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1st International Conference on Vocational Education of Mechanical and Automotive Technology, ICOVEMAT 2018

作者： Ardhian Syah, Dhany Nuryanto, Apri Electrical Engineering Education Study Program Faculty of Engineering Yogyakarta State University Indonesia

This study aimed at investigating productive practicums of various competencies and the competences of Machining engineering department students of Muhammadiyah 1 Bantul Vocational High School. It is a descriptive study which employed both quantitative and qualitative research designs. The practicums of various competencies consisted of seven stages led by two teachers. Those stages are opening, presenting the introductory theory, demonstrating, conducting productive practicums of various competencies, evaluating, giving feedback, and closing. Based on the data analysis, the percentage of students' response is 70%, and it is categorized as good. The average score of the students' competences is 81.67, and it is also categorized as good. Finally, the percentage of students' activity aspect is 90%, and it is also categorized as very good. © Published under licence by IOP Publishing Ltd.

关键词： Students

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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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Achievement of green campus indications based on assessment indicators on H-BAT program Universitas Negeri Semarang 9

Achievement of green campus indications based on assessment ...

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9th engineering International Conference, EIC 2020

作者： Prihanto, T. Fathoni, K. Prasetiyo, B. Study Program of Architecture Faculty of Engineering Universitas Negeri Semarang Indonesia Study Program of Electrical Engineering Faculty of Engineering Universitas Negeri Semarang Indonesia Study Program of Informatics Universitas Negeri Semarang Indonesia

Universitas Negeri Semarang (UNNES) has a spirit to become a Conservation and International Reputation University is realized through strategic missions. One of the conservation-oriented implementation programs is H-BAT (Green, Clean and Healthy) program. In its implementation, there is a problem, namely the achievement of H-BAT program has not been maximized during the last 3 years in assessment. The objectives of this research are: (1) to identify of the potential and character of environmental support in the work units;(2) to determine the achievement of the indication of a green campus based on the assessment indicators on H-BAT program. This research was carried out in four stages: (1) Data collection;(2) Spatial data processing;(3) Non Spatial data processing;(4) Analysis (ecological, technical standards);The results achieved in June 2020 are as follows: FT got 87,50%, FE got 85,87%, FMIPA got 81,52%, BUHK got79,49%, FIP got 73,91%, LP3 got 69,23%, LP2M got 63,46%, FIS got 60,33%,PPS got 57,07%, FIK got 56,52%, FH got 52,72%, FBS got 49,46%, TIK got 40,38%, BPB got 34,62%, Library got 30,13%, Archive got 17,31%. From these results, it can be seen that there is a lack of maximum achievement due to, among others, the lack of guidance and technical assistance in the management of the unit. So it is necessary to complete governance guidelines and technical assistance that are more intensive in unit governance to achieve the goals of UNNES as a green campus. © Published under licence by IOP Publishing Ltd.

关键词： Data handling

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Upcycling can waste and plastic bottle as functional material: Analysis of green process and simultaneous adsorption-photocatalytic performances

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Case Studies in Chemical and Environmental engineering 2025年 11卷

作者： Nurherdiana, Silvana Dwi Rahimah, Alya Dirja, Ramadhanu Tungga Dewi, Kun Prasasti Ramadhani, Mohamad Rizki Nugraha, Reva Edra Fitriana Wafi, Abdul Master of Environmental Science Study Program Faculty of Engineering and Science Universitas Pembangunan Nasional Veteran Jawa Timur Jl. Rungkut Madya No. 1 Gn. Anyar Kec. Gunung Anyar East Java Surabaya 60294 Indonesia Study Program of Chemical Engineering Faculty of Engineering and Science Universitas Pembangunan Nasional Veteran Jawa Timur Jl. Rungkut Madya No. 1 Gn. Anyar Kec. Gunung Anyar East Java Surabaya 60294 Indonesia Low Carbon Technology Research Centre Universitas Pembangunan Nasional Veteran Jawa Timur Jl. Rungkut Madya No.1 Gn. Anyar Kec. Gunung Anyar East Java Surabaya 60294 Indonesia Department of Physics Universitas Negeri Surabaya East Java Surabaya 60231 Indonesia Research Center for Food Technology and Processing National Research and Innovation Agency (BRIN) Gading Playen Gunungkidul Yogyakarta 55861 Indonesia

This study presents an investigation of chemical and physical characterization, green process analysis, techno-economic considerations, and carbon emissions for synthesizing metal-organic frameworks (MOFs) from plastic and can waste using microwave-assisted synthesis. The microwave-assisted synthesis proves to be more cost-effective, with a reduction in CO₂ emissions by up to 80%. The synthesized material (MIL-Mw-U) demonstrates excellent performance in methylene blue (MB) removal, achieving 98.41% removal, with 97.87% removal although the catalyst is used in the third cycle. The adsorption of methylene blue (MB) onto MIL-Mw-U achieved a maximum capacity of 295.26 mgg⁻¹ at pH 3 and decreased to 258.68 mgg⁻¹ at pH 11 due to OH⁻ competition. The Langmuir isotherm (R² = 0.9381) and pseudo-second-order kinetics (R² = 0.999) confirmed monolayer chemisorption as the dominant mechanism. This innovative approach supports circular economy principles by converting can and plastic bottle waste into functional material for dye removal, offering sustainable solutions for environmental challenges. © 2025 The Authors

