:: Abstract List ::

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151 |
Engineering |
ABS-310 |
The effect of holding and stirring time on porosity of aluminium copper alloy in rheocasting process Maruf maruf1,2, Rudy Soenoko3, Wahyono Suprapto3, Ahmad As^ad Sonief3
1Mechanical Engineering Department, Lambung Mangkurat University, Banjarmasin, Indonesia
2Doctoral Program of Mechanical Engineering Department, Brawijaya University, Malang, Indonesia
3Mechanical Engineering Department, Brawijaya University, Malang, Indonesia
Abstract
Aluminum and its alloys are among the most used materials in design and engineering applications after steel. The most widely used copper aluminum alloys are those containing 4 to 10% Cu. Aluminum-copper alloy can reduce the castability or flowability of the alloy. This deficiency can lead to porosity defects, thereby reducing product quality, and the rheocasting process is expected to improve castability. This research aims to investigate effect of holding and stirring time on porosity of aluminium copper alloy in rheocasting process. Casting process using rheocasting with variation of holding and stirring time. the specimens were tested for elemental composition using spectrometry. The percentage value of specimen porosity is done by comparing apparent density using the picnometry method and true density using ASTM E252-84. Based on the research that has been done regarding the effect of holding time, stirring time on porosity, it can be concluded as follows: The longer the stirring time and the holding time, the lower the porosity value. The current article is to highlight the implication of rheology are effect of several process and metallurgical parameters, fraction solid of the primary phase and its morphology, size and distribution micro structure
Keywords: Rheocasting- aluminum copper alloys- porosity
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| Corresponding Author (Maruf Maruf)
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152 |
Engineering |
ABS-55 |
IMPROVING QUALITY LEVEL OF DINING TABLE THROUGH PAINTING PROCESS BY USING TAGUCHI METHOD Eko Muh Widodo, Oesman Raliby, Tuesi Ari Purnomo, Candra Widiarso
Industrial Engineering Departement, Faculty of Engineering, Muhammadiyah University of Magelang
Abstract
In the process of painting a product, it commonly occur defect results including corrugated painting, perforated, less smooth, speckled and uneven surface of painting. This can occur due to the setting parameters in the process of painting is not appropriate. This research is done to reduce the high rate of defects in the process of painting products of table by setting parameters using the Taguchi method. Processing data using the Taguchi method are distinguished by two ways: (1) to see the impact of uncontrollable factors on the percentage of defective products and (2) to see the controllable factors to the variability of the number of defective products. Controllable factors in this study are: composition of paint, painting distance, pressure and temperature. The research results revealed that a significant factor level against average and variability of percentage number of defective products are composition of the paint level 2 (0.75: 1), the distance painting level 2 (20-25 cm), pressure level 1 (50 psi fluid tip round 1.88 mm), temperature level 2 (60 C), sanding sealer level 2 (15-20 cm) and a clear top coat level 1 (20-25 cm).
Keywords: Product Defects, Level factor, Taguchi
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| Corresponding Author (Eko Muh Widodo)
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153 |
Engineering |
ABS-312 |
Performance Analysis of Solar and Wind-Based Hybrid Power Plant Using HOMER Software (Case Study: Emas Bayu Hybrid Power Plant in Dusun Bondan, Cilacap) Supriyono1, Devi Taufiq Nurrohman1, Agus Santoso2, Betti Widianingsih1
1Department of Electronics Engineering, Politeknik Negeri Cilacap, Jl. Dr. Soetomo No.1 Sidakaya, Cilacap, Indonesia
2Department of Mechanical Engineering, Politeknik Negeri Cilacap, Jl. Dr. Soetomo No.1 Sidakaya, Cilacap, Indonesia
Abstract
Solar energy is a renewable energy source that is still being utilized today. Despite solar energy is free energy, it is very abundant and eco-friendly. However, the energy obtained from solar energy is inconsistent energy because the sun does not shine for one full day. Environmental factors, such as trees and tall buildings will also affect the energy obtained so that the performance of this power plant from solar energy is not optimal. Recently, many researchers have developed hybrid power plants which combine two or more different energy sources in the same system. In this paper, we develop a hybrid power plant with an off grid system (not connected to PLN) that utilizes solar energy and wind energy. The hybrid power plant being developed is installed in Dusun Bondan, Kampung Laut District, Cilacap Regency. The installed power plant is determined for its performance by analyzing several parameters such as total energy production, net present cost (NPC) and cost of energy (COE). These parameters are analyzed using software which called hybrid optimization of multiple energy resources (HOMER). The simulation results show that the total energy production is 12,285 kWh/year, consisting of 10,480 kWh/year from solar energy, 1,805 kWh/year from wind energy. For the COE and NPC values are IDR 14,266/kWh and IDR 1,190,000,000, respectively.
Keywords: Hybrid Power Plant- Solar Energy- Wind Energy- HOMER
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| Corresponding Author (Devi Taufiq Nurrohman)
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154 |
Engineering |
ABS-313 |
Little Story from Traditional Coffee Business in Temanggung Indonesia: University-Business-Government Collaboration Chrisna Bagus Edhita Praja (a*) Heni Lutfiyati (b) Muji Setiyo (c)
(a) Faculty of Law, Universitas Muhammadiyah Magelang, Magelang, Indonesia
(b) Department of Pharmacy, Universitas Muhammadiyah Magelang, Magelang, Indonesia
(c) Center of Research and Community Empowerment, Universitas Muhammadiyah Magelang, Magelang, Indonesia
Abstract
Since 2011, coffee products were designated as one of the leading products in Temanggung Regency. Since then, coffee SMEs have sprung up in Temanggung and are mostly traditionally managed home producers enjoyed by many coffee connoisseurs in Indonesia. However, customer demand for Temanggung coffee is not comparable to the production capacity produced by coffee producers. Therefore, as a strengthening of Temanggung Coffee products, collaboration between the University-Business-Government is needed through the Regional Superior Product Development Program. Through this activity, 2 (two) partners who had been producing ground coffee for 2 (two) years were selected and needed science and technology diffusion in the fields of processing technology, improved production management, product development, management of brand rights, and marketing. At first partner (Manunggal Coffee), the current production uses a roaster machine and there is an increase in production reaching 150 kg from the previous average of only 100 kg per month. Currently also serving roasting services for communities around SMEs. On the financial management side, currently the SME standard administration is in order. Meanwhile, for second partner (Gesing Coffee), it has coordinated with farmers and the village government for uniform quality of picking and post-harvest handling for stocks. Currently, Gesing Coffee has produced its own roaster machine. In addition, this SMEs has also served roaster services. The test results showed that the roaster was able to process 36 kg of coffee with 3 kg of LPG.
