas where during the summer the river water flow tends to decrease while the suns heat is more reliable, and conversely in the rainy season the river water flow will increase while the suns energy falls to its lowest level. However, there are still obstacles in the use of these energy sources, namely the cost of distribution and installation is very expensive. Therefore, portable power plants are designed in this study, so that the costs of distribution and installation can be minimized. The designed hybrid power plants have been tested in Tamantirto, Bantul, Indonesia. The test results have shown that the hybrid power plant produces an output power of 170 watts.

Keywords
Solar energy, micro-hydro, hybrid, rural communities

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/UEWNR6ywJhmq

Corresponding Author
Dhitya Ovim Barkley Perdana

Institutions
Universitas Sebelas Maret Surakarta

Abstract
Information/ computer technology is currently experiencing rapid development. Jobs without using a computer will be difficult and require considerable time to complete. The use of information technology / computers increase productivity because various activities can be carried out quickly, and accurately. One of jobs that is quite difficult and takes a long time is designing of motorcycle friction plate clutch. The program was made by translating the plate coupling design procedure into the Delphi programming language. A design program was made by arranging interfaces according to clutch design requirements then giving orders (codes). Deviation or difference in results after cross-checking between manual calculations and program calculation is 0%. The friction plate clutch design program made by Borland Delphi 7 software can work well and calculation or design using the program is more effective than manual calculation because of the shorter time needed.

Keywords
Borland Delphi 7, Program, Clutch Design

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/JKQMEy8PLFmC

Corresponding Author
Agus Ponco Putro

Institutions
Politeknik Manufaktur Astra

Abstract
Abstract. In this paper, we design the power monitoring systems at the heavy equipment company. In a production process, the need for pressurized air supply in this company is quite large. In this case it is fulfilled by the operation of 2 compressor units. The compressor used has a working power of 90 KW, so that in its operation also requires a large electricity supply. In the list of company facilities, compressors are machines with the largest energy consumption. With regard to energy efficiency programs, the company plans to reduce energy use from each machine, especially compressors, while paying attention to existing production targets. In this research, the first step taken is by monitoring power usage. This is useful to find out whether the machine is working according to needs, or there are uses that are not to support existing production. For example, the machine turns on when it is not working hours, or there is a machine that is not in good condition. To facilitate this work, we design a compressor power usage monitoring system based on the microcontroller Arduino Mega 2560. In this system, the data taken is the working flow of the compressor using the ACS712 current sensor, which is then processed by Arduino so that the value of power usage is obtained. Next, data is sent via the ESP8266 Wi-Fi module to the database. The output of this system is the value of work flow and compressor working power in real time, along with the total value of power usage by the compressor displayed on a website. Through the site, data can be accessed by PCs or the hand phone that connected to the companys network. The measurement results of this system have a measurement accuracy of 98.48%.

Keywords
Arduino Mega 2560, Monitoring System, Machine Power Consumption, current sensor ACS712, Wifi Module ESP8266

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/37kZE8N2Tepy

Corresponding Author
Agus Ponco Putro

Institutions
Astra Manufacturing Polytechnic

Abstract
In this paper, we design the power monitoring systems at the heavy equipment company. In a production process, the need for pressurized air supply in this company is quite large. In this case it is fulfilled by the operation of 2 compressor units. The compressor used has a working power of 90 KW, so that in its operation also requires a large electricity supply. In the list of company facilities, compressors are machines with the largest energy consumption. With regard to energy efficiency programs, the company plans to reduce energy use from each machine, especially compressors, while paying attention to existing production targets. In this research, the first step taken is by monitoring power usage. This is useful to find out whether the machine is working according to needs, or there are uses that are not to support existing production. For example, the machine turns on when it is not working hours, or there is a machine that is not in good condition. To facilitate this work, we design a compressor power usage monitoring system based on the microcontroller Arduino Mega 2560. In this system, the data taken is the working flow of the compressor using the ACS712 current sensor, which is then processed by Arduino so that the value of power usage is obtained. Next, data is sent via the ESP8266 Wi-Fi module to the database. The output of this system is the value of work flow and compressor working power in real time, along with the total value of power usage by the compressor displayed on a website. Through the site, data can be accessed by PCs or the hand phone that connected to the companys network. The measurement results of this system have a measurement accuracy of 98.48%.

