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4th International Conference on Vocational Education and Training, ICOVET 2020

作者： Rifqie Mariana, Rina Pujianto, Utomo Universitas Negeri Malang Culinary Education Study Program Malang Indonesia Universitas Negeri Malang Electrical Engineering Department Malang Indonesia

ISBN: (纸本)9781728181318

Several studies have shown that the expertise of young chefs graduating from culinary diploma programs in Indonesia who specialize in Indonesian food has not been able to demonstrate their expertise according to stakeholder needs. The implementation of the curriculum in certain subjects is expected to have an impact on the growing interest of students to take the course and will also affect work readiness in their fields. This study uses data mining techniques to process data obtained from closed instruments distributed to 60 students from 6 universities in Indonesia. As a result, there are some interesting patterns between curriculum management and the interests of young chefs that can be extracted from the data obtained. © 2020 IEEE.

关键词： Students

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The treatment of Raw Water Sources of Drinking Water using Chitosan/Mg/Al-LDH Composites: Problem cases in Municipal Waterworks in Banjarmasin

The treatment of Raw Water Sources of Drinking Water using C...

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Joint International Conference on Civil, Environmental, and Geo engineering 2019, JIC-CEGE 2019

作者： Irawan, C. Ramadhan, M.W. Nata, I.F. Putra, M.D. Chemical Engineering Study Program Engineering Faculty Lambung Mangkurat University Banjarbaru South Kalimantan Indonesia

A study was done on treatment of raw water sources for drinking water using chitosan/Mg-Al LDH (CS/Mg/Al-LDH) composites by adsorption process. An analysis on the adsorbent characterizations of FTIR, SEM and XRF showed that the CS/Mg/Al-LDH had many different functional groups and a high specific surface area for adsorption processes. The CS/Mg/Al-LDH showed high adsorption uptake capacity and selectivity for iron (Fe), turbidity, and colour in the raw water sources for drinking water in Municipal Waterworks in Banjarmasin. Therefore, the CS/Mg/Al-LDH composites have the potential to be used as an adsorbent in water and wastewater treatment. © Published under licence by IOP Publishing Ltd.

关键词： Potable water

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Design of sustainable green supply chain management using house of risk

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AIP Conference Proceedings 2024年第1期2952卷

作者： Lolyka Dewi Indrasari Ana Komari Afiff Yudha Tripariyanto Heribertus Budi Santosa Eko Siswanto Pamadya Vitasmoro Johan Alfian Pradana Venus Khatta Salsabilah Industrial Engineering Study Program Faculty Engineering Universitas Kadiri Kediri Indonesia

The continued role of the green management supply chain has become a parameter of the company’s sustainability. The role that is realized is to provide effectiveness in terms of reducing risks arising from the supply chain. Risks that arise deserve to be identified by the achievement of reducing supply chain risks that occur. The purpose of this study is to model the risks of green supply chain management using the house of risk method. This method as an integration of FMEA-QFD. The product used as a case is snail chips from PT. QRP. Due to the ineffective supply chain, various risks arise where this risk in addition to harming the company also harms the snail material supply vendors. Identification of risks by occurrence and risk agents totaling 22 types. The findings serve as a basis for constructing potential risks modeled with a causal diagram. It was found that the highest case parameter was that there was poor communication with long responses, one of which was. As a result of this case, the prevention action indicator can be clearly known with consideration of 6M (man, machine, material, measurement, method and mother nature). That the preventive action relationship with 6M can create a green supply chain design according to existing conditions. The virtues of the design formed are considering 6M supported by the role of ISO.

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Catalytic cracking of polyethylene terephthalate (PET) plastic waste and palm fibre mixtures using Ni-USY zeolite catalyst 6

Catalytic cracking of polyethylene terephthalate (PET) plast...