Keywords: Traditional Coffee Business- Robusta Coffee- University-Business-Goverment Collaboration
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| Corresponding Author (Chrisna Bagus Edhita Praja)
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155 |
Engineering |
ABS-60 |
The analysis of determining cost of products and the application of Cost Plus Price Methods in ordering natural gas sell prices in The Gundih area of PT Pertamina Asset EP 4 Field Cepu, In Sumber Village, Kradenan Sub-District, Blora District Yunanik (a), Andian Ari Istiningrum (b), Tri Warcono Adi (c)
Politeknik Energi dan Mineral Akamigas
Abstract
This study was to determine the determination of the Cost of Goods Sold (COGS) for natural gas produced by the Central Processing Plant (CPP) in Blora District. Total production of natural gas distribution in 2019 through the Natural Gas Distribution Network is 2.36 MMCFD. The cost of natural gas products which has a value is Rp. 3,333, - / M3, 4000, - / M3, and the determination of the cost of gas based on recalculation by researchers, the natural gas that can be produced by the Central Processing Plant (CPP) scenario I is IDR 5,771 / M3 and the calculation of COGS according to the regulations to the calculation of the researcher results in a higher cost of goods. Selling prices according to the company and the Cost Plus Pricing Method per 1 M3 of natural gas in scenario I is Rp. 6,638, - / M3. This costing plus pricing method uses the cost factor as a calculation.
Keywords: COGS, Natural Gas
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| Corresponding Author (Yunanik Yunanik)
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156 |
Engineering |
ABS-62 |
MICROSTRIP ANTENNA 2.4 GHZ U-SLOT PATCH DUAL SLIT VERTICAL WITH GROUND SQUARE DESIGN FOR ZIGBEE TECHNOLOGY Sri Marini (a*), Sukwati Dewi Asrika(b), Andi Hasad (c), Muhammad Fikri Bivani Al Qohar(d), Muhammad Viki Nisfani Al Azis(e)
(a*,b,c)Faculty of Engineering, University of Universitas Islam 45 Bekasi
Jl.Cut Meutia No 83 Bekasi, Jawa Barat 17113
(d)Faculty of Engineering, University of Universitas Singa Perbangsa Karawang
Jl. HS.Ronggo Waluyo, Puseurjaya, Kec. Telukjambe Tim., Kabupaten Karawang, Jawa Barat 41361
(e)faculty of Social Sciences and Political Sciences, University of Singaperbangsa Karawang
Jl. HS.Ronggo Waluyo, Puseurjaya, Kec. Telukjambe Tim., Kabupaten Karawang, Jawa Barat 41361
Abstract
In recent years, many significant developments and high attention are being paid to ZigBee technology since the license free ISM frequency spectrum for commercial communications and applications. The attractive nature of ZigBee coupled with the rapid growth in wireless communication systems has made ZigBee an outstanding technology to replace the conventional and popular wireless technology in use today like Bluetooth. U-Slot Patch Dual Slit Vertical with Ground Square Design Microstrip Antenna is presented in this paper for 2.4 GHZ band applications. These applications include ZigBee. The potential of ZigBee technology is enormous due to its tremendous advantages such as the capability to provide extremely fast data rates at short transmission distances while requiring very low power dissipation. Recently, printed antennas have played a major rule in development of antennas with different frequencies. The construction of proposed antenna is done on FR-4 epoxy substrate with thickness of 1.6 mm and epsilon r =4.4. technique on ground plane using proximity coupled feed, The proposed antenna operates 2.4 GHZ with good Vertical radiation patterns, its narrow band impedance bandwidth protect it from interference problem from other applications in ISM band. Proposed antenna has compact size of (12x12) mm2 The conductor material uses copper with a thickness of 0.035 mm. It has advantages in simple design, narrow bandwidth, and compact in size and easy in fabrication. The measured result is in good agreement with simulated one, that worked at 2.4 GHz frequency with Vertical radiation pattern, gain ≥- 3dBi, input impedance 50 ohm, Returnloss leq -13 dB and VSWR leq 1.7
Keywords: Microstrip Antenna, Zigbee Tecnology, WPAN, U-Slot, Dual Slit Vertical
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| Corresponding Author (Sri Marini)
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157 |
Engineering |
ABS-320 |
The addition of fresh air to steel sponge oxidation to reduce vehicle exhaust emissions Budi Waluyo, Suroto Munahar, Bagiyo Condro Purnomo, Muji Setiyo, Saifudin, Noto Widodo, Bambang Pujiarto
1 Department of Automotive Engineering, Universitas Muhammadiyah Magelang, Jl. Mayjen Bambang Sugeng, km 5, Mertoyudan, Magelang, 56172, Jawa Tengah, Indonesia
2 Informatic Engineering, Engineering Faculty, Universitas Muhammadiyah Magelang, Jl. Mayjen Bambang Sugeng, km 5, Mertoyudan, Magelang, 56172, Jawa Tengah, Indonesia
Abstract
Nowadays, after treatment, technology has been widely applied by oxidizing harmful exhaust emissions into more environmentally friendly gases. However, the technology for oxidizing these emissions uses relatively expensive platinum and rhodium catalysts. This study offers a simple exhaust gas oxidation technology by utilizing heat energy and a very cheap steel sponge material. The method used in this study is to utilize exhaust gas energy to the oxidation chamber of a steel sponge through an exhaust manifold with a heat-insulating layer. The steel sponge oxidation chamber is also lined with heat insulation for the steel sponge^s optimal heat absorption. Fresh air is entered through the non-return valve due to the difference in environmental pressure with low pressure due to exhaust gas flow velocity. The results of this study indicate that the addition of fresh air is effectively applied to reduce carbon monoxide emissions, but does not significantly reduce hydrocarbon emissions. Carbon monoxide is polar, so it is very easily oxidized with the addition of fresh air so that this system is effectively applied
Keywords: exhaust emissions- steel sponge- fresh air
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| Corresponding Author (Budi Waluyo)
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158 |
Engineering |
ABS-65 |
Effect methanol, ethanol, butanol on the emissions characteristics of gasoline engines Syarifudin1, Firman Lukman Sanjaya2, M. Khumaidi Usman3, Yohanes Sibagariang4
1,2,3Department of Mechanical Engineering, Harapan Bersama Politechnic, Tegal, Indonesia.