Keywords
Arduino Mega 2560, Monitoring System, Machine Power Consumption, current sensor ACS712, Wifi Module ESP8266

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/UhZeku8q6VRg

Corresponding Author
Rahajeng Kurnianingtyas

Institutions
(a, b) Engineering Physics Department. Faculty of Industrial Engineering
Sepuluh Nopember Institute of Technology
Surabaya

Abstract
The main equipment in the transportation system is a driving element, such as a DC motor on an electric car. Sensors and actuators used in DC motors are components that are directly related to the environment so that both components are susceptible to damage. Currently the field of Fault Tolerant Control (FTC) has developed, which is a controlling system that can tolerate errors that occur and maintain system performance as desired. One of the FTC methods is Passive Fault Tolerant Control (PFTC). The PFTC method is designed as a robust controlling system from a component error. Robust control works by taking into uncertainties and disturbances in the system. In this case the component error is seen as an unobserved disturbance. However, robust control assumes the measurement data is in accordance with the real conditions, or there is no error in the measuring instrument or sensor. So that when there is an error in the measurement, robust control is not able to maintain the stability and performance specified. In addition, the operating conditions of DC motors with varying load torque exacerbate the DC motor speed response because load torque variations are considered a disturbance that must be muted if using a robust control scheme. Therefore, the control algorithm should be derived from a model involving load torque. However, this requires information about the real condition of the torque load. This research proposes a robust control strategy that is able to resolve actuator errors and sensor errors in the PFTC scheme on DC motor servo systems. The variable that is controlled is the speed with the changing torque load. The control structure used is state feedback with the integrator. To accommodate errors in sensors and actuators, these controllers are equipped with an observer that has a robust characters. Information about changes in load torque is obtained not from the measurement of torque, but through estimation so that the model used by the observer must accommodate this problem. Determination of gain observer is done by linear matrix inequality (LMI) formulation and is treated as a multiobjective optimization problem. PFTC system testing is carried out both simulation and experimental by providing an offset error. The bias error in the actuator can be a disturbance that blocks the current from the servo amplifier (as an actuator) from entering the DC motor. Error bias in speed sensor occurs in tachogenerator. The PFTC system is tested in real time on the MS150DC modular servo system. The PFTC system is better able to maintain performance when there are errors in the actuators and sensors compared to systems without PFTC so that the system response can return to the set point. The PFTC system designed to correct errors that occur in the system with each error value that can be estimated at 70% on the actuator and 73% on the sensor.

Keywords
Robust Control ; Passive Fault Tolerant Control ; Motor DC ;Observer

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/CmNDRxaGvch8

Corresponding Author
TURAHYO TURAHYO

Institutions
SEKOLAH TINGGI TEKNOLOGI BONTANG

Abstract
Advertising is utilized to provide information to the community in order to attract attention and move the desire to buy goods so as to increase the number of sales of goods or services. Advertising is generally made and placed in strategic places that can be seen both morning and night. To see billboards at night, a good light is necessary. This lighting uses floodlights that require considerable electrical power. Inverters with the DDS method can be utilized to reduce the electrical power requirements for illuminating billboards by reducing the voltage by changing the modulation index on the PWM generator. From the simulation results with a 220 Watt lamp load indicates the output waveform in the form of pure sinusoidal voltage. The output voltage is 223 volts and the current is 2.23 A at a frequency of 50 hz with a modulation index of 0.8. The condition of illumination light is brightly normal, while the 0.6 modulation index produces a 170 volt voltages and a current of 1.7 A with dimmed lighting. Electricity consumption of lighting using an inverter has decreased by 24%.

