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4th Novel Intelligent and Leading Emerging Sciences Conference, NILES 2022

作者： Hafez, Hussien A. Guaily, Amr Gamal Abdel Rahman, Mohamed M. Cairo University Faculty of Engineering Aerospace Department Giza12613 Egypt Mechanical Engineering Program Faculty of Engineering and Applied Sciences Nile University Giza ShaikhZayed City Egypt Nile University Egypt

ISBN: (数字)9781665452410

ISBN: (纸本)9781665452410

The contribution of the present work is to develop a simple, yet efficient, capturing technique to be used with flapping wings during numerical simulation using Eulerian grids. The developed technique is based on the simplicity of the geometry of the flapping wing model. The results of the proposed technique are successfully compared with other well-known capturing techniques namely, Sum of Angles and Modified Polygon techniques. The developed technique also showed that it can lower the running time into half. © 2022 IEEE.

关键词： Numerical methods

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Development of Color Detection Based on Camera Infrared Filter with Python Image Processing 22

Development of Color Detection Based on Camera Infrared Filt...

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22nd IEEE Student Conference on Research and Development, SCOReD 2024

作者： Leonardy, Joshu Aflah, Nawal Zuhdaniel Salim, Mohd Rashidi Bin Ibrahim, Mohd Haniff Bin Manap, Hadi Bin Tresna, Wildan Panji Universiti Teknologi Malaysia Faculty of Electrical Engineering Johor Bahru Malaysia The Republic of Indonesia Defense University Military Physics Study Program Bogor Indonesia University Malaysia Pahang Al Sultan Abdullah Faculty of Electrical & Electronic Engineering Technology Pekan Malaysia National Research and Inovation Agency Indonesia Research Center for Photonics South Tangerang Indonesia

ISBN: (纸本)9798331510077

This research explores the use of a modified infrared (IR) camera equipped with a high-pass filter to distinguish between natural objects (vegetation) and artificial objects (synthetic military uniforms) in an environment where vegetation makes objects difficult to detect. In military operations, especially guerrilla warfare in tropical forests, detecting enemies camouflaged in vegetation makes it difficult to distinguish targeted objects. Visible light cameras usually struggle to distinguish between synthetic and natural colors. This methodology involves the use of Python programming and various libraries, such as Computer Vision (CV), to process images captured by modified cameras. A graphical user interface (GUI) was developed to analyze color values, focusing on the red, green, and blue spectra. The results show that the modified IR camera can more effectively separate synthetic and natural object color peaks compared to a standard visible light camera, offering potential applications in military reconnaissance and sniper operations. This research demonstrates how image processing can improve object detection in complex environments. © 2024 IEEE.

关键词： High pass filters

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Secure E-Voting System for Student Associations in Private University Using Paillier Algorithm

Secure E-Voting System for Student Associations in Private U...

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Student Conference on Research and Development (SCOReD)

作者： Ivan Tenusa Eunike Endariahna Surbakti Fenina Adline Twince Tobing Adhi Kusnadi Informatics Study Program Informatics and Engineering Faculty Universitas Multimedia Nusantara

ISBN: (数字)9798350318821

ISBN: (纸本)9798350318838

The representatives of student associations at Private University are entrusted with the responsibility of empowering, facilitating, and nurturing the growth of the students, lecturers, and alumni within their respective programs. If the elected representatives do not align with the general consensus, problems are bound to arise. Therefore, student participation during the annual voting period is of utmost importance. When voting participation is low, the risk of the majority voice not being heard increases. Data from the General Election Commission in the private university reveals that among the four student associations in the Tech and IT faculty, three of them have a participation rate lower than 50%.This research aims to develop an E-Voting system for Student Associations within the university, with the intention of replacing the currently utilized Google Form system and enhancing student participation in future voting periods. While constructing an electronic voting system, the security and confidentiality of participants are vital. The Paillier homomorphic encryption algorithm is employed in the system to encrypt and decrypt voting messages sent by voters, ensuring their confidentiality. This algorithm was chosen due to its relative recency, speed, and relevance to this research in comparison to other algorithms. A user acceptance test conducted using the Technology Acceptance Model (TAM) has demonstrated that the application has been successfully developed, with user assessments of 87.50% for perceived ease of use, 72.27% for perceived usefulness, 74.74% for behavioral intention, and 86.46% for actual usage.