4Department of Civil Engineering, Quality University, Sumatera Utara, Indonesia
Abstract
The increasing of the volume of motorized vehicles leads to an increase in dependence on fossil fuels and an increase in air pollution. The problem can be reduced by utilizing renewable alcohol fuels such as methanol, ethanol, and butanol. High number of octane and oxygen content is the main reasons. This study aims to observing the exhaust emissions of the gasoline engine with a mixture of methanol, ethanol, and butanol. The percentage of alcohol that used is 0% to 30% by volume. The test was carried out in 2000, 3000, and 4000 rounds. The results of the study explained that the use of methanol, ethanol, butanol in the fuel mixture was proven to reduce exhaust emissions. CO and HC emissions decrease during the percentage of alcohol in the fuel increased. The highest reduction in CO and HC emission in methanol blended fuel was 30%, respectively 94.55% and 82.71%. Meanwhile, CO2 emissions increased by 34.37% at 2000 rpm engine speed. Based on this test, the addition of methanol to fuel can reduce exhaust emissions better than ethanol and butanol.
Keywords: renewable, fuel, methanol, ethanol, butanol, reduce, emissions
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| Corresponding Author (syarifudin syarifudin)
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159 |
Engineering |
ABS-322 |
Development of a low cost LED-halogen solar simulator for indoor experiments on the performance of photovoltaic modules afected by various light intensity and temperature environments Yohanes S. Peli (a,*), Ambrosius Tino (a), Diana Rachmawati (a)
a) Electrical Engineering Department, Politeknik Negeri Kupang, Jl. Adisucipto, Penfui - Kupang. Nusa Tenggara Timur. INDONESIA
*jonsubanpeli[at]gmail.com
Abstract
The aim of this article was to discuss in detail, the development of a low cost LED-halogen solar simulator, including characteristics. The LED-halogen was choosen because of its accessible, cheap and work steadily with simple power supply. It was also quick and easy to construct with simple equipment. The construction of the simulator consisted of two main parts- the collector module and LED-halogen light sources. The collector module faced upwards to the light source, which was placed at the top of the unit. In addition, the simulator was equiped with proper cover to reduce the interference of light entering from the outside. The optimal distance between the light surface simulator and the test plane was 50 cm, giving the maximum non-uniformity of 9.2%. Experiment results showed that the output power of the tested PV module strongly depends upon the solar irradiation falling on it. The power output of the module increases linearly with the increase in the incident solar radiation. With the increase in the incident solar radiation more number of photons will be available to move the electrons from balance band to conduction band resulting into production of more current. Furthermore, the increase in temperature result in the reduction of band gap of the PV cells in the module. This leads to the increase in Isc but decrease in Voc. The decrease in Voc is more prominent than increase in the Isc. Therefore, overall power output and effi-ciency of the PV module decreases with the increase in its operating temperature.
Keywords: LED-halogen solar simulator- PV performance- irradiance- temperature
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| Corresponding Author (Julius Tanesab)
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160 |
Engineering |
ABS-68 |
Forecasting Dengue Hemorrhagic Fever Incidents: A Machine Learning Approach Tien Rahayu Tulili(*a), Yohanes K. Windi (b), Bambang Cahyono(a), Damar Nurcahyono(a), Karyo Budi Utomo(a), Ahmad Rofiq Hakim(a)
(*a) Department of Computer Engineering, Politeknik Negeri Samarinda,
Jl. Dr. Ciptmangunkusumo Kampus Gunung Panjang, East Kalimantan, Indonesia.
*tien.tulili[at]polnes.ac.id
(b) Politeknik Kesehatan Kemenkes
Jl. Pucang Jajar Tengah 56, Surabaya, Jawa Timur, Indonesia
Abstract
Dengue is a viral infection transmitted by Aedes mosquitos. This disease mostly spread in the tropical and sub-tropical countries and according to WHO, the dengue outbreaks has increased 30-fold over the last five decades. The disease is still an ongoing burden of throughout the world. In Indonesia, for example, the incident of dengue hemorrhagic fever (DHF) has shown up 8,056 cases spread in the last five years. One of the ways to help the government to mitigate any possible of the spread is by utilizing a nearly accurate forecast system in predicting the cases. This study aims to develop machine learning as the most accurate predicting method of DHF cases in East Kalimantan. Various kinds of data are used in developing some machine learning models. Furthermore, identifying variables prior the models^ development is done to achieve the best model of prediction- furthermore, a comparative study of the models built is discussed.