Keywords
Electricity Billboard, Single Phase Inverter, Digital Direct Synthesis, PWM.

Topic
International Symposium of Engineering, Technology, and Health Sciences

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

Corresponding Author
Sularso Budilaksono

Institutions
(a) Informatics Department, University of Persada Indonesia YAI
Jalan Diponegoro 74 Jakarta
*sularso[at]upi-yai.ac.id
(b) Teknik Informatika Fakultas Teknik, Universitas Persada Indonesia YAI
Jalan Salemba Raya no 7/9 Jakarta
*biasbertino95[at]gmail.com
(c) Teknik Informatika Fakultas Teknik, Universitas Persada Indonesia YAI
Jalan Salemba Raya no 7/9 Jakarta
*agus.suwartane[at]gmail.com
(d) Teknik Informatika Fakultas Teknik, Universitas Persada Indonesia YAI
Jalan Salemba Raya no 7/9 Jakarta
*kangahmad[at]yahoo.com
(e) Teknik Informatika Fakultas Teknik, Universitas Persada Indonesia YAI
Jalan Salemba Raya no 7/9 Jakarta
*suwarno[at]upi-yai.ac.id
(f) Teknik Informatika Fakultas Teknik, Universitas Persada Indonesia YAI
Jalan Salemba Raya no 7/9 Jakarta
*susi_wagiyati[at]yahoo.co.id
(g) Teknik Informatika Fakultas Teknik, Universitas Persada Indonesia YAI
Jalan Salemba Raya no 7/9 Jakarta
*sari_nita[at]yahoo.com
(h) Teknik Informatika Fakultas Teknik, Universitas Persada Indonesia YAI
Jalan Salemba Raya no 7/9 Jakarta
*erwin.suhandono[at]upi-yai.ac.id
(i) Teknik Informatika Fakultas Teknik, Universitas Persada Indonesia YAI
Jalan Salemba Raya no 7/9 Jakarta
*emalays[at]yahoo.com
(j) Teknik Informatika Fakultas Teknik, Universitas Persada Indonesia YAI
Jalan Salemba Raya no 7/9 Jakarta
*dgustina77[at]gmail.com
(k) Magister Ilmu Komputer, STMIK Nusa Mandiri
Jalan Kramat Raya 18, Jakarta
*andriagu1603[at]nusamandiri.ac.id

Abstract
A blind people needs special attention because it is increasingly difficult to carry out activities carried out in everyday life. This study aims to develop a tool that can be used to detect obstacles for blind people using the HC-SR04 ultrasonic sensor. The prototype of a blind visual aid is a stick that uses Arduino and an Ultrasonic Sensor. The hardware consists of a minimum ATmega328 system as the main controller, an Ultrasonic Sensor HS-SRF04 as an object detection, LM2596 Regulator Module is a kind of Switched Mode Power Supply (SMPS) which is used to reduce DC voltage levels, the barrier detection stick for working blind based on trials for several blind people. This stick is able to give a warning to the user when finding objects that are 7cm apart in front of the user.

Keywords
blind people, ultrasonic sensors, prototypes, warnings.

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/Q2pLnAmTEghy

Corresponding Author
Dedi Sepriana

Institutions
a) Master of Information System, Diponegoro University
Semarang, Indonesia
*dedisepriana[at]gmail.com
b) Department of Physics, Diponegoro University
Semarang, Indonesia

Abstract
The health condition of chicken intestines can be seen from the number of goblet cells found in the small intestinal epithelium. The cell identification is required to count the number of goblet cells and in the most cases, identification of goblet cells is carried out through a microscope directly. Although the directly identification saves costs, but the implementation not only takes a lot of time and energy but also is relatively subjective. Here we seek to design a system that can identify goblet cells automatically through segmentation by using two threshold values. The two threshold values are obtained from the gray scale images. Gray scale image is defined as the result of extraction of the Hue component in HSV type images. Goblet cells as the main producer of mucin can be colored in the processing of tissue preparation by using AB-PAS staining technique. This technique turns out the mucin into blue, so the identification of goblet cells can automatically be conducted by extracting blue features. After that we decide the lower and upper threshold values from the results of extraction which show the object as a goblet cell. In conclusion, we provide the results that the threshold value to separating object from other networks is on the uint8 gray scale, with value 176 to 221. The segmentation using two threshold values proves that the system is able to identify the goblet cells properly.

