Article Per Year (5 Year)
p-Index From 2021 - 2026
5.951
P-Index
This Author published in this journals
All Journal TEKMAPRO Journal of Industrial Engineering and Management JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) The Journal of Pure and Applied Chemistry Research International conference on Information Technology and Business (ICITB) Briliant: Jurnal Riset dan Konseptual Journal of Research and Technology EKONOMIS : Journal of Economics and Business Jurnal Sistem Cerdas Jurnal Teknik Industri Terintegrasi (JUTIN) Budapest International Research in Exact Sciences (BirEx Journal) JURMATIS : Jurnal Manajemen Teknologi dan Teknik Industri Nusantara Science and Technology Proceedings Indonesian Journal of Industrial Engineering & Management Juminten : Jurnal Manajemen Industri dan Teknologi Journal La Multiapp Industrika : Jurnal Ilmiah Teknik Industri Jurnal Penelitian Inovatif Indonesian Journal of Innovation Studies Jurnal Pengbdian Teknik Mesin Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Journal of Social Commerce Eduvest - Journal of Universal Studies The Indonesian Journal of Computer Science Faraday: Journal of Fundamental Physics, Research, and Applied Science
Dira Ernawati
Unknown Affiliation
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Public Health Social Sciences Transportation

Published : 67 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search
Journal : Nusantara Science and Technology Proceedings

 1 
Simulation of Liquid Vapor Equilibrium in Batch Distillation Process from Cellulose (Bamboo) Sari Ni Ketut; Dira Ernawati
Nusantara Science and Technology Proceedings International Seminar of Research Month Science and Technology in Publication, Implementation and Co
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Simulation of batch distillation binary systems using matlab programming language, which results in the appearance of the graph using a spreadsheet tool, less effective and efficient, so it is necessary for the visualization of object-oriented programming language, in addition to easy to be developed at a time when that will come, it has other benefits, in a device project software can use a variety of programming language that supports object-oriented programming, such as C#.Net and VB.Net. This research aims to display the batch distillation simulation of visual binary systems using Mat lab programming. Ethanol-water azeotropic binary system examples and Acetone-Butanol, Acetone-Ethanol, Butanol-Ethanol zeotropic binary system examples, simulation of batch distillation with rigorous method using a model Differential-Algebraic-Equations (DAEs), where liquid vapor equilibrium in batch distillation process from cellulose (Bamboo) with Antoine equation. Profile of liquida composition and vapor composition function dimensionless can be displayed directly from the desktop, to have the azeotropic binary system value profile activity coefficient is not equal to one, while the binary system zeotropic approaching one. Profile of liquida composition and vapor composition maximum from binary system azeotropic is 0.98, while for the binary system zeotropic approaching one. Economically using Mat lab language faster, time efficiency and better performance profile.
Online Business Training in Marketplace for Beginner for Students of SMA Muhammadiyah 3 Surabaya Dira Ernawati; Tranggono
Nusantara Science and Technology Proceedings 4th International Seminar of Research Month
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2019.0454

Abstract

Current technological developments provide opportunities for the business world to develop very quickly. One of them is the increasingly widespread online business by utilizing the internet to conduct transactions and promotions. An online business can be an option for building a business. In the 2013 education curriculum, entrepreneurship is taught to all high school students to foster an entrepreneurial spirit from an early age. To support this government program and take advantage of the technological ease of communication devices and the internet, basic training in doing online business is carried out using only gadget devices that are very close to our daily lives. The purpose of this training is not only to bear young entrepreneurs but also to encourage students to do productive activities by utilizing student gadgets to starting an online business. The training was held at SMA Muhammadiyah 3 Surabaya with 45 participants. This training activity uses survey methods, lectures, and guided to create an account at Tokopedia. The target in this activity includes students being able to start a useful activity by doing online business using their gadget devices. Also, students can become graduates who have business skills that can create new jobs.
Supplier Selection Analysis of Rubber Raw Material Using TOPSIS Method Dira Ernawati; Yekti Condro Winursito; Lutvia Agustin
Nusantara Science and Technology Proceedings 2nd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Customer satisfaction is the main orientation of a company. To fulfill consumer desires, the company should pay attention to procuring raw materials and choosing the right supplier. Manufacturing companies have to think about how their products have added value compared to other companies. Company XYZ needs to determine the right strategy for purchasing rubber raw materials to increase the efficiency and effectiveness of the company. The method for analyzing the selection of suppliers of rubber raw materials is the TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) method with the weighting of the criteria obtained from the AHP calculation value. The TOPSIS method is used to sort alternative suppliers based on the closest distance from the alternative value to the positive ideal solution and the farthest distance from the perfect negative solution. The data processing results are compared to other suppliers with a value of 0.31088 and the distance of the farthest negative ideal solution from the others with a value of 0.22064. Rank 1: company C, Rank 2: company A, Rank 3: company E, Rank 4: company B, Rank 5: company D.
Supply Chain Performance Measurement in a Refractory Brick Industry Dira Ernawati; Sinta Dewi; Ni Ketut Sari
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2726