Monthly dengue cases, incidence rate (IR), climate factors (rainfall, atmospheric pressure, the duration of the sun) and socio-economic conditions (population density, the number of inhabitants) from three different cities/districts (Samarinda, Balikpapan, and Berau) in East Kalimantan from 2007-2019 become data of the study. Those data are collected from the Local Department of Ministry of Heath Republic Indonesia, and Indonesia Central Bureau of Statistics (CBS). Prior machine learning^s modeling, all data are analyzed with Pearson Correlation method to identify which variables has a positive correlation with DHF cases. Several machine learning algorithms, those are: Neural Network, Deep Learning, Generalized Linier Model, Generated Boast Tree and KNN, implemented in the modelling and forecasting. The results showed that some climatic factors are negatively correlated to DHF cases in East Kalimatan. Furthermore, the best method for forecasting the incidence is neural network with the RMSE value was 8.660%.
Keywords: forecast, dengue hemorrhagic fever, machine learning, deep learning, neural network, generalized linier model, and KNN
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| Corresponding Author (Tien Rahayu Tulili)
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161 |
Engineering |
ABS-325 |
Building Durian Seed Marketing Web As An Alternative Marketing Media During The Pandemic Ray Miftakhul Ilmi(a), R. Arri Widyanto(a*), Dimas Sasongko(b), Anggun Dwi Agustina(a), Fardani Irvan(a),Agus Setiawan(b), Bambang Pujiarto(a)
a. Department of Information Technology, Faculty of Engineering, Universitas Muhammadiyah Magelang
b. Department of Informatic Engineering Faculty of Engineering, Universitas Muhammadiyah Magelang
Abstract
Argo Bibit is a local business in Magelang District which is engaged in selling fruit seeds by providing various types of durian fruit. Currently, the process of buying and selling seeds is carried out conventionally, prospective buyers must come to the nursery to select seeds to buy and make transactions. During a pandemic, the transaction and marketing processes experience obstacles and limitations, so that a medium used for transactions is needed. This research uses object oriented programming method. The result of this research is an E-commerce website which is used for selling durian seeds. This system is used to facilitate interaction between managers and customers in placing orders and making transactions without having to meet in person. In addition, customers can order customized seeds according to their wishes. Based on the results of tests that have been done, 0.79 customers state that this website is easy to use and understand, can help customize fruit seeds, the information is clear and makes it easy to be merciful.
Keywords: E-commerce- Object Oriented Programming- Fruit seed- Marketing- Customize
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| Corresponding Author (R Arri Widyanto)
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162 |
Engineering |
ABS-334 |
use of medical record data to simplify the hospital decision making system Edy Kurniawan
Universitas Muhammadiyah Ponorogo
Abstract
Electrical Engineering, Faculty of Engineering, Muhammadiyah Ponorogo of University, Ponorogo, Indonesia. Medical records in hospital are only a pile of data that cannot provide detailed information. These data piles can be processed to provide information to related departments (hospitals, health offices, communities). So that the related parties if they will carry out development and counseling can be right on target. to get the information contained in the pile of medical records at the hospital.explore the information contained in patient medical record data in private hospitals using the Weka application with the decesion three j45 method.From the results of extracting medical record data, it is hoped that it can be used by various parties (hospital, health office) to make decisions. In addition, the community can also encourage them to choose a suitable hospital if they are going for treatment. This research was conducted at Aisiyah Ponorogo hospital, in the Medical records section
Keywords: Data mining- medical record- public health
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| Corresponding Author (Yusuf Adam)
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163 |
Engineering |
ABS-337 |
Disaster Mitigation: Design of Portable Toilet for People with Disabilities in Refugee Camp Oesman Raliby (a) & Muhamad Khoirul Amin (b)
a) Industrial Engineering Department - UNIMMA
b) Department of Pharmacy - UNIMMA
Abstract
Disasters that occur in various regions have the potential to increase the number of new people with disabilities and exacerbate existing ones. This group will eventually become very vulnerable to multiple risks in refugee camps and socially marginalized. This study aims to reduce the risk of disaster impacts on these vulnerable groups so that during the evacuation in the holding camps, they can still overcome the problems independently without much dependence on others. Providing inclusive toilets is an option to answer this problem. The method used in this research is to use a universal design approach and set standard standards. Universal design is a design product that can create a conducive environment for every user with disabilities to be used together without any discrimination. The results showed that the resulting toilet design met the standard principles of the American with Disabilities Act - ADA.
Keywords: Toilet Design, Portable, disability
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| Corresponding Author (Oesman Raliby)
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164 |
Engineering |
ABS-83 |
Comparative Study on Fuzzy Supervision and Gain Scheduling for Nonlinear Level Control System Chalidia Nurin Hamdani (a*), Wasis Waskito Adi (a), Dimas Okky Anggriawan (b)
(a) Refinery Instrumentation Engineering, Politeknik Energi dan Mineral Akamigas
(b) Electrical Engineering, Politeknik Elektronika Negeri Surabaya
Abstract
Nonlinear system is always become interesting topic to be researched. Level system is the one of them. Deadtime, changeable dynamics, etc make the conventional controller like PID have to be improved and optimized to face this system. In this paper, we propose a comparative study about PID control which is optimized using two different methods. First method is fuzzy supervision: the fuzzy is used to supervise the PID parameters based on desired operating points and performance. Using the same operating points and desired performance, the second method, gain scheduling, is designed: the optimal PID parameters is mapped in scheduling algorithm. Both methods is evaluated and compared in terms of settling time and maximum overshoot in some set point conditions by MATLAB simulation. The simulation result shown that the PID-fuzzy supervision have a better performance than the PID-gain scheduling. PID-fuzzy supervision give a faster response with 0.9 second of time constant deviation and 0.7 second of settling time deviation against PID-gain scheduling in operating point of 22 percent. Furthermore, this result is also confirmed by the value of ITAE. In same operating point, PID-fuzzy supervision ITAE (249,4779) is smaller than PID-gain scheduling ITAE (307,0614).