Keywords
Goblet cell; RGB to HSV conversion; Hue component extraction; Multilevel thresholding

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/ynfm3AVCYqkh

Corresponding Author
Farai William Saungweme

Institutions
Institut Teknologi Sepuluh Nopember

Abstract
Nowadays the world is facing global warming as one of its main issues. This is mainly caused by a rise in carbon dioxide and other greenhouse gases concentration in the atmosphere. Flaring is one of the major causes, in 2017, 141 billion cubic meters of natural gas was flared. For archipelago nations like Indonesia, global warming have great negative impacts which include environmental degradation, health implications and economic effects. This study is intended to develop a feasible measure to conserve flare gases. The energy of the flare gas is converted into mechanical energy through thermal power plant. The properties of gas flaring were obtained from Pertamina, Plaju, Palembang. Two possible plant configuration scenarios were developed, simulated using Thermo-flow and the results were compared. Both configurations employ the combined cycle concept, where a Brayton cycle is coupled with a Rankine cycle. The main difference between the two configurations is that configuration 1 uses a Heat Recovery Steam Generator whilst the second uses common Heat Exchangers in-between the gas turbine and the Rankine cycle. The results show that configuration 1 would generate 29.18 MW whilst configuration 2 would generate 24.623MW.

Keywords
Flare gas, Heat Recovery Steam Generator, Heat Exchanger, Thermo-flow, Thermal power plant.

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/TtFv7JhzeWbp

Corresponding Author
Inayati Inayati

Institutions
Microbiology Department of Medical Study Program Faculty of Medicine and Health Sciences Universitas

Abstract
Currently it has been developed a Rapid Test for the detection of a specific secretion RD1, RD2, RD3 antigen of M. Tuberculosis (Ag-TB Rapid Test ) in clinical specimens for Pulmonary Tuberculose diagnosis. The aims of this study is to determine the sensitivity and specificity of Ag-TB Rapid Test towards the combination of microscopic Acid Fast Bacilli examination and Chest radiography. One hundred outpatient patients with clinical pulmonary Tuberculosis were examine the Acid Fast Bacilli (AFB) Microscopy, Chest radiography and serology Rapid test Ag-TB to determine sensitivity and specificity by Diagnostic test.. The sensitivity and specificity are 43.7% and 76.2% respectively, and the combination of microscopic Acid Fast Bacilli examination and Chest radiography are 38.5% and 98.5%. In conclusion Rapid Test Ag-TB can not be used to substitute the combination of microscopic Acid Fast Bacilli examination and Chest radiography for early diagnosis of Pulmonary Tuberculosis

Keywords
Ag-TB Rapid Test, diagnosis test

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/HPakWTxE8cQj

Corresponding Author
ana majdawati

Institutions
(a)Radiology Department of Medical Study Program Faculty of Medicine and Health Sciences Universitas Muhammadiyah Yogyakarta,
(b)Microbiology Department of Medical Study Program Faculty of Medicine and Health Sciences Universitas Muhammadiyah Yogyakarta,