Abstract

Every company needs to optimize and improve its performance. Performance improvement strategies cannot be well formulated if there has never been a performance measurement itself before. Determining the overall condition of the company can be done by assessing the performance of the entire lines of the supply chain. The SCOR model is considered appropriate for complex supply chain activities because it has a measurement process of plan, source, make, deliver, and return. The scale for each process in the supply chain is different, so the Snorm De Boer normalization technique is applied to equalize the assessment units for each criterion. Based on the performance indicator (PI) calculation, six PIs scores are below the average performance. Those six Pis are raw material planning, production planning, planning cycle time, yield, product defect from production, and the number of equipment maintenance. The six PIs are assessment indicators for the planning process and production process, so an improvement of the management system for both activities is essential to be carried out immediately to improve overall supply chain performance.
Optimization of Glucose from Saccaromycess cerevicae Liquid Waste Using the Acid Hydrolysis Process Sari, Ni Ketut; Ernawati, Dira; Sari, Komang Nickita
Nusantara Science and Technology Proceedings 8th International Seminar of Research Month 2023
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4103

Abstract

Selection of Saccharomyces Cereviceae (SC) wastewater as a component produced by PT. Enero comes from a fermentation process that uses SC yeast, it’s availability is great and it has not been used as a raw material for glucose, which until now has been industrial waste. Efforts have been made to convert SC waste water into liquid fertilizer and biodiesel feedstock. The recovery of glucose from SC waste water in the chemical hydrolysis process using the reaction surface method (RSM), the hydrolysis process was carried out with a digital stirrer at a rotation speed of 200 rpm and the addition of 5 ml of 10% NaOH. The variables used were 50–250 mL SC waste water and 10–30 mL HCl volume. The optimization results using RSM of the chemical hydrolysis process are shown in three-dimensional graphs, pH and SC waste water ratio and HCl volume, glucose content and SC waste water ratio and HCl volume. The best results with SC waste volume of 8.58 mL and HCl volume of 34.14 mL achieved a pH of 4.38. In order to achieve a pH of 4.5, a hydrolysis process is carried out because the pH of the SC waste water is very acidic, i.e. 3.5, and 10% NaOH is added to increase the pH. The result of glucose from the hydrolysis process is 17.96%, the required volume of waste water SC of 137.14 ml, the addition of 34.14 ml of HCl as a raw material for the fermentation process. Based on the optimization results using RSM and chemical hydrolysis method, the glucose content is 17.96% and the pH is 4.38 with the SC water waste volume of 137.14 mL and the HCl volume of 34.14 mL.
Co-Authors Adhella Ika Putri Aditya Tri Pratama Afrul Mufdi Thobarsi agung setiawan Agustin, Melinda Dwi Akbar Sujiwa Akmal Suryadi Aldo Wicaksono Amel, Amelia Purbaningtyas Andita Rizki Ramadani Andy Dwi Feriansyah Aprilia Kurnia Ardysti, Amelia Ramadhani Arifano, Krisna Ramadhian Ayu Agustina Suryani Az Zahra, Ladya Cheril Bossa No Va Dewi Seda Mera Dodo Zulfikar Dyah Suci Perwitasari Erlina Erlina Erlina Purnamawati Fatmawati, Erliansa Febridan Dzulkifli Fitriyah, Jihan Hasbi Assiddiqi Hayati, Kinanti Resmi Hayati, Kinanti Resmi Iqbaal Ahmad Izzuddin Joumil Aidil Saifuddin Kuswara, Ramadana Esa Luky Noviansyah Lutvia Agustin M Satria Adiyatma Nugraha Maghfiroh, Marjiatul Mahardika Brave Revaldiwansyah Marbun, Chandra Ericson Maulana, Alfin Bima Maunah, Dewi Aisarunnisa' Mera, Dewi Seda Moch. Annas Hidayatulloh Mohammad Alfin Al Farih Mohammad Ridho Permana Muhammad Trisyadi Waluya Jati Nabilla Nabilla Nanang Teguh Teguh Ni Ketut Sari Nugraha , Isna Nugraha, Isna Nur Aini Fauziyah Nur Rahmawati Nur Rahmawati Nur Rahmawati Nuswantoro, Wira Yudha Perdiansyah, Muhammad Ilham Pradata, Amelia Putri Pradinain, Rizky Fadilla prakosa, albertus Adriyanto Raditya Y E Rafi Fadlurrahman Firjatullah Rahmadhani, Talitha Vania Riska Dewi, Nanda Riska Tia Wulandari Rizka Novitasari Rr. Rochmoeljati Sa'idan, Gading Adian Kun Safirin, Moch. Tutuk Sakiyatuddurriyah, Sakiyatuddurriyah Salsa Billa Kharisma Santi Wulandari Santika, Arum Sinda Sari, Komang Nickita Satya , Mas Tangguh Afritza Setiyadi, Nanda sholeha, fitriatus Sholihin, Farhan Aufa Sidabutar, Naomi Sinta Dewi Sinta Dewi Sudrajat, Oka Akbar Tauriza Alfiane, Revica Tranggono Tranggono Tranggono Yekti Condro Winursito