Keywords: nonlinear system- fuzzy supervision- gain scheduling
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| Corresponding Author (Chalidia Nurin Hamdani)
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165 |
Engineering |
ABS-85 |
Economic and spatial development in Greater of Yogyakarta Ratika Tulus Wahyuhana (a), , Hanna Amalia Putri (b), Ryan Hidayat (c)
a) Perencanaan Wilayah dan Kota, Fakultas Sains dan Teknologi, Universitas Teknologi Yogyakarta, Jl. Siliwangi Jl. Ring Road Utara 55285, Indonesia
b) Perencanaan Wilayah dan Kota, Fakultas Sains dan Teknologi, Universitas Teknologi Yogyakarta, Jl. Siliwangi Jl. Ring Road Utara 55285, Indonesia
c) Perencanaan Wilayah dan Kota, Fakultas Sains dan Teknologi, Universitas Teknologi Yogyakarta, Jl. Siliwangi Jl. Ring Road Utara 55285, Indonesia
Abstract
65% of Yogyakarta land use is used for settlements with open space only 2%. Limited land does not support urban development, thus indicating the expansion of the surrounding area. In addition, the level of economic inequality is quite high, so it is necessary to study the development and economy.This study aims to see the development of the expansion of the city of Yogyakarta and economic performance through mapping and income distribution.This research uses quantitative research methods with quantitative descriptive analysis techniques. The analytical method used is spatial analysis through mapping, economic growth, Williamson Index analysis, Klassen Typology, and Location Quotient.The performance of Yogyakarta region shows the secondary and tertiary sectors are developing towards the outskirts of the city and do not dominate the city center. The sector of function transfer and physical development, especially in housing, service and industrial sectors. High economic inequality with an IW > 0.5
Keywords: Greater Yogyakarta, development, economic, spatial
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| Corresponding Author (Ratika Wahyuhana)
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166 |
Engineering |
ABS-344 |
Internalization of Local Wisdom Values in Handling The Waste of The Stone Handicraft Industry Towards a Sustainable Industry Oesman Raliby (a), Effendi Bin Mohamad (b), Hambali Bin Arep (b)
a) Industrial Engineering Departement - UNIMMA
b) Faculty of Manufacturing Engineering - UTeM
Abstract
Abstract
The small and medium industry is one of the strategic pillars in promoting economic growth but can damage the environment, moreover if the use of these natural resources without responsibility will undoubtedly reduce the quality of the environment and become unsustainable. The purpose of this research is to encourage business actors to align aspects of natural resource sustainability with waste minimization and internalize social aspects towards environmentally-friendly industries as local wisdom values. The approach method is to investigate the local geniuses concept whose constituent variables have never been tested before. The data collected is processed and analyzed using the Cradle to Cradle concept by modeling industrial processes in natural processes known as the ^biomimetic^ approach. The test results show that the variables forming the structure of the local genius concept contribute to the performance of MSMEs and impact business sustainability. So that can be concluded that the institution can use this study^s findings as a reference for fostering stone handicraft MSMEs towards sustainable small craft industries.
Keywords: Local genius, Sustainable, Industry, Stone Craft
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| Corresponding Author (Oesman Raliby)
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167 |
Engineering |
ABS-89 |
Quality Optimization Of Data Rate Video Streaming Over Bluetooth Network Andi Hasad (a*), Muhammad Amin Bakri (b) Abdul Hafid Paronda (b), Sri Marini (b)
Electronic Department, Faculty of Engineering, Universitas Islam 45
Abstract
Video streaming over Bluetooth network as a medium of learning at higher education in the world began in 2004, in Indonesia it began in 2012. Unfortunately, the development of video streaming using Bluetooth network has not been used optimally in the field of higher education, especially at client-server distances reaching 50 m. This is caused by the video quality received on the client is not good and not according to Cisco standards. This paper, proposes a solution by providing a good video quality based on optimizing the performance of video streaming data rate transmission over Bluetooth Piconet Pervasive network, with Android OS on the client-side. This research is quantitative research with experiments method. All average values of throughput, delay, jitter and packet loss parameters are eligible for Cisco standard video streaming for 50 m measurements, where packet loss is below 5%, the value of packet loss parameters obtained has the highest value of 4.97% and the lowest of 4.88% with an average value of 4.92%. This research contributed in providing a good quality of video streaming over Bluetooth networks. The results showed that the greater the interference of Wi-Fi on the Bluetooth piconet pervasive network, the quality of video received by the client (mobile phone) decreased, marked by the increasing value of the average packet loss obtained during the video streaming.
Keywords: Bluetooth- Quality optimization- Data rate video streaming- Piconet pervasive- Client-server
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| Corresponding Author (Andi Hasad)
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168 |
Engineering |
ABS-95 |
APLIKASI SISTEM PRESENSI DOSEN DAN MAHASISWA MENGGUNAKAN RFID DAN RASPBERRY PI 3+ BERBASIS WEB Agus Triyono
Politeknik Negeri Samarinda
Abstract
Untuk memastikan proses belajar dan mengajar dalam ruang kelas diperlukan syarat yaitu kehadiran dosen dan mahasiswa. Ketika dosen tidak hadir maka proses belajar dan mengajar tidak akan terlaksana, begitu pula presensinya. Untuk itu dibutuhkan sebuah sistem yang terintegrasi berupa presensi dosen dan mahasiswa berupa raspberry dan RFID sebagai media inputnya. Asumsi dari sistem ini adalah terlepas dari mekanisme penitipan kartu RFID milik dosen ketika dosen tidak hadir. Solusi dari mekanisme itu dapat dikembangkan kemudian melalui penelitian yang lain yang akan memberikan improvement pada sisem ini. RFID digunakan karena kepraktisannya, selain contactless perangkat readernya berdurasi lama dalam operasinya. Masing-masing ruangan dipasang raspberry sebagai alat bertransaksi presensi.