关键词： Adsorption Dye removal Green chemistry Metal organic frameworks Photocatalytic SDGs 13 Climate Change

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Beyond the band edge: Unveiling high-mobility hot carriers in a two-dimensional conjugated coordination polymer

arXiv

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arXiv 2025年

作者： Fu, Shuai Huang, Xing Gao, Guoquan Petkov, Petko St. Gao, Wenpei Zhang, Jianjun Gao, Lei Zhang, Heng Liu, Min Hambsch, Mike Zhang, Wenjie Zhang, Jiaxu Li, Keming Kaiser, Ute Parkin, Stuart S.P. Mannsfeld, Stefan C.B. Zhu, Tong Wang, Hai I. Wang, Zhiyong Dong, Renhao Feng, Xinliang Bonn, Mischa Center for Advancing Electronics Dresden Faculty of Chemistry and Food Chemistry Technische Universität Dresden Dresden Germany Max Planck Institute for Polymer Research Mainz Germany Laser Micro/Nano Fabrication Laboratory School of Mechanical Engineering Beijing Institute of Technology Beijing China Faculty of Chemistry and Pharmacy University of Sofia Sofia Bulgaria State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Future Material Innovation Center Zhangjiang Institute for Advanced Study Shanghai Jiao Tong University Shanghai China Center for Advancing Electronics Dresden Faculty of Electrical and Computer Engineering TUD Dresden University of Technology Germany Germany Central Facility for Materials Science Electron Microscopy Universität Ulm Ulm Germany Nanophotonics Debye Institute for Nanomaterials Science Utrecht University Utrecht Netherlands Department of Chemistry The University of Hong Kong 999077 Hong Kong HKU-SIRI Shenzhen518048 China

Hot carriers, inheriting excess kinetic energy from high-energy photons, underpin numerous optoelectronic applications involving non-equilibrium transport processes. Current research on hot carriers has predominantly focused on inorganic materials, with little attention paid to organic-based systems due to their ultrafast energy relaxation and inefficient charge transport. Here, we overturn this paradigm by demonstrating highly mobile hot carriers in solution-processable, highly crystalline two-dimensional conjugated coordination polymer (2D c-CP) Cu3BHT (BHT = benzenehexathiol) films. Leveraging a suite of ultrafast spectroscopic and imaging techniques, we unravel the microscopic charge transport landscape in Cu3BHT films following non-equilibrium photoexcitation across temporal, spatial, and frequency domains, revealing two distinct high-mobility transport regimes. In the non-equilibrium transport regime, hot carriers achieve ultrahigh mobility of ~2,000 cm2 V–1 s–1, traversing grain boundaries up to ~300 nm within a picosecond. In the quasi-equilibrium transport regime, free carriers exhibit Drude-type band-like transport with a remarkable mobility of ~400 cm2 V–1 s–1 and an intrinsic diffusion length exceeding 1 µm. These findings establish 2D c-CPs as versatile platforms for exploring high-mobility non-equilibrium transport, unlocking new opportunities for organic-based hot carrier applications. Copyright © 2025, The Authors. All rights reserved.

关键词： Kinetic energy

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Analyzing the use of SEO and Google Analytic on the Website of Vocational High School of Information Technology Annajiyah 3

Analyzing the use of SEO and Google Analytic on the Website ...

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

作者： Supraba, L.D. Jati, H. Electrical and Informatics Engineering Education Study Program Faculty of Engineering Yogyakarta State University Indonesia

The number of Islamic boarding school teaching both Information Technology (IT) Education and Religious Education is still limited. Vocational High School of Information Technology Annajiyah located in Tambakberas, Jombang, East Java is a school having both subjects taught. The existence of Vocational High School of Information Technology Annajiyah has not been widely known by outside and inside society of Jombang Regency. Therefore, Therefore, analysis of the use of SEO is necessary to determine the potential of website visit and school promotion. Previously, Vocational High School of Information Technology Annajiyah promoted school by using brochures only. This method was considered able to introduce the school through traditional way. Analysis result of improving SEO can be seen in Google Analytic recorded a number of site visits amounted 403 in June, where 82.2% of active users are dominated by mobile phone users and fluctuation of the number of visits. This increase is affected by both the implementation of SEO and online PPDB process during the COVID pandemic. © 2021 Published under licence by IOP Publishing Ltd.

