Articles
Pemanfaatan Sistem Distribusi dalam Berbagi Paket Pulsa untuk Short Message Service (SMS)
Sasmitoh Rahmad Riady;
Tjong Wan Sen
Jurnal Sains Indonesia Vol 1 No 2 (2020): Volume 1, Nomor 2, 2020 (Juli)
Publisher : PUSAT SAINS INDONESIA
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DOI: 10.59897/jsi.v1i2.9
Penelitian ini membahas mengenai Short Message Service (SMS) yang telah menjadi fitur default yang terdapat pada ponsel pintar atau ponsel tradisional dan salah satu fitur yang mulai dieksploitasi sepenuhnya oleh pengguna ponsel dalam beberapa tahun terakhir. Dalam konsep Short Message Service kali ini berbeda seperti biasanya dimana proses pengiriman pesan dari aplikasi seluler Client ke aplikasi seluler Transceiver dan kemudian diteruskanke ponsel target, dalam mengirim pesan ini dilakukan secara berurutan. untuk memanfaatkan paket SMS di dalam aplikasi Transceiver yang akan digunakan oleh aplikasi Client dalam mengirim sebuah pesan. Konsep SMS menggunakan konsep Device-to-Device untuk komunikasi antara ponsel ke ponsel, kemudian untuk komunikasi antara ponsel menggunakan TCP / IP Socket sebagai jalur komunikasi dalam mengirim SMS lalu memanfaatkan paket pulsa yang terdapat dalam aplikasi Transceiver dalam meneruskan pesan SMS dari ponsel Client tersebut ke ponsel Target. Ini adalah sebuah teknik Sistem Terdistribusi untuk berbagi sumber daya paket pulsa SMS dalam pengiriman pesan.
Pelatihan Pembuatan Media Pembelajaran untuk Guru-Guru SMA di Daerah Cikarang
Rosalina Rosalina;
Genta Sahuri;
Tjong Wansen;
Abdul Ghofir
ACADEMICS IN ACTION Journal of Community Empowerment Vol 2, No 1 (2020)
Publisher : President University
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DOI: 10.33021/aia.v2i1.995
Dalam era teknologi informasi saat ini, guru merupakan tenaga pendidik profesional yang perannya sebagai pemateri sudah bisa digantikan oleh teknologi itu sendiri. Menyikapi kondisi tersebut, para guru dituntut untuk bisa berfungsi sebagai fasilitator yang mampu mengembangkan kreativitas dan dinamika dalam menggali potensi sumber dan media pembelajaran sehingga diharapkan perannya sebagai penyampai tetap diperlukan yang pada akhirnya bisa tetap menjaga kualitas belajar mengajarnya. Untuk itu, guru dituntut untuk bisa menjadi fasilitator yang membekali dirinya dengan wawasan dan keterampilan dalam pengembangan dan pembuatan media pembelajaran yang mutakhir dan menyesuaikan situasi dan perkembangan zaman. Dari diskusi dan interaksi yang dilakukan terlihat bahwa para guru di SMA Cikarang pada umumnya masih mengalami kesulitan dalam beradaptasi dengan metode pembelajaran yang melibatkan media teknologi informasi. Salah satu penyebabnya adalah karena masih kurangnya sarana dan prasarana yang dapat menunjang keaktifan dan semangat murid dalam belajar, serta para guru yang masih belum bisa dan terbiasa dalam membuat media pembelajaran yang sesuai dengan lingkungan dan zaman siswa. Oleh karena itu tim pelaksana memberi Pelatihan Pembuatan Media Pembelajaran kepada Guru-guru SMA di Kabupaten Bekasi dengan harapan dapat meningkatkan efektivitas dan kualitas proses pembelajaran di SMA pada akhirnya akan menunjang tercapainya tujuan pendidikan di sekolah sasaran.
Aplikasi Mobile untuk Usaha Jasa Pengantaran Barang di Dusun Cibeber, Kawasan Industri Jababeka, Bekasi
Tjong Wan Sen
ACADEMICS IN ACTION Journal of Community Empowerment Vol 1, No 1 (2019)
Publisher : President University
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DOI: 10.33021/aia.v1i1.741
This Community Services Activity is meant to provide alternative income sources for citizens in Dusun Cibeber which is located in the center of Jababeka Industrial Estate, Cikarang, Bekasi. In this activity advancement of computer and information technology, global positioning system, and telecommunication networks are used to produce a mobile application for delivery services that is easy to use, low cost, and could be operated by common person. The application together with its supporting components has already successfully developed, implemented, and simulated. Next phase would be to measure its performance widely in the real environment.