Abstract
Fungal Pneumoniae is lung infection caused by fungi which clinical manifestations are not typical, even asymptomatic. Fungal pneumonia prevalences are 68.3% in both pulmonary tuberculosis and non-tuberculous lung. Fungal Pneumoniae often undiagnosed early but later or late diagnosed and it make fails or not optimal treatment. Clinical manifestation and radiograph Fungal Pneumoniae are not specific .The aim of this study to know sensitivity and spesivicity of chest radiograph on Fungal Pneumoniae. Fifty five suspect Fungal Pneumoniae patients are examine the chest radiography (homogeneous round or infiltrate presentation, cavity, compaction of hilum lymphonody in the form of evenly calcified miliary lesions, abscess images) and sputum fungal culture to determine sensitivity and specificity by Diagnostic test. Positif fungal culture are 21,8% smaller than Negative fungal culture (78.2%). Sensitivity value is 83.3% and a specificity value is 25.6%. In Conclusion chest radiography can be used as a screening examination in patients with suspected fungal pneumoniae, but cannot be used as a screening for healthy patien which showed a negative fungal culture while the patients are suspect Fungal Pneumoniae

Keywords
Fungal Pneumoniae, sensitivity, specificity, chest radiography, sputum fungal culture

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/rVG4JLwmBRpC

Corresponding Author
Ikhlas Muhammad Jenie

Institutions
*Faculty of Medicine & Health Sciences, Universitas Muhammadiyah Yogyakarta
**Faculty of Medicine, Nursing and Public Health, Universitas Gadjah Mada

Abstract
Cardiovascular diseases (CVD) are more frequently occurred in age-adjusted male subjects than female ones. It is suggested that testosterone (T) may contribute to the cardiovascular events, which is initiated by platelet adhesion, activation and aggregation. Endothelial cells (EC) prevent platelet activation and adhesion by synthesizing and releasing thromboregulator agents, including prostacycline (PGI2). Activity of cyclooxygenase (COX) enzyme is needed to catalyze conversion of arachidonic acid into prostaglandin, including PGI2. This study aimed to examine the influence of T to the expression of COX-2 in EC, in either resting (normal glucose environment) or stimulated (high glucose environment). We performed an in vitro experiment using human umbilical vein endothelial cells culture (HUVEC) with 2x4 factorial design. T was exposed to HUVEC in incremental doses: 0, 1, 10 and 102 nM in either normal glucose (5.6 mM) or high glucose (22.4 mM) concentration in treatment medium. Expression of COX-2 was measured using immunocytochemistry. Data were analyzed using independent t-test, one-way ANOVA and analysis of variance 2x4. P value <0.05 was considered significantly different. Percentage of EC positively stained with anti COX-2 antibody in NG medium without T was significantly lower than those with 1 nM, 10 nM and 102 nM T. Percentage of EC positively stained with anti COX-2 antibody in HG medium without T was significantly higher than those with 1 nM, 10 nM and 102 nM T. Exposure of T in incremental doses in either NG or HG medium significantly influenced percentage of EC positively stained with anti COX-2 antibody. There was main effect of glucose medium or T to percentage of EC positively stained with anti COX-2 antibody. Moreover, there was interaction between T and glucose medium to percentage of EC positively stained with anti COX-2 antibody. In conclusion, testosterone increases expression of COX-2 enzyme in resting endothelial cells (normal glucose environment) but decreases significantly expression of COX-2 enzyme in stimulated or activated endothelial cells (high glucose environment).

Keywords
testosterone, endothelial cells, HUVEC, COX-2

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/83mnDQzPfCr6

Corresponding Author
Agustina Susilowati

Institutions
Akademi Farmasi Indonesia Yogyakarta, Indonesia

Abstract
The use of diuretics is needed in situations that require increased water expenditure, one of which is hypertension. Green tea leaves are natural ingredients containing catechin polyphenols (flavonoids). This study aims to determine the diuretic effect of the aqueous extract of green tea leaves (AEGTL). This experimental study using 35 Swiss male mice was divided into 7 groups. Group I was given CMC Na 1%, group II was given dose of furosemide 5.2 mg/KgBB, and group III-VII was given aqueous extract of green tea leaves with doses of 14, 28, 42, 56 and 70 mg/kgBB. Before treatment, all mice were given warm water orally as much as 0.4 ml/20 kgBB. Testing of diuretic effects by measuring urine volume, measurements taken for 6 hours then calculated diuretic activity. From the results of the study obtained the diuretic activity of furosemide is 1.00 and for groups III-VII was given AEGTL respectively 0.53, 0.57, 0.60, 0.71 and 0.91. Green tea causes increase in glomerular filtration rates by increasing blood flow and cardiac output which may contribute to diuretic activity. It can be concluded that AEGTL doses 70mg/kgBB have diuretic activity that is equivalent to furosemide (p <0.05).