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6th International Conference on Mathematics, Science, and Education, ICMSE 2019

作者： Nazarudin Jayanti, N. Alfernando, O. Prabasari, I.G. Ulyarti Sarip, R. Chemistry Engineering Study Program Faculty of Engineering Universitas Jambi Indonesia Center of Energy and Nanomaterial Study Universitas Jambi Indonesia Agricultural Product Technology Study Program Faculty of Agricultural Technology Universitas Jambi Indonesia Chemistry Department Faculty of Science University of Malaya Malaysia

This research was carried out to produce fuel (Oil Liquid Poduct/OLP) from catalytic cracking of a mixture of Polyethylene Terephthalate (PET) and fiber waste from palm oil. USY zeolite was previously ion-exchanged by three levels of Ni-metal concentration (1%, 2%, 3%) before used as catalyst in the cacking process. The catalytic cracking was carried out at rasio of sample to catalyst was 6:1, three levels of temperature (400°C, 425°C and 450°C) and three levels of reaction time (10, 20 and 30 minutes).The SEM images and EDX spectra of Ni-USY zeolite catalysts showed that all catalysts were in crystalline form of FAU framework. The highest of OLP percentage, 24.5%, was produced by catalytic cracking at 450°C for 10 minutes using Ni-USY prepared by ion-exchange using 2% concentration of Nickel Nitrate solution. © Published under licence by IOP Publishing Ltd.

关键词： Catalysts

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Method on utilization of low quality biogas as a fuel for 4 stroke spark ignition engine of electric generator 11th

Method on utilization of low quality biogas as a fuel for 4 ...

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11th International Conference on Materials and Manufacturing Technology, ICMMT 2020

作者： Negara, I Gede Artha Nindhia, Tjokorda Gde Tirta Surata, I. Wayan Nindhia, Tjokorda Sari Shukla, Shailendra Kumar Master Student at Study Proram of Master in Mechanical Engineering Udayana University Denpasar Bali80361 Indonesia Study Program of Mechanical Engineering Engineering faculty Udayana University Jimbaran Bali80361 Indonesia Faculty of Veterinary Medicine Udayana University Denpasar Bali80113 Indonesia Departmen of Mechanical Engineering IIT Banaras Hindu University Varanasi221005 India

ISBN: (纸本)9783035737226

Biogas quality in many installation of anaerobic digester for processing organic waste are found not optimum, especially in developing country where understanding of anaerobic processing is not well known. The methane content in the biogas are usually low that make it not possible to be utilized as a fuel of the engine. Biogas Purification usually will be introduced as a solution. But this idea is about complicated for simple or small anaerobic digester. Other solution is suggested by using enrichment of biogas by using other fuel such as hydrogen or blended with city gas such as LPG gas. But for preparing hydrogen gas or commercial will also costly. This research introduces simple technique for biogas enrichment by using denatured alcohol. The biogas contents were found around 30% vol. methane (CH4) and around 2% Carbon dioxide (CO2). The price of denatured alcohol is relative cheap because the selling tax is not as much as drinking alcohol. Engine with bigger combustion (420 cc) chamber was prepared for this purpose to make possible to be fuelled with biogas. The compression was set to reach 10 bar. The clearance of the both intake and exhaust valve was set in order to be possible to be running by using biogas. The biogas-air mixer was design for this purpose. The carburetor was set for use of denatured alcohol. It is found that the engine is running well by using biogas fuel that is enriched by using denatured alcohol. The emission was found better comparing using gasoline for the same engine. The fuel consumption is reported for future economic analyses. © 2021 Trans Tech Publications Ltd, Switzerland.

关键词： Carbon dioxide

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Aluminium Recovery from Water Treatment Sludge as Coagulant by Acidification 1

Aluminium Recovery from Water Treatment Sludge as Coagulant ...

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1st International Conference on Environment, Sustainability Issues and Community Development, INCRID 2019

作者： Ruziqna, D.P. Suwartha, N. Moersidik, S.S. Adityosulindro, S. Environmental Engineering Study Program Department of Civil Engineering Faculty of Engineering Universitas Indonesia Depok16424 Indonesia

Aluminium in water treatment sludge can be recovered as coagulants by acidification method. However, there are some factors that affect efficiency in recovering aluminium, such as stirring speed during acidification, pH, and sludge characteristic. This study aims to find the optimum acidification stirring speed in recovering alum and to evaluate the performance of recovered coagulant compared to a pure coagulant. Aluminium recovery is carried out by adding sulphuric acid until the pH of the sludge reaches 2.5. The acidic sludge is stirred for 30 minutes, with acidification stirring speed is varied from 240-720 rpm, and left for settling until the supernatant is formed. The supernatant was used as a recovered coagulant, examined using a jar test to determine the optimum dose, and compared with the pure coagulant. The results show that the optimum acidification stirring speed was obtained at 540 rpm, where mass balance shows aluminium recovery efficiency of 16.5%. The optimum dose for recovered coagulant was 25 ppm, with a turbidity reduction of 93.38% in jar test. While the optimum dose for pure alum was 20 ppm, with turbidity reduction of 93.26%. Though potentially reduced higher turbidity, the recovered coagulant has slightly lower quality than the pure coagulant, which required a higher optimum dose. © 2020 IOP Publishing Ltd.