Robust Automatic Speech Recognition Features using Complex Wavelet Packet Transform Coefficients
Tjong Wan Sen;
Bambang Riyanto Trilaksono;
Arry Akhmad Arman;
Rila Mandala
Journal of ICT Research and Applications Vol. 3 No. 2 (2009)
Publisher : LPPM ITB
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DOI: 10.5614/itbj.ict.2009.3.2.4
To improve the performance of phoneme based Automatic Speech Recognition (ASR) in noisy environment; we developed a new technique that could add robustness to clean phonemes features. These robust features are obtained from Complex Wavelet Packet Transform (CWPT) coefficients. Since the CWPT coefficients represent all different frequency bands of the input signal, decomposing the input signal into complete CWPT tree would also cover all frequencies involved in recognition process. For time overlapping signals with different frequency contents, e. g. phoneme signal with noises, its CWPT coefficients are the combination of CWPT coefficients of phoneme signal and CWPT coefficients of noises. The CWPT coefficients of phonemes signal would be changed according to frequency components contained in noises. Since the numbers of phonemes in every language are relatively small (limited) and already well known, one could easily derive principal component vectors from clean training dataset using Principal Component Analysis (PCA). These principal component vectors could be used then to add robustness and minimize noises effects in testing phase. Simulation results, using Alpha Numeric 4 (AN4) from Carnegie Mellon University and NOISEX-92 examples from Rice University, showed that this new technique could be used as features extractor that improves the robustness of phoneme based ASR systems in various adverse noisy conditions and still preserves the performance in clean environments.
Real-Time Detection of Face Masked & Face Shield Using YOLO Algorithm with Pre-Trained Model and Darknet
Muhamad Muhaimin;
Wan Sen Tjong
Indonesian Journal of Artificial Intelligence and Data Mining Vol 4, No 2 (2021): September 2021
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau
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DOI: 10.24014/ijaidm.v4i2.14235
There are new regulations requiring the use of masks or face shields to prevent the transmission of Covid-19. Using deep learning, a model can be made to detect faces that use masks and face shields by training the model using the previous pre-trained model and using a custom dataset. The purpose of this study is to create a deep learning model that can detect faces with and without masks and as well as face shields for the prevention of covid-19 transmission using YOLO (You Only Look Once) with pre-trained models and custom datasets in real-time. In this study, using pre-trained models from YOLOv3, YOLOv3-Tiny, YOLOv4, YOLOv4-Tiny, and YOLOv4-Tiny-3l with Darknet Framework and compare between average pooling and max pooling in the convolutional neural network YOLO to detect face masks and face shields as a real-time. From experiment the highest mAP was obtained from YOLOv4 using average pooling with a value is 97.64% although the difference is not too much with YOLOv4 using max pooling with value 97.57% and the lowest was YOLOv3-Tiny using max pooling, which was 94.09%, and for the highest FPS was obtained by YOLOv4-Tiny with Fps values is 171 and mAP 96.75%. And for real-time detection of face masks and face shields, the best model used in testing using webcam 1080p is from YOLOv4-Tiny, because the FPS is quite good and the mAP is quite high.
Optimization of the Naïve Bayes Classifier (NBC) Algorithm Using the Sparrow Search (SSA) Algorithm to Predict the Distribution of Goods Receipts
Rachma Oktari;
Tjong Wan Sen
Indonesian Journal of Artificial Intelligence and Data Mining Vol 4, No 2 (2021): September 2021
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau
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DOI: 10.24014/ijaidm.v4i2.15339
Distribution must be able to meet all needs based on sales orders from consumers, be responsible for the delivery order process running optimally, and ensure the good receipt process is in accordance with consumer sales order requests. PT. Diamond Cold Storage currently uses Enterprise Resource Planning (ERP) to record all reports from production to sales. But in reality there are still some obstacles in the distribution section. In the good receipt process, several items were found that did not match the sales order, such as: the item did not match the order request or the item did not match the order request. The process of mismatching the good receipt with the sales order will be met with the completion of the good receipt process or the bad thing is that there is a cancellation, so this causes a loss for the company. This study uses data mining techniques with the Naïve Bayes Classifier algorithm to predict the distribution of goods receipts based on distribution data, and uses the Sparrow Search Algorithm (SSA) algorithm to optimize the Nave Bayes Classifier by selecting features to improve accuracy. In this study, the results obtained that the SSA algorithm can improve the performance of NBC from 95.05% to 97.95%.
