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All Journal Jurnal Ilmiah Teknologi dan Rekayasa Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Communications in Science and Technology Jurnal Administrasi dan Manajemen Proceeding International Conference on Mathematics and Learning Research
Harmanto, Suryadi
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Automotive Engineering Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics

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NEW APPROACH OF SIGNED BINARY NUMBERS MULTIPLICATION AND ITS IMPLEMENTATION ON FPGA Madenda, Sarifuddin; Harmanto, Suryadi
Jurnal Ilmiah Teknologi dan Rekayasa Vol 26, No 1 (2021)
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/tr.2021.v26i1.3703

Abstract

This paper proposes a new model of signed binary multiplication. This model is formulated mathematically and can handle four types of binary multipliers: signed positive numbers multiplied by signed positive numbers (SPN-by-SPN); signed positive numbers multiplied by signed negative numbers (SPN-by-SNN); signed negative numbers multiplied by signed positive numbers (SNN-by-SPN); and signed negative numbers multiplied by signed negative numbers (SNN-by-SNN). The proposed model has a low complexity algorithm, is easy to implement in software coding and integrated in a hardware FPGA (Field-Programmable Gate Array), and is more powerful compared to the modified Baugh-Wooley's model.
Pengaruh Rasio Keuangan Terhadap Return Saham Perusahaan Indeks IDX30 Periode 2017 – 2021 Herlina, Herlina; Harmanto, Suryadi; Anggrainie, Nova
JURNAL ADMINISTRASI & MANAJEMEN Vol 12, No 4 (2022): Jurnal Administrasi dan Manajemen
Publisher : Universitas Respati Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52643/jam.v12i4.2542

Abstract

Dilakukannya penelitian ini adalah dengan tujuan menganalisis ada atau tidaknya pengaruh parsial dan simultan antara CR, DER, EPS, NPM, PER, dan ROE terhadap return saham perusahaan yang terdaftar pada indeks IDX30 periode 2017-2021. 12 perusahaan memenuhi kriteria metode purposive sampling yang ditetapkan, sehingga terpilih sebagai sampel. Pada penelitian kuantitatif ini, data sekunder yang berasal dari laporan tahunan dan harga saham dianalisis mengunakan serangkaian uji statistik yang meliputi : asumsi klasik, regresi berganda, uji T, uji F, dan koefisien determinasi. Melalui uji t didapati adanya pengaruh positif antara NPM & PER dengan return saham, pengaruh negatif antara ROE dengan return saham, dan tidak adanya pengaruh antara CR, DER, EPS dengan return saham. Melalui uji F didapati adanya pengaruh antara seluruh rasio keuangan dalam penelitian ini terhadap terhadap return saham, dengan pengaruh sebesar 13,6%.Kata kunci : CR, DER, EPS, NPM, PER, ROE, return saham
A modified MixColumn-InversMixColumn in AES algorithm suitable for hardware implementation using FPGA device Prayitno, Ragiel Hadi; Latifah; Sudiro, Sunny Arief; Madenda, Sarifuddin; Harmanto, Suryadi
Communications in Science and Technology Vol 8 No 2 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.2.2023.1257

Abstract

This article described the Advanced Encryption Standard (AES) encryption and decryption process without using lookup tables in the MixColumns transformation and parallelizing the transformation process implemented in the Field Programmable Gate Array (FPGA) hardware. Parallelism of the hardware process conducted to the transformation of key schedule, addroundkey, subbyte and shiftrows (subshift) and mixcolumns in the first 5 rounds of the encryption process. The decryption process was parallelized in subshift transformations, both transformations were implemented at the same time. This research produced a modified AES encryption and decryption method and algorithm with the aim of minimizing the resources required for hardware implementation. The method in this article was applied to Xilinx ISE 14.7 software. The experimental results showed that the encryption process required 2,357 slice LUT's, 845 occupied slices and 26 IOB's, while the decryption process required 2,896 LUT's, 1,323 occupied slices and 26 IOB's resources. The encryption and decryption processes each took an average of 2.891 nanoseconds and 3.467 nanoseconds for every 128 bits of data. This approach leads us to obtain a component with minimum resources and enough computational speed.
Fine-tuning GloVe Embedding with Contextual Information for Synthetic Batik Pattern Generation Khalida, Rakhmi; Madenda, Sarifuddin; Harmanto, Suryadi; Wiryana , I Made
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 11 No. 3 (2025): September
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v11i3.30738

Abstract

Batik is an Indonesian cultural heritage that is rich in philosophical and symbolic meanings. To support preservation and innovation, this research examines the use of Generative Adversarial Networks (GAN) in generating synthetic batik patterns based on natural language description. The main challenge lies in the interpretation of semantically complex cultural texts. This research proposes a fine-tuning approach of the GloVe word insertion model with a batik domain-specific corpus. The dataset consists of 3,100 batik images of Parang and Kawung motifs, each accompanied by 10 textual descriptions. Two approaches were evaluated: GloVe generalized pre-training and GloVe enhanced. The GAN architecture combines multimodal input and up sampling techniques to generate images from text. Intrinsic evaluation results showed that the customized GloVe model improved the average cosine similarity value to 0.99. A paired t-test between the general model and the refined results yielded p < 0.01, indicating a statistically significant improvement. Extrinsic evaluation using Fréchet Inception Distance (FID) and Inception Score (IS) showed an improvement in visual quality: FID decreased from 64.5 to 48.1, and IS increased from 2.37 to 3.23. These findings demonstrate the effectiveness of semantic enhancement for improving the synthesis of culturally meaningful visuals. In addition to the technical contribution, this study demonstrates the potential of AI in the preservation of Indonesia's cultural heritage through.
A New Chaos Function Developed through the Composition of the MS Map and the Circle Map Mursidah, Ichsani; Suryadi, S; Madenda, Sarifuddin; Harmanto, Suryadi
Proceeding International Conference on Mathematics and Learning Research 2023: Proceeding International Conference on Mathematics and Learning Research
Publisher : Universitas Muhammadiyah Surakarta

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

Abstract

The rise of digital data theft makes researchers try to find better methods for digital data protection. Confidential digital data can be secured by encryption methods, one of which is the chaos function. We propose in this paper a new chaos function which is a composition of MS Map and Circle Map functions. This function has chaotic nature and is named the MS Circle Map. The sensitivity and randomness tests of the MS Circle map function are carried out using a bifurcation diagram, Lyapunov Exponent, and NIST. The analysis result of the bifurcation diagram shows that the MS Circle map has a good density at the value of r E (0,4). Besides that, the Lyapunov Exponent has a non-negative value at r E [0.4, 4], X0 = 0.9, r = 3.8, W = 0.5 λ = 2.1 which is the domain Xn E (0, 1) and parameter values r, E, and Ω, K are any real numbers. The results of the NIST randomness level test show that the MSC Map function all passed the randomness test of 16 NIST tests.
Co-Authors Anggrainie, Nova Herlina Herlina Khalida, Rakhmi LATIFAH Mursidah, Ichsani Prayitno, Ragiel Hadi Sarifuddin Madenda Sunny Arief Sudiro Suryadi, S Wiryana , I Made