关键词： Websites

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Optimization of Extrusion Parameters for Composite Pla/Mg/Ha Filaments Using the Taguchi Method for Bone Scaffold

SSRN

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SSRN 2025年

作者： Prakoso, Akbar Teguh Basri, Hasan Adanta, Dendy Gunawan Akbar, Imam Syahrom, Ardiyansyah Arifin, Amir Department of Mechanical Engineering Faculty of Engineering Universitas Sriwijaya Indralaya South Sumatra 30662 Indonesia Doctoral Program Study of Engineering Science Faculty of Engineering Universitas Sriwijaya Palembang South Sumatra30139 Indonesia Applied Mechanics and Design Faculty of Mechanical Engineering Universiti Teknologi Malaysia Johor Bahru Skudai81310 Malaysia Universiti Teknologi Malaysia Johor Bahru Skudai81310 Malaysia

This paper attempts to optimise the single screw extrusion (SSE) process parameters for extruding polylactic acid (PLA)/magnesium (Mg)/hydroxyapatite (HA) composite filament, aiming for a final filament diameter of 1.75 mm to enhance process efficiency and output quality. In this study, the Taguchi method was employed to systematically evaluate how screw speed, nozzle diameter, material composition, and temperature affect filament diameter. The analysis demonstrated that screw speed, nozzle diameter, material composition, and temperature significantly affect the filament diameter. Under optimal conditions (94% wt PLA, 4% wt Mg, and 2% wt HA, 1.95 mm nozzle diameter, 6 rpm screw speed, and 175°C), the resulting filament diameter closely approached 1.75 mm. These findings enhance the fabrication efficiency and quality of composite filaments, with promising applications in advanced bone scaffolds. © 2025, The Authors. All rights reserved.

关键词： Scaffolds (biology)

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Sensing Performance Analysis of Mobile Robot Navigation Based on Depth Camera and Lidar

Sensing Performance Analysis of Mobile Robot Navigation Base...

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2023 International Conference on Computer science, Information Technology and engineering, ICCoSITE 2023

作者： Afrisal, Hadha Sofwan, Aghus Widayat, Widayat Isnanto, R. Rizal Diponegoro University Electrical Engineering Department Study Program of Professional Engineers Semarang Indonesia Diponegoro University Faculty of Engineering Electrical Engineering Department Semarang Indonesia Diponegoro University Study Program of Professional Engineers Faculty of Engineering Semarang Indonesia

ISBN: (纸本)9798350320954

One of the potential implementations of mobile robots in mitigating the risk of communicable diseases is for delivering items and handling materials with no-human contact. In that scenario, mobile robots require the capability of performing simultaneous multi-object detection and distance estimation for dynamic exploration in a real-world environment. Some existing research papers have contributed to the development of object detection or distance estimation, separately. However, there is still a lack of studies on simultaneous multi-object detection and distance estimation for robot navigation, especially in terms of performance analysis of the integrated techniques. One of the most challenging issues of integrating multi-object detection and distance estimation is the validation and evaluation of the type of objects with their relevant estimated distance to the robot. For that reason, this research aims to analyze the mobile robot's sensing performance in integrated simultaneous multi-object detection and distance estimation during navigation scenarios. A depth camera of Intel RealSense D455 and a rotating LIDAR of Slamtec RPLidar A1M8 are utilized in the experiments. The result of experiments shows that the object detection algorithm using Mobilenet SSD V2 can perform an accuracy of 74%, with precision, recall, and F1-Score consecutively achieving 74,54%, 74,00%, and 74,22%. The multi-object distance estimator also performs satisfactory results with a low measurement average error of 10.3 cm for indoor experiments. The integrated multiobject detector and distance estimator system can work in a real-time mode of 30 FPS, thence significantly improving the navigation performance of the mobile robot. © 2023 IEEE.

关键词： Object detection

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Removing or Avoiding the Camera Focus Light Appearing on Glossy or Bouncing Surfaces by Light Guiding and Image Warping 22

Removing or Avoiding the Camera Focus Light Appearing on Glo...

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4th International Conference on Information Technology and Computer Communications, ITCC 2022

作者： Rompis, Lianly Electrical Engineering Study Program Faculty of Engineering Universitas Katolik de la Salle Manado Indonesia

ISBN: (纸本)9781450396820

Digital picture or image becomes more and more important in people's daily life, such as for administration, documentation, active communications, and learning processes. People also demand the exchange of information through digital applications and social media. Taking picture or photo of a document, book, certificate, or thing is usually done by the help of digital scanner, but not all these stuffs can be converted into digital with a scanner. In specific condition people need real image transfer and will take photo of the real view directly using their own digital camera or smartphone camera. From author experience and observations, when taking photos of a document or book or certificate or thing normally with plastic cover or glass surface or bouncing surface, we clearly got an annoying light came from the camera focus light or flash that usually creates noise and messy image. This research was conducted based on the idea to remove or avoid getting the unwanted or disturbing light while taking photos of glossy or bouncing surfaces. A procedure to get a clear and smooth image instead of noise and broken image was derived and implemented by author using light guiding and image warping. These two methods bring accurate images that are necessary for communication needs and facilitate better future works without compromising security policies and people's rights. As the research methodology, author performed literature study, observation, analysis, and implementation. The result of this research offers a good procedure and method that can help people getting clear photos or pictures of a glossy or bouncing surface, advance research to be implemented related to camera technology, and best comprehension to improve photography techniques for future developments. © 2022 ACM.

关键词： Image enhancement

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