Keywords
Diuretic, Aqueous Extract, Green Tea Leaves

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/62dhDGWMyTYc

Corresponding Author
Winny Setyonugroho

Institutions
Universitas Muhammadiyah Yogyakarta

Abstract
Background To collect an honest answer from a respondent is not a simple task, especially when the question is concerning sensitive and personal issues. Researchers must be aware of what is deemed as a taboo topic in an individuals culture and in certain places/locations. This is so that the researcher may obtain the most honest results, and acquire important easy-to-use tools when conducting a survey. Aim The aim of this research is to find the differences of the response between paper-based survey and the response from an electronic-based survey. Method Four types of data collection methods were used in this research. Two of the methods were paper-based, one survey handed out in a sealed envelope and one without. The other two methods utilized Line Polls & Survey and Google Forms. The respondents were students coming from two study programs (SP), Civil Engineering and Medical School. The total sample amounted to 192 respondents, with a sample of 48 respondents for each method. Each method took on a respondent from both SPs (n=24 for each SP). And from out of 24, we continued to divide them into 4 cohorts based on their graduating class (class of 2013, 2014, 2015, and 2016). Therefore, we had 6 students for each cohort. The data was analyzed using an Analysis of Variance. Result There were no significant differences between each survey methods. Interestingly, if we take a look at the results of the open paper-based survey and the survey using Line Survey & Polls, where the questions were openly asked and the researcher knew the respondents identity and results, the resulting score is slightly higher compared to the disclosed method (sealed paper-based and Google Forms). Conclusion Using an electronic survey has a similar result to using a paper-based survey, hence it can be used to reach more samples and is more cost-effective. Regarding the honesty of the respondents, further study is needed to address this specific topic.

Keywords
survey, electronic survey

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/etMXE9qxhVk4

Corresponding Author
SETYAWAN WAHYU PRATOMO

Institutions
(a) Department of Electrical Engineering, Faculty of Industrial Technology, Universitas Islam Indonesia
* setyawan.wahyu[at]uii.ac.id
(b) Faculty of Industrial Technology, Universitas Islam Indonesia

Abstract
Diabetes Mellitus prelevance in Indonesian society caused by lifestyle that is excessive energy intake while the activity decreases increasingly. Nowdays, people are eating food that contain rich of energy like sugar. The purpose of this paper is to present EcoBot (Eco-Friendly Bottle for Diabtics) a solute tool to overcome Diabetes Mellitus problem in Indonesia. The research method is using QFD method.This method is divided into several parts, namely planning, implementation, evaluation, and action. Planning is done to identify the problem that is analysis of daily sugar consumption, identifying materials and tools, and data collection as a reference tool design and conduct research on the data that has been collected. Implementation is done to product design and product production. The evaluation is to test the products to society. Actions are mass production, copyright registration, and registering patents for EcoBot. The mechanism of work of this tool is using NodeMcu, LED and photodiode , servo, LCD, and android application. The expected result is hopefully EcoBot be able to contribute in reducing and preventing Diabetes Mellitus in Indonesian society.