Keywords: Kata Kunci: RFID, Presensi, Raspberry Pi
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| Corresponding Author (Agus Triyono)
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169 |
Engineering |
ABS-97 |
Pectin Isolation from Sentul Peel (Sandorium Koetjape) with Microwave Asissted Extraction Medyan Riza (1*), Mukhlishien (1), Ika Zuwanna (2), Rozanna Dewi (3)
*medyan_riza[at]unsyiah.ac.id
1) Chemical Engineering Departement, Universitas Syiah Kuala, Banda Aceh, Indonesia, 23111
2) Post-Graduate Study Program, Chemical Engineering Departement, Universitas Syiah Kuala, Banda Aceh, Indonesia, 23111
3) Chemical Engineering Departement, Universitas Malikussaleh, Aceh Utara, Indonesia, 24351
Abstract
Pectin is usually isolated using the conventional extraction methods are time consuming. Pectin from sentul peel has been successfully isolated by using Microwave Assisted Extraction (MAE). This method has a short processing time and little solvent needed. This study is aimed to determine the effect of extraction time on the characteristics of pectin produced from sentul peel. The extraction process was conducted using HCl and soaked using 96% ethanol. The parameters analyzed were pectin yield, moisture content, equivalent weight, methoxyl content and functional group analysis using FTIR. The results of this study indicated that the yield of pectin obtained is in the range of 5.16-12.66%. The highest yield at the extraction time of 30 minutes was 12.66%, 16% moisture content, 526 mg equivalent weight and 9.85% methoxyl content and FTIR analysis showed carbonyl and ester groups. Pectin is used in food industry as gelling agents and as an ingredient for forming edible film.
Keywords: Sentul peel- microwave assisted extraction- pectin
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170 |
Engineering |
ABS-102 |
Measurement Analysis of Box Girder Production Cycle Times in Indonesian Infrastructure Projects Verly Widiantoro (a*), Pungky Dharma Saputra (a)
(a) Department of Civil Engineering, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia
*verly.widiantoro[at]gmail.com
Abstract
Infrastructure is one of the important elements in the development of a country. The number of bridge infrastructure projects that can increase the growth of the construction industry in Indonesia must be supported by construction technology as well as the use of precast box girders. Problems arise due to inaccurate planning and production scheduling of box girder which causes the project delay. For this reason, it is necessary to carry out an analysis of the measurement of the box girder production cycle time as soon as possible so that it can provide an overview and reference in planning and scheduling elevated infrastructure projects. The purpose of this research is to measure the box girder production cycle times in Indonesian infrastructure projects. The main variable is the box girder production cycle time. The projects observed were projects in the last 3 years from 2016 to 2020. And the segment production chosen were segments with straight alignment. Average analysis is used to know the average of cycle times. Based on the results of the analysis, the average production cycle time is 38.95 hours with an average delay time of 6.28 hours. The average production cycle time can be used as a reference for planning and developing schedules for elevated infrastructure projects.
Keywords: box girder- production- cycle times
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171 |
Engineering |
ABS-103 |
Solar Tracking Using Extended Mean Shift Based Color Histogram Asepta Surya Wardhana, Astrie Kusuma Dewi
Department of Instrumentation Refinery Engineering, Politeknik Energi dan Mineral Akamigas, Cepu-Blora 58315, Indonesia
Abstract
Nowadays, there are many solar tracking applications using photodiode sensors and Solar Position Algorithm. This tracking depends on the power of light and natural conditions. Inaccurate sun tracking causes the heat concentration to become weak and miss focus on heat-receiving objects. We developed a tracking algorithm to track the sun to support the control system of the dual parabolic concentrator. This algorithm is based on Extended Mean shift to find the tracking position of an object in a video sequence. This algorithm is effective since it exploits the estimation of kernel density for searching the local maximum of a similarity measurement of the color histogram. Expectation Maximization algorithm is also employed to estimate the model parameters and to update the appearance of histogram. The updating histogram would improve the mean shift tracking accuracy and reliability. We successfully applied this algorithm for solar tracking using 148 frames of data. In this experiment, the results obtained in the form of the average value of the color similarity of an object tracking with a truth tolerance percentage of 98.39%.
