1,721,029 research outputs found
Helmet Charger Based Solar Power: A Review of Business Prospect
Get PDFSolar power based helmet charger is a product developed by the author and his team that was funded twice by the Ministry of Research and Technology of Higher Education in 2013 and 2014 for ‘Karsa Cipta’ (creative plan) program and ‘Kewirausahaan’ (enterpreneurship) program, respectively. This product has participated in several scientific agendas such as conferences or contests from 2013 to 2015, and is processing the proposal for patent with several claims distinguishing it from other similar innovations. This paper is contained with invention profile and achievement of qualification fulfillment of a superior innovation as well as several considerations of technopreneurship based opportunities or business prospects as a follow up research and development
Development of Educational Kit for Practical Course in the Topic of Phase-Shift RC Oscillator
Full text linkThis research develops a phase-shift RC Oscillator trainer kit that can be used to give undergraduate students an understanding of one of the materials related to analog circuit practicum. The Oscillator is one of the essential subtopics to be examined thoroughly by electrical engineering students. Furthermore, the Resistor and Capacitor modules were provided separately to be connected to the trainer through jumper cables. The phase-shift RC circuit in the trainer kit used a single Op-Amp 741 while the Network model utilized an Inverting Amplifier to determine the gain which must be ≥ 29 times, therefore, Rfeedback ≥ 29 Rgain (Rfeedback = 30 kΩ and Rgain = 1 kΩ). Two tasks in this learning media were completed by students, namely measuring the output frequency and observing the phase shift. The output signal on this trainer kit was observed using only an Oscilloscope and a frequency counter. The phase inverter of the phase-shift RC Oscillator adjusts the output signal by 180o and sends feedback to the input, therefore, there is positive feedback. Meanwhile, the trainer kit had an output frequency specification of ~649 Hz (C = 100 nF, R = 1 kΩ) and it shifts the phase by 60o on each RC network. Using 2 and 3 R-C networks, the phase shifts were 120o and 180o, respectively. The trainer kit was packaged in a box made of acrylic with dimensions l x w x h = 20 cm x 28 cm x 5 mm. Through a questionnaire consisting of 13 criteria, this trainer kit was declared valid, namely r count > 0.2960 (5%) and reliable (Cronbach's alpha > 0.60, which was 0.732) to be used as a learning media based on user responses, namely students (N = 35). In the context of technical education, this trainer kit also supports the efficient implementation of practicum without compromising the learning objectives due to the ease of operation (plug & play through jumper cables) compared to fully assembling the circuit using a project board
Analyzing the Trends and Global Growth of Energy Harvesting for Implantable Medical Devices (IMDs) Research—A Bibliometric Approach
Full text linkAbstract
Implantable medical devices (IMDs) play a crucial role in improving individuals’ well-being and ensuring their safety by providing real-time health data monitoring for recovery. The use of energy harvesting (EH) technology has become increasingly popular among researchers because it offers the potential to extend the battery life of IMDs and reduce their weight. This study successfully examined the expansion of EH in the field of IMDs, the distribution of publications across different countries, and the identification of the most influential authors for potential research collaborations. A bibliometric analysis was conducted to evaluate two metrics: performance and science mapping. Data was collected from the Scopus database from the initial publications until October 2023, encompassing 250 articles published in Englishlanguage journals. The titles, keywords, and abstracts of these publications were analyzed and interpreted using VOS Viewer (version 1.6.19). Furthermore, network analysis using VOS Viewer enabled the identification of key research clusters. The findings reveal a continuous increase in EH for research on infectious and parasitic diseases over the 15-year period from 2008 to 2023. The United States and the University of Bern are recognized as the leading contributors to this field, based on their country and institutional contributions, respectively. The author with the most published papers and citations hails from China. Additionally, this study identifies several opportunities for collaboration with countries, institutions, authors, and research hotspots in EH for IMDs that benefit the reader.Abstract