关键词： Acidification

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Identification of the IOC-UNESCO Tsunami Ready Indicator to Improve Coastal Community Preparedness for Tsunami Disaster in Batukaras Village, Pangandaran Regency, Indonesia

Identification of the IOC-UNESCO Tsunami Ready Indicator to ...

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IEEE Asia-Pacific Conference on Geoscience, Electronics and Remote Sensing Technology (AGERS)

作者： Rika Prillya Mustafida Nikita Veronica Aufa Qoulan Karima Candida Aulia de Silva Nusantara Wiwin Windupranata Master Program of Geodesy and Geomatics Engineering Institut Teknologi Bandung Bandung Indonesia Study Program of Geodesy and Geomatics Engineering Institut Teknologi Bandung Bandung Indonesia Research Group of Hydrography Institut Teknologi Bandung Bandung Indonesia

Batukaras Village is a village located in Cijulang District, in the southern part of Pangandaran Regency, West Java. Batukaras is one of the tourist destinations that have the potential to be visited by the tourist because of its beautiful view and potential economic income from the fishery. Beyond the potential for natural beauty, Batukaras Village also has the potential for disaster. One of them is the tsunami caused by the earthquake, with a magnitude of 7.7 in 2006. The Pangandaran tsunami on July 17 became a memorable disaster for the local community. It reached a height of 21 meters. It has left more than 300 people dead, 301 seriously injured, 551 slightly injured, and 156 missing, accompanied by huge property losses. Batukaras Village community has implemented 12 tsunami ready indicators IOC-UNESCO. Therefore, this study aims to map 12 tsunami ready IOC-UNESCO indicators in Batukaras Village to evaluate which indicators the government and community of Batukaras Village. The field survey and interviews are done to obtain data to identify the 12 tsunami ready indicators in Batukaras Village. Based on the IOC-UNESCO tsunami indicator mapping results, Batukaras Village has fulfilled 11 of the 12 indicators set. Based on the identification result, the village government has not yet fulfilled indicator five. Therefore the ITB Research and Community Service Institute (LPPM) team assisted in making an evacuation route map to fulfill these indicators. However, in the future, the Batukaras Village government, assisted by the entire community, can be committed to maintaining and improving all existing disaster preparedness assets.

关键词： Meters Economics Java Government Earthquakes Sea measurements Tsunami

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Unlocking development of green hydrogen production through techno-economic assessment of wind energy by considering wind resource variability: A case study

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International Journal of Hydrogen Energy 2025年 138卷 1249-1262页

作者： Hesty, Nurry Widya Aminuddin Supriatna, Nina Konitat Cendrawati, Dian Galuh Nurliyanti, Vetri Nurrohim, Agus Fithri, Silvy Rahmah Niode, Nona Al Irsyad, Muhammad Indra Research Center for Energy Conversion and Conservation National Research and Innovation Agency KST Habibie Serpong Tangerang Selatan153432 Indonesia Research Center for Process and Manufacturing Industry Technology National Research and Innovation Agency KST Habibie Serpong Banten Tangerang Selatan153143 Indonesia Magister of Industrial Engineering University of Mercu Buana Jakarta11650 Indonesia Departement of Mechanical Engineering Universitas Indonesia 16424 Indonesia Survey and Testing Center for Electricity New Renewable Energy and Energy Conservation Technology Ministry of Energy and Mineral Resources Jakarta12230 Indonesia Study Program of Advanced Climatology Departement of Geophysics and Meteorologi IPB University Bogor16680 Indonesia Research Center for Behavioral and Circular Economics Jl. Gatot Subroto No.10 Jakarta12710 Indonesia