Penggunaan Stacking Classifier Untuk Prediksi Curah Hujan
Diky Djafar Sidik;
Tjong Wan Sen
IT for Society Vol 4, No 1 (2019)
Publisher : President University
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DOI: 10.33021/itfs.v4i1.1180
Curah hujan sebagai bentuk informasi dari data meteorologis, penting dalam segala kegiatan manusia yang berhubungan dengan alam, oleh karena itu prediksi atas curah hujan dengan hasil yang akurat merupakan hal yang sangat penting. Salah satu metode yang digunakan untuk prediksi/klasifikasi curah hujan adalah data mining dengan berbagai algoritma dan parameter data yang berbeda. Pada penelitian ini digunakan penggabungan metode klasifikasi dengan Teknik Ensemble Stacking/Stacked Generalization yang menggunakan Naïve Bayes dan C4.5 sebagai base learner dan KNN sebagai meta learner untuk klasifikasi curah hujan. Dataset yang dipergunakan adalah data klimatologi harian yang diambil dari website resmi BMKG (Badan Meteorologi, Klimatologi, Dan Geofisika) untuk stasiun UPT Bandung, Bogor, Citeko dan Jatiwangi dari periode 01 Januari 2000 sampai dengan 31 Desember 2018. Dengan menggunakan tiga skenario pengujian dan validasi menggunakan 10 fold cross validation diperoleh bahwa metode stacking dapat meningkatkan akurasi dari base classifier.
Frekuensi Dominan Dalam Vokal Bahasa Indonesia
Tjong Wan Sen
IT for Society Vol 1, No 2 (2016)
Publisher : President University
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DOI: 10.33021/itfs.v1i2.302
Pengenalan ucapan otomatis sudah dikembangkan selama lebih dari empat puluh tahun dan masih perlu untuk terus dikembangkan agar dapat memiliki kemampuan yang menyerupai manusia. Teknologi ini sangat bermanfaat tetapi hingga saat ini masih belum bisa dipakai secara umum dengan mudah dalam aktivitas manusia sehari-hari. Ketersediaan pilihan bahasa pun masih menjadi kendala, diperlukan waktu pelatihan yang cukup panjang untuk masing-masing bahasa yang diinginkan. Salah satu bahasa yang banyak digunakan di dunia adalah Bahasa Indonesia. Meskipun demikian belum banyak sistem Pengenalan Ucapan Otomatis yang menggunakan Bahasa Indonesia. Beberapa sistem yang dikembangkan oleh perusahaan besar telah memiliki pilihan Bahasa Indonesia, tetapi basis data yang digunakan tidak dapat diakses oleh masyarakat umum. Oleh karena itu perlu dikembangkan basis data suara ucapan dalam Bahasa Indonesia. Dalam artikel ini dilaporkan pengembangan data suara ucapan vokal Bahasa Indonesia. Pengumpulan data dilakukan dengan cara merekam suara vokal dari berbagai sumber. Sumber ucapan dibedakan secara etnisitas, jenis kelamin dan usia. Dari masing-masing kelompok diidentifikasi kelompok frekuensi yang dominan. Himpunan frekuensi dominan antar kelompok tersebut kemudian dibandingkan satu dengan lainnya untuk mengetahui persamaan dan perbedaannya.
Implementation of Bayes Network in Giving First Aid Solution
Darien Daud Earlliawand;
Tjong Wan Sen
IT for Society Vol 1, No 1 (2016)
Publisher : President University
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DOI: 10.33021/itfs.v1i1.19
In a critical situation, such as traffic accident, sometimes a person is required to do a first aid in order to save someone’s life, until the emergency unit arrives. If a person does not know how to do a first aid, he or she will need a guide, such as an application in a device that people always bring, a smartphone. Technology is one of the science fields that grow very fast. It is not only about the hardware but also the software, such as artificial intelligence. Artificial intelligence is one of the fields that are commonly used nowadays, either for gaming purpose, education and research purpose, or other purposes. This application, ES First Aid, is an Android application to help the user to decide what to do in emergency situation. It will ask a few questions related to the condition of the casualty then it will tell the user clearly about the actions needed to be taken.
Pengembangan Mesin 3D Printing Sebagai Alternatif Pembangunan Rumah Yang Lebih Efisien: Pengembangan Mesin 3D Printing Sebagai Alternatif Pembangunan Rumah Yang Lebih Efisien
riyanto adji;
Nanang Ali Sutisna;
Wan Sen Tjong
Media Teknik Sipil Vol. 19 No. 2 (2021): Agustus 2021
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang
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Technological advances will always experience very fast changes, especially in 3D printing technology which is currently acceptable in various industrial worlds, the presence of 3D printing machines really helps humans in visualizing an idea and the results of their thoughts into a very profitable replica. The world of construction has not been fully touched by 3D printing technology, and only a few countries have made it, one of which is the People's Republic of China, which in 2014 succeeded in building a house using a 3D printing machine, with a house size of 40 m2 and 5 floors high. The advantages of building a house with a 3D printing machine include saving labor, saving time in house construction because the construction of a house is determined by the type of concrete and the machine as the main tool, besides that the construction waste generated can be minimized because there is no need to use scaffolding or other tools. the material that is installed is definitely installed neatly because it is arranged in layers. The use of this 3D printing machine will be very useful in Indonesia because it takes into account the high level of population, and the need for housing will be directly proportional to population growth.