关键词： Technology acceptance model Electronic voting systems Internet Cryptography Electronic voting Homomorphic encryption Research and development

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RFI measurements at Bosscha observatory to prepare a new VGOS station

RFI measurements at Bosscha observatory to prepare a new VGO...

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2023 International Symposium From the Universe Back to Earth: Developing Astronomy to Meet Today's Natural Challenges

作者： Ramadhan, S. Hidayat, T. Suryana, J. Romadhoni, A. Kurniasari, M. Bosscha Observatory Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Indonesia Astronomy Study Program Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Indonesia Laboratory of Radio and Microwave Telecommunication School of Electronics and Informatics Engineering Institut Teknologi Bandung Indonesia

A new VGOS (VLBI Global Observing System) radio telescope will be constructed at Bosscha Observatory Lembang, West Java, in cooperation between Shanghai Astronomical Observatory (SHAO) and Institut Teknologi Bandung. One of the preparation steps is to conduct RFI (Radio Frequency Interference) measurements to obtain the RFI environment from the vicinity of the observatory. In this work, we report preliminary measurements of the RFIs that were done for several days in August and September 2023. Instruments used includes: A-INFOTM LB-20180 horn antenna, Wright TechnologiesTM low noise amplifier, and AaroniaTM Spectran V5 80200 OEM spectrum analyzer. The frequency range of 2.0 - 18.0 GHz is targeted referring to VGOS frequencies. Measurements in one day are carried out for about 24 hours in eight cardinal directions and two polarizations. The results and analysis are presented in spectral power flux density plots. © Published under licence by IOP Publishing Ltd.

关键词： Observatories

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Project Managers' Perspectives on the Complexity of Construction Megaproject in Indonesia: A Multicase study

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IEEE engineering Management Review 2021年第2期49卷 153-171页

作者： Damayanti, Retno Wulan Hartono, Budi Wijaya, Andi Rahadiyan Industrial Engineering Program Mechanical and Industrial Engineering Department Universitas Gadjah Mada Yogyakarta55281 Indonesia Engineering Faculty Universitas Sebelas Maret Surakarta57126 Indonesia

Complexity has become an inseparable characteristic of construction megaprojects. Moreover, it has been identified as the cause of failure of megaprojects by practitioners. Researchers continue to explore complexity in megaprojects and are attempting to address it. This article aims to define complexity, examine its aspects, and look at the management approach in Indonesia's construction megaprojects from the project manager's perspective. The article is conducted based on the available literature and case studies in three Indonesian infrastructure megaprojects: the Trans-Island Highway, Indonesian Light Rail Transit, and Indonesian International Airport. This article notes that as practitioners, project managers are still focused on megaproject complexity from a negative perspective, perceiving it as an obstacle despite the fact that complexities can present positive opportunities. Complexity can be categorized into three aspects, namely, structural, social, and emergent. In this context, this report examines complexity management by studying various unique cases of Indonesian megaprojects. This article provides insight and knowledge to researchers with regard to aspects of management and megaproject complexity, especially in developing countries. For practitioners, this article provides management approaches that can be considered in the management of megaprojects. © 1973-2011 IEEE.

关键词： Developing countries

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Identification of benefits, challenges, and pathways in E-commerce industries: An integrated two-phase decision-making model

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Sustainable Operations and Computers 2023年第1期4卷 200-218页

作者： Gupta, Srikant Kushwaha, Pooja.S. Badhera, Usha Chatterjee, Prasenjit Gonzalez, Ernesto D.R. Santibanez Department of Operations and Decision Sciences Jaipuria Institute of Management Jaipur India Department of Business Analytics Jaipuria Institute of Management Indore India Department of Business Analytics Jaipuria Institute of Management Jaipur India Department of Mechanical Engineering MCKV Institute of Engineering West Bengal 711204 India Post-Doctoral Fellow Management Graduate Program Universidade Paulista Indianópolis Campus Brazil Department of Industrial Engineering and CES 4.0 Faculty of Engineering University of Talca Curico Chile