Generating hydrogen from renewable energy sources is widely recognized as an effective strategy for addressing critical challenges in the energy sector while contributing to the reduction of greenhouse gas emissions. This study aims to assess the wind energy potential for electricity and hydrogen production in five locations on Sumba Island using 10 years (2011–2020) of data from the NASA's POWER Project. A wind variability assessment was performed on five wind turbines ranging from 500 kW to 1.5 MW and using electrolysis technology. The results indicated a hydrogen production potential of 25–57 tons per year. Economic analysis of hydrogen production for Haharu reveals an attractive internal rate of return (IRR) of 43% with a payback period (PBP) of 2.25 years and a net present value (NPV) of 1.3 MM USD, the levelized cost of electricity (LCOE) of 0.0241 USD/kWh, and the levelized cost of Hydrogen (LCOH) of 1.01 USD/kg. Sensitivity analysis underscores the critical influence of investment and revenue on project profitability, highlighting their substantial impact on determining a project's success or failure. These findings emphasize the potential of Sumba Island as a hub for sustainable energy production to meet the growing demand for clean and renewable energy sources. © 2024 Hydrogen Energy Publications LLC

关键词： Clean energy

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Optimization of Certainty Factor Algorithm to Overcome Uncertainty in Expert System Identification of Pests and Diseases of Cocoa

Optimization of Certainty Factor Algorithm to Overcome Uncer...

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Electronic and electrical engineering and Intelligent System (ICE3IS), International Conference on

作者： Rakhmat Dedi Gunawan Imam Ahmad Parjito Harry Anggono Ego Hengki Vernando Firman Jaya Faculty of Engineering and Computer Science Universitas Teknokrat Indonesia Bandarlampung Indonesia Information Technology Education Study Program STKIP PGRI Situbondo Indonesia

ISBN: (纸本)9781665465427

Lampung Province is one of the regions with the highest cocoa production, but many factors can interfere with cocoa production. One of them is the factor of pests and diseases of cocoa that cannot be identified and prevented beforehand. An expert system is a system that adopts expert knowledge or experts in a particular field. However, the diagnosis usually contains uncertainty in the form of answers and statements used. Certainty Factor (CF) algorithm, is one of the algorithms that is able to overcome uncertainty by providing a value for the level of trust from experts and users. However, because the CF value is based on the level of confidence in the symptoms experienced by the user, it creates a problem, namely the consistency of the user's answers. So, it is necessary to make improvements to the CF algorithm, to overcome the inconsistency of user answers through the use of Consistency Ratio (CR). Through the use of CR, inconsistencies are overcome through comparisons between the consistency index and the random index. Based on the results of the accuracy test, the proposed model is able to produce an accuracy rate of 86.67% in the diagnosis of pests and diseases on cocoa plants.

关键词： electrical engineering Deep learning Uncertainty Production Indexes Expert systems Intelligent systems

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Application for Airport Tenant Selection Using Weighted Product-based Decision Support System

Application for Airport Tenant Selection Using Weighted Prod...

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2023 International Conference on electrical and Information Technology, IEIT 2023

作者： Sumari, Arwin Datumaya Wahyudi Saputra, Muhamad Andika Ayuningtyas, Astika Sudarmadi, Catur Adisutjipto Institute of Aerospace Technology Aerospace Intelligent System and Data Engineering Research Group Yogyakarta Indonesia Politeknik Negeri Malang Cognitive Artificial Intelligence Research Group Malang Indonesia Adisutjipto Institute of Aerospace Technology Informatics Study Program Faculty of Industrial Technology Yogyakarta Indonesia Adisutjipto Institute of Aerospace Technology Aerospace Health Informatics Research Group Faculty of Industrial Technology Yogyakarta Indonesia

ISBN: (纸本)9798350327298

This research aims to develop an application for selecting the best new tenant at PT Angkasa Pura II Sultan Thaha Jambi Airport Branch by utilizing Weighted Product (WP) method as the decision support system. Our approach is descriptive research with data analysis technique using four prospective tenants coded A-1 to A-4. The data was collected through observation, interviews, documentation, and literature study. The steps for selecting the best new tenant using the WP method include determining the criteria, sorting the suitability of alternatives and criteria, determining the weight of each criterion and its normalization, calculating the score, S value as an alternative preference, and calculating the ranking, V value as the final alternative preference. Based on the final calculation results, the new tenant coded A-4 is the best alternative based on the data collected from the Financial Management (FHFM) Unit and the Commercial Unit, with a value of V-4 is 0.294. © 2023 IEEE.

关键词： Decision support systems

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