Implantable medical devices (IMDs) play a crucial role in improving individuals’ well-being and ensuring their safety by providing real-time health data monitoring for recovery. The use of energy harvesting (EH) technology has become increasingly popular among researchers because it offers the potential to extend the battery life of IMDs and reduce their weight. This study successfully examined the expansion of EH in the field of IMDs, the distribution of publications across different countries, and the identification of the most influential authors for potential research collaborations. A bibliometric analysis was conducted to evaluate two metrics: performance and science mapping. Data was collected from the Scopus database from the initial publications until October 2023, encompassing 250 articles published in Englishlanguage journals. The titles, keywords, and abstracts of these publications were analyzed and interpreted using VOS Viewer (version 1.6.19). Furthermore, network analysis using VOS Viewer enabled the identification of key research clusters. The findings reveal a continuous increase in EH for research on infectious and parasitic diseases over the 15-year period from 2008 to 2023. The United States and the University of Bern are recognized as the leading contributors to this field, based on their country and institutional contributions, respectively. The author with the most published papers and citations hails from China. Additionally, this study identifies several opportunities for collaboration with countries, institutions, authors, and research hotspots in EH for IMDs that benefit the reader
PELAKSANAAN KKN TEMATIK DI KAMPUNG BOJONGSALAM DAN KOBER AL-IKHLAS
No full textVirus Corona atau yang sering disebut dengan Coronavirus Disease-2019 (Covid-19) adalah virus yang pertama kali di identifikasi di Wuhan Tiongkong pada akhir tahun 2019. Kemudian, teridentifikasi sampainya ke Indonesia adalah pada tahun 2020 tepatnya pada bulan Maret. Pada akhirnya World Health Organization (WHO) mengumumkan bahwa Covid-19 dinyatakan sebagai pandemi dengan itu maka pemerintah mengeluarkan kebijakan-kebijakan guna mencegah dan menanggulangi penyebaran dampak Covid-19. Untuk membantu kebijakan yang dikeluarkan oleh pemerintah maka Universitas Pendidikan Indonesia Kampus daerah di Purwakarta mengadakan Kegiatan Kuliah Kerja Nyata atau lebih sering dikenal dengan KKN dengan mengangkat tema KKN-Tematik Pencegahan dan Penanggulangan Dampak Covid-19 atau KKNT PPD Covid-19. Pada kali ini kegiatan diadakan secara individu dan pendampingan oleh dosen pembimbing dilakukan secara daring. KKNT ini dilaksanakan di RT 02 RW 03 Kampung Bojongsalam, Desa Celak, Kecamatan Gununghalu, Kabupaten Bandung Barat. Kegiatan KKNT PPD Covid-19 ini bertujuan untuk mengedukasi masyarakat dan juga anak usia dini yang ada di daerah tersebut. Program kegiatan yang dilaksanakan adalah dengan menggunakan metode pemberian edukasi terkait pencegahan dan penanggulangan dampak Covid-19 secara online melalui media sosial. Program kegiatan yang dilaksanakan dalam KKNT ini antara lain pendampingan belajar; mengenal media pembelajaran Games Learning pada salah satu Kober ; mengenal 3 M ; Pendidikan mengenai mencuci tangan ; berbagai edukasi pencegahan dan penanggulangan baik melalui berbagia sosial media dan poster. Hasil program menunjukan bahwa program ini berdampak positif baik bagi masyarakat maupun dalam segi dunia Pendidikan anak usia dini. Setelah diadakannya kegiatan KKNT ini masyarakat menjadi sadar dan paham akan menjaga dan mentaati protokol Kesehatan pada masa pandemi ini. Program pendampingan belajar selama pandemi merupakan program yang sangat berguna bagi anak-anak karena dengan adanya program ini orang tua lebih terbantu dan anak-anak menjadi lebih semangat untuk belajar.Kata kunci: Covid-19; KKNT, Kebijakan Pemerintah
Noise and Bandwidth in Operational Amplifiers for Conventional TIAs used in Visible Light Communication
Full text linkTrans-impedance amplifiers play an essential role in the physical layer of visible light communication systems. They are applied in the first stage of a visible light communication receiver. This short paper is a follow-up from a previous study about the bandwidth and noise of Op-Amp based trans-impedance amplifier as used in visible light communication systems through two approaches: calculation and simulation. The results of both calculation and simulation are then compared through several scenarios. In this study, the Orozco approach is used as a fundamental reference in calculating the trans-impedance amplifier’s bandwidth and noise. Whereas for simulation, we used TINATM-SPICE®
Rancang Bangun Layer Fisik Visible Light Communication Pada Sistem Transmisi Audio
Full text linkKini, fungsi LED tidak hanya sebagai penerangan saja, melainkan dapat dimanfaatkan sebagai media komunikasi. Teknologi ini lazim disebut sebagai komunikasi cahaya tampak atau VLC, yang mana telah mulai diaplikasikan pada area-area yang rentan gelombang elektromagnetik seperti rumah sakit, kabin pesawat, bandara, markas militer dan lain sebagainya. Media yang umumnya dijadikan objek transmisi data adalah berupa gambar, video, audio (musik), teks, bahkan paket data untuk keperluan browsing internet. Penelitian ini mengimplementasikan sistem VLC yang berfokus pada layer fisik, yakni pada bagian Analog Front-End (AFE). Sistem yang dirancang terdiri atas modul AFE transmitter sebagai modulator dan AFE receiver sebagai demodulator. Rancangan AFE transmitter mengadopsi prinsip dari modul Bias-T, dengan fungsi yang sama namun memiliki keunggulan pada sisi low-cost. Sedangkan pada bagian