Keywords
Consumption;Diabetes Mellitus; EcoBot; Sugar;

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/GhBavYd63TqJ

Corresponding Author
Arfah Husna

Institutions
PUBLIC HEALTH FACULTY, TEUKU UMAR UNIVERSITY

Abstract
Introduction common cold is a disease caused by rhinovirus which will heal by itself because the life span of the virus is limited. Cases of cold commissions in Meureubo puskesmas in 2018 were 147 cases. The purpose of the study was to determine the effect of knowledge, attitudes, actions and environment on the incidence of Commond Cold in children in the Work Area of Meureubo Health Center in West Aceh Regency. The method of researched wass an analytical survey with cross sectional design, a population of 60 people and a sample of 60 people which is a total sampling, the data were analyzed using simple linear regression analysis. The results of the study have an influence between knowledge (value of regression coefficient 0.713 and significant 0.000), attitude (regression coefficient value 0.675 and significant 0.000), action (regression coefficient value 0.639 and significant 0,000), and environment (regression coefficient 0.518 and significant 0.000) Commond Cold in children. The conclusion is the influence between knowledge, attitudes, actions, and environment on Commond Cold in children. The Recomended to the Meureubo Health Center are expected to be able to provide information to the community about Commond Cold disease, how to prevent and treat Commond Cold in children.

Keywords
Commond Cold, Behavior, Environment

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/u3PfZcrx7pa8

Corresponding Author
Harini Sosiati

Institutions
Universitas Muhammadiyah Yogyakarta

Abstract
Thermoplastic and thermoset polymer composites reinforced with kenaf fiber or CaCO3 have been extensively investigated. However, the study on the combination of kenaf fiber and CaCO3 reinforced epoxy resin is rare. This research discussed the effect of CaCO3 particle size and the ratio of kenaf to CaCO3 content on the impact strength of alkali-treated kenaf to CaCO3/epoxy resin hybrid composites. 30 % of the hybrid kenaf fibers and CaCO3 particles reinforced epoxy resin composites were fabricated by hand lay-up technique at  4 MPa for 12 h. Impact test of the composite specimens was conducted using a Charpy Impact test according to ASTM D 6110. The morphology of impact fracture surface was examined by scanning electron microscopy (SEM). The results showed that the impact strength of the hybrid composite increased with the decrease of CaCO3 particle size, and the ratio of kenaf to CaCO3. Interfacial bonding between the reinforcement (kenaf and CaCO3) and epoxy resin matrix, the uniform dispersion of kenaf and CaCO3 within the epoxy resin matrix are two crucial factors influencing the impact strength of the composite.

Keywords
Kenaf; CaCO3; hybrid composite; impact strength; SEM

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/hpX4EaTDYWtn

Corresponding Author
Arifina Febriasari

Institutions
(a) Department of Chemical Engineering, Universitas Serang Raya

(b) Department of Chemistry, Universitas Gadjah Mada

(c) Department of Rubber and Plastic Processing Technology, Politeknik ATK Yogyakarta

Abstract
PVDF membrane modification has been done by coating it using chitosan which is mixed with zinc oxide. This study was conducted to determine the effect of chitosan-zinc oxide on PVDF membrane hydrophobicity and performance. The coating has been processed by immersing PVDF membrane into a chitosan-zinc oxide hybrid solution with a ratio chitosan : zinc oxide of 1: 0 (M1), 6: 1 (M2), 4: 1 (M3), and 2: 1 (M4). Membrane morphology characterization was carried out by FE-SEM and FTIR. Water contact angle analysis and performance test was conducted to determine the effect of chitosan and zinc oxide

Keywords
Membrane, polyvinylidine flouride, zinc oxide, performance test

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/gDd38vzjB7Kq

Corresponding Author
MARSIANUS MARIO FREDIRIKUS HANMINA

Institutions
Department of Mechanical Engineering, Institut Teknologi Sepuluh Nopember, Indonesia.
*masryhanmina29[at]gmail.com