The e-commerce industry has seen significant growth over the past decade as it focuses on convenience and accessibility, leading to a surge in online shopping with more and more consumers opting for it. At the same time, the e-commerce industry faces various challenges. In order to fully harness the potential of this industry, it is important to identify its benefits and challenges and focus on pathways to mitigate the challenges and harness its growth. This study utilizes the Delphi approach and involves experts from the e-commerce domain to get their opinions to identify the top ten benefits, challenges, and pathways for the e-commerce industry. Analytic Hierarchy Process (AHP) and Criteria Importance Through Intercriteria Correlation (CRITIC) methods are subsequently, employed to prioritize the identified factors. Results of the study revealed that factors such as affordable advertising & marketing;availability and product variety;and Global reachability are the most important benefits, while technological upgradation;returns or refunds;and counterfeit products posed the greatest challenges for the industry. Government compliance check;better relationship with delivery partners;and strong data privacy and online security policies emerged as the best pathways. This study also provides valuable insights to businesses, policymakers, and researchers in the e-commerce industry on how to navigate the benefits, challenges, and pathways of this rapidly growing sector. © 2023

关键词： Electronic commerce

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Propolis nanoemulsion extract from celebes stingless bee (Tetragonula biroi) phytochemistry and antibacterial analysis to periodontopathogen bacteria

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Journal of Oral Biology and Craniofacial Research 2025年第3期15卷 576-584页

作者： Amalia, Nadya Rafika Budhy, Theresia Indah Ridwan, Rini Devijanti Rianti, Devi Bramantoro, Taufan Luthfi, Muhammad Ramadhani, Nastiti Faradilla Pramusita, Adya Putranti, Nurul Aisyah Rizki Nugraha, Albertus Putera Situmorang, Putri Cahaya Shariff, Khairul Anuar Nugraha, Alexander Patera Dental Health Science Study Program Faculty of Dental Medicine Universitas Airlangga Surabaya Indonesia Department of Oral and Maxillofacial Pathology Faculty of Dental Medicine Universitas Airlangga Surabaya Indonesia Department of Oral Biology Faculty of Dental Medicine Universitas Airlangga Surabaya Indonesia Department of Dental Material Faculty of Dental Medicine Universitas Airlangga Surabaya Indonesia Department of Dental Public Health Faculty of Dental Medicine Universitas Airlangga Surabaya Indonesia Department of Dentomaxillofacial Radiology Faculty of Dental Medicine Universitas Airlangga Surabaya Indonesia Department of Orthodontic Faculty of Dental Medicine Universitas Airlangga Surabaya Indonesia Faculty of Medicine Universitas Airlangga Surabaya Indonesia Biology Study Program Faculty of Mathematics and Natural Sciences Universitas Sumatera Utara Medan Indonesia School of Materials and Mineral Resources Engineering Engineering Campus Universiti Sains Malaysia Penang Nibong Tebal 14300 Malaysia

Background: Propolis from Sulawesi's stingless bees (Tetragonula biroi) contains antioxidants, more flavonoids than propolis from Apis bees, and the antibacterial ability. Objective: to examine the antibacterial properties of Propolis Nanoemulsion Extract (PNE), which is extracted from the Celebes Stingless Bee (T. biroi), in relation to the periodontopathogen bacteria such as Fusobacterium nucleatum (Fn), Porphyromonas gingivalis (Pg), Aggregatibacter actinomycetemcomitans (Aa), and Provotella intermedia (Pi). This investigation also examines PNE's phytochemistry, particle size analysis (PSA), and zeta potential. Methods: The maceration process with 96 % ethanol was used to create PNE from Celebes stingless bee (T. biroi), which was then subjected to zeta potential measurement and PSA. Phytochemical analysis was used to identify phytochemical constituents in the PNE (T. biroi). Diffusion zone, minimum bactericidal concentration (MBC), and minimum inhibitory concentration (MIC) were used to assess antibacterial efficacy against Aa, Pg, Pi, and Fn. Furthermore, the statistical analysis was used to extract the data. Results: Phenols, alkaloids, and flavonoids were identified;however, triterpenoids and saponins were not. Between 151.28 and 182.2 diameter nanometers (***) was the range of the PNE's diameter. At 1.56 % propolis (T. biroi) concentration, the MIC, MBC, and diffusion zone analysis performed better than at 0.76 %, with a significant difference (p:0.01;p < 0.05) to Aa, Pg, Pi, and Fn. Conclusions: The highest antibacterial activity against Aa, Pg, Pi, and Fn as periodontopathogen bacteria is demonstrated by alkaloids, flavonoids, and phenols in PNE from Celebes (T. biroi) at a concentration of 1.56 %. © 2025 The Authors

关键词： Antibacterial Communicable disease Infectious disease Medicine Periodontal disease

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Numerical study on the wake characteristics of the Savonius turbine for shallow water application in Malaysia 7

Numerical study on the wake characteristics of the Savonius ...