AFE receiver, terdapat modul DC-offset remover yang berfungsi untuk mereduksi sinyal DC dari ambient light. Hasil demonstrasi menunjukkan bahwa sistem secara fungsional dapat digunakan untuk transmisi sinyal audio via cahaya tampak dan secara langsung ditampilkan ke loudspeaker yang mana pengamatan dilakukan secara langsung dengan membandingkan amplitude sinyal input ke LED driver dengan sinyal output dari stage terakhir dari AFE receiver. Berdasarkan pengujian dapat ditunjukkan bahwa bandwidth optimum dari AFE transceiver adalah dalam rentang 50 kHz sampai 450 kHz (referensi redaman pada frekuensi cut-off = -3 dB) dan jarak maksimum transmisi data adalah 40 cm dengan sudut elevasi penerimaan sebesar 0 derajatCurrently, LED functions not only as illumination purpose but also can be used as a communication device. Commonly, this technology is called as "visible light communication (VLC)", which has begun to be applied in areas susceptible to electromagnetic waves, such as hospitals, aircraft cabins, airports, military headquarters and etc. Generally, the media, which is used as object of the data transmission, e.g. digital images, video, audio (music only), texts, and even data packets for internet browsing purposes. This research implements a VLC system that focuses on the physical layer, especially in Analog Front-End (AFE) part. The designed system consists of an AFE transmitter module as a modulator and an AFE receiver as a demodulator. The designing AFE transmitter adopts the Bias-T module principle, it has same the functionality but extremely lower in the cost factor. While in the AFE receiver part, the DC-offset remover module is implemented, it has a function to reduce the DC signal that generated from ambient light. The results of demonstration show that the system, functionally, can be used for transmitting audio signals via visible light and the received data can be displayed to the loudspeaker directly. In this work, the data observation is done by comparing the amplitude of input signal connected to the driver LED against the output signal from the last stage of the AFE receiver. From the test results, it can be shown that the optimum bandwidth of the AFE transceiver is about 50 kHz to 450 kHz (with attenuation at fc = -3 dB as a reference) and the maximum distance for data transmission is 40 cm and angle of reception is 0
Pembuatan Trainer Board Astable Multivibrator (AM) sebagai Media Pembelajaran
Full text linkTrainer board is a modelling device approach which has related function or same with real pheneonom, it was designed for upgrading the cognitive and the psychomotoric ability of students in a practical courses understanding and applicating concepts. This research goals is to make a trainer board of Astable Multivibrator oscillator, we hope that this learning tools can help them in facilitate to learn Astable Multivibrator characteristics as well as laboratories insfrastructure need. The method in design and implement this trainer board is prototyping and assembling with several approach steps, i.e. identification; simulation; experiment, design process; fabrication; and finally is testing. The results show that the trainer board which designed is appropriate with the theorem
Proposed An Intelligent System for Electricity Theft Detector at Smart City Scenarios
Get PDFThis is a conceptual proposal which is aimed at describing an intelligent security system to early detect cases of electricity theft which is claimed effective to cope with ICT based cases of electrecity theft. The method employed in the detector is computation system, which is the computation of phase differences (Φ), current voltage in real time and losses detection of electrical power grid by 220V. The losses calculation employs Kirchoff’s law I which is Kirchoff’s current law. The current sensors are put on the output distribution transformer and on customer’s APP connection. The working principles are (1) reading output current and phase differences at the load point (of the customer’s) in the distribution transformer using the current sensor, (2) comparing the output current (Io) with the sum of certain variables on consumers to be discussed in this paper. (3) Knowing the data of electric current usage by recording data of losses in real time and by sending them to teh control center monitoring in in real time
Analyzing Emerging Trends in Wireless Implantable Medical Devices (IMDs): A Bibliometric Study
Full text linkAbstract