Abstract
The availability of fossil energy sources is increasingly limit because of uncontrolled use, so alternative energy to substitute a fossil energy, one of them is solar energy. Solar energy used as a heater or drier, as a solar air collector. Solar air collector is one of the heat exchangers that converts solar energy into heat energy. The performance of the solar heater air collector can improved in several ways, namely changing the shape of flat plate to v-corrugated absorber and adding fin to expand the heat absorption area and adding an obstacle to creating turbulence. Fin which used is a half cylinder with a diameter of 6 mm and the angle of 67.5o towards the direction of the working fluid flow under the absorber plate. The obstacle that used as a working fluid disruptor to obtain turbulence flow by giving a straight triangle bent 30o. The highest Qusefull experimental results on the v-corrugated absorber plate with a mass flow rate of 0.08 kg/s with a radiation intensity of 876 Watt/m2 which is equal to 785.80 Watt. The highest efficiency at the radiation intensity of 654 Watt/m2 with a mass flow rate of 0.06 kg/s which is equal to 87%.

Keywords
V-Corrugated absorber plate; Fin; Efficiency solar collector; Radition intensity; Obstacles

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/bUamg2kQuVhB

Corresponding Author
Imaniar Ranti

Institutions
a) Departement of Pharmacology, Faculty of Medicine and Health Science,
Universitas Muhammadiyah Yogyakarta, Yogyakarta, Indonesia
b) Undergraduate programme of Medical Science, Faculty of Medicine and Health Science, Universitas Muhammadiyah Yogyakarta, Yogyakarta, Indonesia
Email : niarranti[at]gmail.com

Abstract
Hyperlipidemia is one of risk factor that can induce cardiac and vascular disease. Kersen leaf is believed lowering lipid profile because it is consist of flavonoids and tannins. The present study was a laboratorium experimental study with pre and post test control group design. The subjects were 30 male white rats (Rattus norvegicus), body weight approximately 200 grams, aged 3-4 months. Rats model were given high-fat diet and PTU for increasing lipid profile level. Rats divided into 5 groups with random sampling. The groups were negative control was not given any treatment, positive control was given simvastatin treatment, and (P1),(P2),(P3) group was given ethanol extract of kersen leaf 100, 200, and 400 mg/kgBB respectively. This study was held for 4 weeks. Lipid profile level was measured before and after therapy. The results showed that ethanol extract of kersen leaf (Muntingia calabura L.) at dose 400 mg / kgBB optimally can decrease LDL, total cholesterol and triglyceride level and can increase HDL level compared to standard therapy simvastatin. Overall, ethanol extract of kersen leaf (Muntingia calabura L.) is a potential folk medicine as antihyperlipidemi.

Keywords
Ethanol extract of Kersen Leaf, lipid profile, hyperlipidemia rats model

Topic
International Symposium of Engineering, Technology, and Health Sciences

Link: https://ifory.id/abstract/8hHRaJfu4exn

Corresponding Author
Victor Danny Waas

Institutions
a) Department of Materials and Metallurgical Engineering - Sepuluh Nopember Institute of Technology, Sukolilo, Surabaya 60111, Indonesia

Abstract
Delamination or interlaminar fracture is a model of damage that often occurs in laminate composites. Delamination occurs due to several factors such as high interlaminar stress, stress concentration at the crack location, imperfections when manufacturing and impact stress. Finite element (FE) analysis using cohesive zone model (CZM) is a method commonly used to investigate delamination. In this study, delamination on 3D double cantilever beam (DCB) specimens with mode-I delamination is investigated using interface elements in ANSYS Mechanical APDL software. The element has 8-nodes connecting two surfaces with a bi-linear formulation. Simulations of delamination on carbon fiber composite laminate material T300/977-2 and HTA/6376C are carried out. Effect of number of elements variations on the critical forces of the composite materials is examined. The mesh variations include coarse, fine, and finest meshes. The simulation results show that the critical force values can be obtained accurately using finest mesh. This study also gives a reference number of elements suitable for 3D simulation of delamination in the composite laminates.

Keywords
delamination, cohesive zone model, 3D DCB, T300/977-2, HTA/6376C

Topic
International Symposium of Engineering, Technology, and Health Sciences

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