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7th International Conference on Applications and Design in mechanical engineering, ICADME 2021

作者： Rajendran, K. Rahman, A. Suhri, G.E. Dass, L. Mechanical Engineering Program Faculty of Mechanical Engineering Technology Universiti Malaysia Perlis Perlis Malaysia

Since Malaysia is a country surrounded by bodies of water, tidal energy is one of the prospects that can be explored for energy extraction potential. While there are several turbine designs and technologies that have been used for tidal energy extraction, information on the use of Vertical Axis Tidal Turbine (VATT) for shallow water applications is very limited, while the implementation of Horizontal Axis Tidal Turbine (HATT) is not suitable due to Malaysia’s ocean depth. Therefore, this paper attempts to address this gap by analyzing the flow characteristics of the VATT in the working environment of shallow water in Malaysia. The first analysis compared the wake characteristics of the Savonius turbine model against a hypothetical ‘actuator’ cylinder, which is a representation of VATT. Next, the second study analyzed the wake characteristics between static and dynamic simulations of a Savonius turbine model. The outputs from this study were validated against previous work in order to gain a better understanding of the wake characteristics of a Savonius turbine. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Wakes

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Development Mobile Application Android Based for Sensor and Transducer 4

Development Mobile Application Android Based for Sensor and ...

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4th International Conference on Electrical, Electronics, Informatics, and Vocational Education, ICE-ELINVO 2021

作者： Hatmojo, Y.I. Azis, S.M. Electrical Engineering Education Study Program Faculty of Engineering Universitas Negeri Yogyakarta Indonesia

The aims of this research are: (1) producing a mobile applications android based for sensor and transducer field of study on vocational education;(2) know the quality of the product mobile applications android based for sensor and transducer field study on vocational education. The method used is the Software Development Life Cycle with the Waterfall model. The stages in Waterfall model are: (1) requirements definition;(2) system and software design;(3) implementation and unit testing;(4) integration and system testing;(5) operation and maintenance. The black box test results show the performance of Sensor application software can all function properly. While the results of the compatibility test show the application can run on various android systems (at least Android 4.2). © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Software design

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Development of Human Machine Interface (HMI) Training Kit as A Learning Media for Industrial Automation engineering Practical Courses 3

Development of Human Machine Interface (HMI) Training Kit as...

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3rd International Conference on Electrical, Electronics, Informatics, and Vocational Education, ICE-ELINVO 2020

作者： Maryadi, T.H.T. Pramono, H.S. Hatmojo, Y.I. Prianto, E. Sunomo Electrical Engineering Education Study Program Faculty of Engineering Universitas Negeri Yogyakarta Indonesia

Learning media is one of the learning tools that is needed so that the learning process can run smoothly and students can have competencies in accordance with the expected competency goals. This paper discusses: (1) developing a Human Machine Interface (HMI) training kit as a learning medium in the Industrial Automation engineering Practical Course;(2) the performance of the HMI training kit;(3) the feasibility of the HMI training kit based on the assessment of media experts, material experts and student responses as training kit users. In developing this training kit using the ADDIE model which consists of Analysis, Design, Development, Implementation and Evaluation. Data collection was carried out by testing the performance of the media, and giving a questionnaire to media experts to assess the feasibility of the media aspect, a material expert questionnaire to assess the appropriateness of the material and a questionnaire to determine student responses as users. The data were analyzed by means of quantitative descriptive analysis which were then categorized. The result of this development is HMI practice learning media for industrial automation engineering practice courses which consist of HMI practice hardware, and jobsheets. The performance of the HMI training kit for input and output parameters, visualization of engine control in the form of buttons, sliders, output visualization, indicator lights, and overall graphics have a 100% correct performance. Based on media experts, design aspects, technical aspects and usefulness aspects were rated very well, so that overall the media aspect received an assessment in the very proper category Based on material experts, technical aspects and aspects of usefullness received an assessment in the very good category, so that overall the material aspect received an assessment in the very proper category. Based on assesment of students as users, the average score student response falls into the very good category. © 2021 Pub

关键词： Students

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