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All Journal Jurnal Sistem Informasi dan Teknologi Informasi Jurnal Multidisiplin Pengabdian Masyarakat (JMPM) Jurnal Sistem Informasi dan Ilmu Komputer
Zulfikar Yusya Mubarak
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Computer Science & IT Control & Systems Engineering Education Engineering Library & Information Science Social Sciences Other

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Implementasi Strategi Promosi dengan Digital Marketing Melalui Media Sosial Instagram pada Program Studi S1 Bisnis Digital UNAIC Annisa Rahayu Pangesti; Zulfikar Yusya Mubarak; Nuni Wulansari; Atika Mahmudah; Muhammad Fahmi Zulfikar
Jurnal Sistem Informasi dan Teknologi Informasi Vol 1 No 2 (2022): Jurnal Sistem Informasi dan Teknologi Informasi
Publisher : Himpunan Penggiat Teknologi Informasi Abrar Indonesia

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Abstract

In today's society, the use of social media has become a necessity in everyday life as a communication tool that can help people to connect, share and interact, access news and information both locally and globally. This makes the users of social media platforms such as Instagram continue to increase so that it can provide opportunities for companies and product and service providers to build brand awareness, connect with customers, and reach new customers so that it can become a new strategy in marketing and promotion using digital marketing. This research has the aim of implementing a digital marketing strategy through the Instagram social media platform to provide brand awareness and strengthen digital branding so as to increase the number of new students in the Digital Business Undergraduate Study Program at Al-Irsyad University Cilacap. In researching this topic, the writer used a descriptive qualitative method. The data used are primary data and secondary data obtained through interviews, observation, and documentation as a method of collecting data. The results of the study show that digital marketing strategies through Instagram social media are effective promotional media if they are well designed and implemented, so that promotion through digital marketing is an important thing to do to increase brand awareness and strengthen branding.
Sosialisasi Strategi Pemasaran Melalui Media Sosial Pada UMKM Pedagang Sayur Cilacap Yusuf, Dede; Nuni Wulansari; Zulfikar Yusya Mubarak; Tri Kusuma Wardani; R. Bagus Bambang Sumantri
Jurnal Arba - Multidisiplin Pengabdian Masyarakat Vol. 2 No. 2 (2025): Agustus
Publisher : Jurnal Arba - Multidisiplin Pengabdian Masyarakat

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The development of communication technology and social media in Indonesia, where 96% of internet users use social media, has changed the way of marketing, including for small and medium enterprises (SMEs). Information literacy is an important skill to use information ethically and efficiently in planning and implementing empowerment programs. This community service activity aims to provide insight into marketing strategies through social media to vegetable traders in Cilacap who often face budget constraints. Social Media Marketing (SMM), which has been proven to increase sales for 74% of SMEs that implement it, was chosen as a flexible strategy to increase sales through platforms such as Facebook and Instagram. In addition to SMM strategy training, participants were also given branding designs in the form of banners and logos to increase the appeal of their products. Based on the results of the socialization, participants understand the importance of digital marketing and branding, which is expected to help local SMEs optimize their budgets for more sustainable business growth.
Analisis Perbandingan Kinerja SHA-256, SHA3-256, dan BLAKE2s untuk Integritas Transaksi Digital dalam Konteks Distributed Ledger Yuni Dwi Anggraeni; Arum Prasetyajati; Zulfikar Yusya Mubarak
Jurnal Sistem Informasi dan Ilmu Komputer Vol. 4 No. 3 (2026): Agustus: Jurnal Sistem Informasi dan Ilmu Komputer
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jusiik-widyakarya.v4i3.6736

Abstract

Cryptographic hash functions are fundamental to transaction integrity in distributed-ledger systems, but their computational performance can vary across software and hardware environments. This study compares SHA-256, SHA3-256, and BLAKE2s-256 under a controlled single-node benchmark using identical simulated digital transactions. Transactions were serialized as canonical UTF-8 JSON and evaluated in batches of 50,000, 100,000, and 250,000 records. Each condition used five warm-up runs and 30 measured paired repetitions, producing 270 measured runs. Execution time, processing rate, descriptive statistics, 95% bootstrap confidence intervals, Friedman tests, and Holm-adjusted Wilcoxon signed-rank comparisons were analyzed. SHA-256 consistently produced the lowest mean execution time: 60.30 ms, 119.98 ms, and 290.88 ms for the three batch sizes, respectively. BLAKE2s required 94.42–441.39 ms and SHA3-256 required 97.97–470.14 ms. Differences among algorithms were significant at every batch size (Friedman p < 0.001; Kendall’s W = 0.903–0.968). These results indicate that SHA-256 was the most computationally efficient option in the tested Python/Windows AMD64 environment. The findings are implementation-specific and should not be interpreted as a universal security ranking of the algorithms.
Co-Authors Annisa Rahayu Pangesti Arum Prasetyajati Atika Mahmudah Dede Yusuf, Dede Muhammad Fahmi Zulfikar Nuni Wulansari Raden Bagus Bambang Sumantri TRI KUSUMA WARDANI Yuni Dwi Anggraeni