Keywords: Dual parabolic concentrator, solar tracking, histogram, Extended Mean shift, Expectation Maximization
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| Corresponding Author (Asepta Surya Wardhana)
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172 |
Engineering |
ABS-105 |
Design and Implementation of Data Acquisition Device and Instrumentation Based on Microcontroller for Electric Motorcycle Agus Ulinuha (a*), Jatmiko (b), Almas Ghulam Riza (c)
a) Department of Electrical Engineering, Universitas Muhammadiyah Surakarta, A. Yani ST, Surakarta, 57102
* Agus.Ulinuha[at]ums.ac.id
b) Department of Electrical Engineering, Universitas Muhammadiyah Surakarta, A. Yani ST, Surakarta, 57102
c) Department of Electrical Engineering, Universitas Muhammadiyah Surakarta, A. Yani ST, Surakarta, 57102
Abstract
Along with intensive people activities in different places, the demand on transportation increases. For some dense road, motorcycle might be the better choice due to its ability to move flexibly. This may lead to massive use of motorcycle powered by fossil fuel engine. Beside causing severe air pollution, this also causes high fuel consumption. Electric motorcycle is expected to be the answer for the both problems, since it does not cause air pollution and does not require fossil fuel to operate. However, this motorcycle solely depends on energy stored in battery that needs some time to recharge. This difficulty makes the good points of electric motorcycle unattractive. The development of battery with high capacity and requires shorter time to charge is still on process. Therefore, optimal battery energy use is another solution for this case. This may be assisted with instrumentation system that presents some useful information for the driver regarding real-time system operating condition. This paper presents development of instrumentation system including data acquisition that employs a microcontroller of Arduino Mega. A number of sensors are employed in the system including hall-effect sensor, current and voltage sensors. The system is implemented in a motorcycle powered by 1000 W, 48/36 V DC motor energized by 17.5 Ah 48 V Lithium-Ion Battery. Some measured data are processed and presented in an LCD in the dashboard, including RPM, speed, torque, the distance travelled, the remaining battery capacity and the distance that may still be achieved. An automatic data logger of DS3231RTC is used for recording the data and it is saved in a SD Card Memory. For verification purpose, the displayed data are benchmarked with those measured with standard measurement devices. It was confirmed that the data presented by the instrumentation system is sufficiently accurate.
Keywords: Data Acquisition- Instrumentation System- Real-time Operating Condition- Optimal Energy Use- Data Accuracy
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| Corresponding Author (Agus Ulinuha)
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173 |
Engineering |
ABS-361 |
Machine Learning Approach for Rhizomes Classification Based on Color Bayu Agustian, Maimunah
Universitas Muhammadiyah Magelang
Abstract
Rhizome plants that are often used as traditional ingredients or herbs such as temu hitam, temulawak, and temumangga. The types of rhizome are similar in color, shape, and odor feature. In this study, the types of rhizomes based on their color were classified into three classes, namely temu hitam, temulawak, and temumangga. The color of the rhizomes is obtained from image which is taken using camera. Image feature extraction process is done to get the color characteristics of the image by calculating the image RGB value. The values that have been obtained are classified using several methods in machine learning, namely Decision Tree, Naive Bayes, and KNN. The amount of data used in this study was 120 for all classes with the ratio of the number of training data and testing data is 70% and 30%. At the beginning of the classification stage, data cleaning is carried out then make training data and testing data to create a classification model. The classification results obtained the accuracy value of each method and then the method with the best accuracy was selected.
Keywords: machine learning, classification, herbal plant
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| Corresponding Author (Maimunah Maimunah)
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174 |
Engineering |
ABS-367 |
Optimization Algorithm for Digital Payments of Online Transportation Fatkhur Rohman, Endah Ratna Arumi
Universitas Muhammadiyah Magelang
Abstract
Online transportation applications have been widely used by all people. Various kinds of information / news about online transportation on online news sites such as the development of application features, their impact on society, competition between online transportation developer applications, and digital payments. Related topics user experience in using transportation applications online, the experience of the driver^s side too many presented. Decision Tree algorithm is used as an algorithm for classification. The decision tree consists of several nodes, namely the tree root, internal nodes, and leaves. The concept of entropy is used to determine which attributes will split the tree. In the Decision Tree algorithm, each node internally divide the space into two or more in accordance with a discrete function of the attribute value input. In the case of the simplest and most often, each test it as a single attribute, so that the empty space is partitioned adjusted to the value of the attribute. The process of data classification determines the most optimal solutions appropriate data to analyze trends in user experience to make payments online digital transport. The results of this research has been done can be concluded that in the last 3 years, there are 108 negative news, positive news 115, and 142 neutral news which is the content of the online news that talks about digital payment. From the overall news is found, the highest rating on the news about OVO applications where the error occurs at the time of purchase and top up.
Keywords: decission tree, algoritm, digital payment, online transportation, classification
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| Corresponding Author (Fatkhur Rohman)
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175 |
Engineering |
ABS-112 |
Corrosion study of graphene coatings on carbon steels Hafid Suharyadi, Toegas Soegeng Soegiarto, Umi Yuliatin
Politeknik Energi dan Mineral Akamigas, Ministry of Energy and Mineral Resources
Abstract
The functionalized graphene with epoxy was applied on carbon steel pipes ASTM A53 grade B. The corrosion properties of coated and uncoated carbon steels were evaluated using a three-electrode cell system in NaCl solution at room temperature. The findings suggest a shift of corrosion potential value, a decrease of corrosion current density and corrosion rate, and an increase of inhibition efficiency by applying graphene-epoxy coatings on the substrate. This is attributed to the role of functionalized graphene networks that hinders chloride ions penetrate into the carbon steel surface.
Keywords: graphene, epoxy, composite coating, corrosion, carbon steel
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| Corresponding Author (Hafid Suharyadi)
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176 |
Engineering |
ABS-114 |
Modeling of Spray Characteristics of Biodiesel Based on Vegetative Energy Resources Found in Tropical Forest inside Leuser Area Teuku Azuar Rizal, Hamdani, Taufan Arif Adlie
Department of Mechanical Engineering, Universitas Samudra
Abstract
The depleting reserves of fossil fuels encourage the arrangement of biodiesel as an increasingly popular alternative. The fuel is also more environmentally friendly, and at the same time, low in emission content. The source of biodiesel feedstock is also easily found in tropical forests in Indonesia. This paper try to investigate the behavior of biodiesel spray inside the combustion chamber. The research utilizes software Diesel RK to perform a computer simulation that will show biodiesel spray behavior. The simulation depicts that the density and/or kinematic viscosity of the biodiesel contributes inversely to the desired model of biodiesel spray.
This research delivers an alternative point of view related to unique Indonesian biodiversity related to energy issues. The rain forest can become a highly potential complementary energy resource. It provides the local community with different energy buffer as a stock of a relatively close source of energy.