In the present era of advanced medical technology, there has been a significant increase in the utilization of wireless-based implantable medical devices (IMDs) in various biomedical applications, including health diagnosis, monitoring, recording, treatment, and other clinical concerns. It is essential to closely examine the research trends in wireless IMD topics to understand their growth trajectory. This can be achieved through the utilization of bibliometric reviews. While there are numerous experimental studies and survey papers on the topic, there is a dearth of review papers that utilize a bibliometric approach. Therefore, this study aims to conduct a bibliometric analysis to identify emerging research trends in wireless IMDs for biomedical applications for the first time. An analysis was conducted on 1,650 articles retrieved from the Scopus database from its inception until September 2023. The study used tools such as VOS Viewer to measure performance and science map parameters, and Tableau Cloud to visually enhance the analysis process. This research endeavor allowed us to analyze historical trends, influential papers, top journals, institutions, countries, and authors within this field. The top three influential journals in this field are IEEE Transactions on Biomedical Circuits and Systems, IEEE Transactions on Antenna and Propagation, and IEEE access. The National University of Singapore is the most productive institution in terms of overall publications. The United States, China, and India make significant contributions to overall publications. Finally, we also examined the most significant keywords and current research areas within this field.Abstract
In the present era of advanced medical technology, there has been a significant increase in the utilization of wireless-based implantable medical devices (IMDs) in various biomedical applications, including health diagnosis, monitoring, recording, treatment, and other clinical concerns. It is essential to closely examine the research trends in wireless IMD topics to understand their growth trajectory. This can be achieved through the utilization of bibliometric reviews. While there are numerous experimental studies and survey papers on the topic, there is a dearth of review papers that utilize a bibliometric approach. Therefore, this study aims to conduct a bibliometric analysis to identify emerging research trends in wireless IMDs for biomedical applications for the first time. An analysis was conducted on 1,650 articles retrieved from the Scopus database from its inception until September 2023. The study used tools such as VOS Viewer to measure performance and science map parameters, and Tableau Cloud to visually enhance the analysis process. This research endeavor allowed us to analyze historical trends, influential papers, top journals, institutions, countries, and authors within this field. The top three influential journals in this field are IEEE Transactions on Biomedical Circuits and Systems, IEEE Transactions on Antenna and Propagation, and IEEE access. The National University of Singapore is the most productive institution in terms of overall publications. The United States, China, and India make significant contributions to overall publications. Finally, we also examined the most significant keywords and current research areas within this field
AUDIO VIDEO-BASED LEARNING MEDIA ON PLANT THEMES FLASHCARD FOR PAUD NURUL HUDA’S STUDENTS DURING COVID-19 PANDEMIC
No full textAbstrak: Selama masa belajar di rumah, PAUD Nurul Huda, Kabupaten Cirebon melaksanakan proses pembelajaran yang monoton dimana siswa hanya diberikan tugas berupa mengisi lembar kerja selama satu minggu tanpa memberikan penjelasan materi pembelajaran kepada siswa. Media pembelajaran diperlukan untuk anak usia dini agar materi lebih konkret. Oleh sebab itu pelaksana berinisiatif untuk memberikan penguatan pembelajaran daring untuk mendesain, membuat, dan menerapkan media pembelajaran kepada siswa di sekolah sasaran, yaitu khusus kepada kelompok A yang berjumlah 26 siswa, dilakukan pada tanggal 27 November 2020. Flashcard berbasis audio visual dipilih sebagai media pembelajaran. Tema pembelajaran dalam flashcard dipilih buah-buahan sesuai dengan permintaan guru, dalam hal ini secara khusus tentang tanaman pisang. Media dibuat menggunakan bantuan web tool gratis, yaitu SuperMii, Canva, dan Filmora. Hasil menunjukkan media flashcard berbasis audio visual dapat menjadikan siswa mudah dalam mengenal bagian-bagian tanaman pisang dan menambah kosa kata baru. Selain itu, pembelajaran daring di PAUD Nurul Huda yang awalnya monoton dapat lebih bervariasi dengan adanya penggunaan media pembelajaran flashcard ini.Abstract: During the study period at home, PAUD Nurul Huda Cirebon carried out a tedious learning process, where students were only given assignments without explaining the learning material to students, i.e., filling out worksheets for one week. Learning media is needed for early childhood so that the material is more concrete. Therefore, we took the initiative to reinforce online learning to design, create, and apply learning media to students in target schools, specifically for group A, which consisted of 26 students, carried out on November 27, 2020. Audio visual-based flashcards were chosen as learning media. The theme of learning in the flashcard was selected fruits according to the teacher's request, specifically about banana plants. Media created using free web tools, namely SuperMii, Canva, and Filmora. The results show that audio visual-based flashcard media can make it easy for students to recognize parts of the banana plant and add new vocabulary. In addition, online learning at PAUD Nurul Huda, which was initially tedious can be more varied using this flashcard learning media
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