Keywords: modeling- spray-characteristics- biodiesel- vegetative-energy-resources- diesel-RK
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| Corresponding Author (Teuku Azuar Rizal)
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177 |
Engineering |
ABS-370 |
Optimize Design Impeller To Increase Efficiency Centrifugal Pump That Functioned As A Turbine Use Computational Fluid Dynamics (CFD ) Akhmad Fauzan Al Ansory(a*) , Istianto Budhi Rahardja(b)
a) Faculty Engineering ,Sekolah Tinggi Ilmu Teknik Bina Putera, 46321, Indonesia
*fauzana_pato[at]yahoo.co.id
b) Process Technology Plantation Products, Politeknik Kelapa Sawit Citra Widya Edukasi, 17520, Indonesia
Abstract
A centrifugal pump is used for water trubine from the pump channels. The technology of the pump as turbine is expected to provide an alternative energy solutions for the manufacture of micro hydro small scale and costs more economical and affordable.
The purpose of the study is know the influence of modelling the geometry on the impeller centrifugal pumps that can affect the performance of Pump As Turbine (PAT) with the value of the surface roughness of the impeller 0,16mikrometer using forward blade close impeller model. The methode of research analysis design and fluid flow at the impeller by use CFD software.
Keywords: Pump As Turbin, Computational Fluid Dynamics, backward impeller
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| Corresponding Author (Istianto Budhi Rahardja)
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178 |
Engineering |
ABS-116 |
Internet-Based Multi Platform Thermometer Using WhatsApp and Sensor MLX90614 With Location Tracker Feature For Covid-19 Surveillance Putra Wisnu Agung Sucipto, Annisa Firasanti
Program Studi Sarjana Teknik Elektro, Fakultas Teknik, Universitas Islam 45, Bekasi, Indonesia
Abstract
Daily monitoring of symptoms of high fever and contact tracing are the main steps in early detection of COVID-19 transmission. A person who is suspected of being infected with COVID-19 with symptoms of a high fever based on a record of his body temperature scan, must as soon as possible get activity surveillance. People with high fever symptoms should get detailed supervision regarding their movement so as not to pose a more severe risk. This study offers a non-contact human body temperature scanning technology without touching the skin, along with the ability to remember the identity of a person with high fever symptoms and the ability to trace his position immediately after the scan occurs. This feature is attached to a digital thermometer prototype that works on multi-platform operating systems. In addition, this technology is able to remotely distribute internet-based temperature scans using the WhatsApp social media network. Based on the results of trials that have been carried out on scanning human body temperature, this thermometer has worked as expected. The results of the temperature scan by the MLX90614 sensor which work in conjunction with Arduino and SIM900, have been able to send temperature data to the WhatsApp application. We have developed a regression formula for an additional treatment in the calibration of temperature measurements. The time required for the process of sending temperature data from the MLX90614 sensor to the WhatsApp application on the smartphone varies from 1 to 3 seconds.
Keywords: Fever, Position, MLX90614, WhatsApp, COVID-19
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| Corresponding Author (Putra Wisnu Agung Sucipto)
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179 |
Engineering |
ABS-118 |
ANP And AHP Method Approach In Selecting Tourism Objects In Samarinda Noor Alam Hadiwijaya- Arbain
Politeknik Negeri Samarinda
Abstract
The tourism sector is a sector that can be relied on in economic growth in an area, especially in the city of Samarinda. Apart from being one of the centers of education, Samarinda is also part of a tourist destination city in East Kalimantan. The objectives to be achieved in this research are to analyze and design, as well as to find out as well as compare the outputs or rankings of the two methods that will be used in supporting decisions for the selection of tourism attraction in Samarinda..
The determination of criteria and sub-criteria in this study was carried out through literature studies, surveys and interviews with relevant stakeholders, especially at the Samarinda Tourism Office. Furthermore, the criteria are given a pairwise comparison assessment with a preference between 1-9 for the AHP method, then the ANP method will add inner/outer dependence and feedback between the criteria.
The results to be obtained in this study can determine the best tourism object from several existing alternatives based on ranking as well as to determine the comparison of the final result (output) or ranking or based on each of the existing criteria of the two methods whether the same or different.
Keywords: Tourism Attraction, ANP, AHP, Multi-criteria decision-making
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| Corresponding Author (Noor Alam Hadiwijaya)
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180 |
Engineering |
ABS-122 |
The effect of using sawdust as mixture of concrete pipe on water absorption and compressive strength Ayende (1), Hernawan Novianto (2)
(1) Energy and Mineral Polytechnic of Akamigas
Jln. Gajah Mada No. 38 Cepu, Blora
ayende2018[at]gmail.com
(2) Energy and Mineral Polytechnic of Akamigas
Jln. Gajah Mada No. 38 Cepu, Blora
hernawannovianto80[at]gmail.com
Abstract
This article describes an experimental study of the effect of using sawdust as a mixture of concrete pipe on water absorption and compressive strength. This research was inspired by amount of sawdust waste from sawmills that had not been utilized. For this purpose 18 specimens were made with four different values for sawdust : iron ore (5%, 10%, 15%, and 20%). Each specimen has the composition of cement : iron ore (1:4), and water : cement (0,5%). The research was conducted at PT. Indal Steel Pipe. This reaserach to analyze the effect of using sawdust as a mixture of concrete pipe on wtaer absorption and compressive strength. Experimental methode using compression test and water absorption test has been usedto this study. Main finding from this study showed the higher the composition of sawdust increased water absorption and reduced the compressive strength of the concrete pipe. This study will be useful to reduce waste pollution and improved concrete pipe material in term of production cost.
Keywords: sawdust, concrete pipe, water absorption, compressive strength
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| Corresponding Author (Ayende Ayende)
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