Garuda - Garba Rujukan Digital

Penyembunyian Pesan Rahasia Pada Citra Digital Dengan Teknik Steganograpi Menggunakan Metode Least Significant Bit Ardiansyah, Achmad; Kurniasih, Mepa
Jurnal Teknologi Informasi RESPATI Vol 13, No 3 (2018)
Publisher : Universitas Respati Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35842/jtir.v13i3.258

INTISARIÂ Pesan merupakan hasil dari pengolahan data menjadi bentuk yang lebih berguna bagi yang menerimanya yang menggambarkan suatu fakta yang digunakan sebagai alat bantu untuk pengambilan suatu keputusan. Sangat pentingnya isi pesan yang menyebabkan pesan hanya boleh diakses oleh orang-orang tertentu. Pesan yang merupakan aset bernilai seharusnya dilindungi agar aman. Steganografi adalah seni dan ilmu menulis pesan tersembunyi atau menyembunyikan pesan dengan suatu cara sehingga selain si pengirim dan si penerima, tidak ada seorangpun yang mengetahui atau menyadari bahwa ada suatu pesan rahasia. Pesan yang dapat disembunyikan berupa teks, gambar, suara, dan video.Melindungi pesan yang dirahasiakan dari orang yang tidak berhak salah satunya adalah teknik steganografi yang dapat menyembunyikan data rahasia. Teknik steganografi menggunakan metode Least Significant Bit (LSB) untuk memodifikasi bit-bit yang termasuk bit LSB pada setiap byte warna pada sebuah pixel citra digital. Bit-bit LSB ini akan dimodifikasi dengan menggantikan setiap LSB yang ada dengan bit-bit informasi lain yang ingin disembunyikan. Dengan adanya citra digital kita bisa memanfaatkan utuk menyisipkan pesan pada citra digital tersebut. Hasil penelitian menunjukkan bahwa semakin besar ukuran pixel citra dan jumlah karakter, maka akan semakin lama proses penyisipan dan ekstraksinya. Dengan stego-image yang diperoleh secara citra digital memiliki tampilan hampir sama sehingga tidak terlihat oleh sistem penglihatan manusia.Kata Kunc â€“ Citra Digital, Least Significant Bit (LSB),Â Steganografi , PesanÂ ABSTRACTMessage is the result of processing data into a form that is more useful for those who receive it which describes a fact that is used as a tool for making a decision. The importance of the contents of messages causes messages to only be accessed by certain people. Messages that are valuable assets should be protected to be safe. Steganography is the art and science of writing hidden messages or hiding messages in a way so that in addition to the sender and the recipient, no one knows or realizes that there is a secret message. Messages that can be hidden are in the form of text, images, sounds, and videos.Protecting confidential messages from unauthorized people is one of the Steganography Techniques that can hide confidential data. The steganography technique uses the LSB (Least Significant Bit) method to modify the bits including the LSB bit on each color byte in a digital image pixel. These LSB bits will be modified by replacing each existing LSB with other bits of information that you want to hide. With the presence of digital images we can use to insert messages in the digital image. The results of the study show that the larger the pixel size of the image and the number of characters, the longer the insertion process and its extraction will be. With stego-image obtained by digital imagery it has almost the same appearance so it is not visible to the human visual system.Keywords â€” Digital Image, Least Significant Bit (LSB), Steganography, Message

Policy Implementation in Management of Anchor Harbors Kepulauan Riau Province Ardiansyah, Achmad; Samin, Rumzi; Adhayanto, Oksep
Metta : Jurnal Ilmu Multidisiplin Vol. 4 No. 2 (2024)
Publisher : Jayapangus Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37329/metta.v4i2.3201

Research discusses the implementation of anchor anchor management policies in the Kepulauan Riau Province which involves various actors with different interests. Research objectives are to implement anchor anchor management policies in the Kepulauan Riau Province. Research method used is a post-positivism approach by analyzing the types of benefits obtained, the scale of change desired, the decision-making framework, institutional and regime characteristics, as well as policy implementation and responsiveness. Results and discussion show that implementing this policy has significant economic, social, environmental and security benefits but still requires improvements to infrastructure and supporting facilities. There is also a need for good cooperation and coordination, increasing institutional capacity, increasing the capabilities of relevant officials, as well as developing technology and innovation to support more effective policy implementation. In conclusion, the anchor anchor management policy in the Kepulauan Riau Province must be improved so that it can have a positive impact on the community and the surrounding environment and improve the welfare of the local community. Apart from that, this research also highlights the importance of involving various actors in decision making regarding anchor anchor management policies. In this way, the resulting policies can be more effective and efficient, and can meet the needs and interests of all parties involved. Implication of this research is the need for synergy and collaboration between various actors regarding anchor anchor management policies. Apart from that, it is also important to pay attention to the decision-making framework, characteristics of institutions and regimes, as well as policy implementation.

Penyimpanan Audit Log Dengan Menggunakan Apache Kafka Ardiansyah, Achmad
Jurasik (Jurnal Riset Sistem Informasi dan Teknik Informatika) Vol 9, No 2 (2024): Edisi Agustus
Publisher : STIKOM Tunas Bangsa Pematangsiantar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30645/jurasik.v9i2.835

Recently, there are many computer programs that being use for many purposes, so computer program will be entering complex programing era. If a system or a program become complex, it will need a new method to audit logs from the systems for an assurance if something is happening. For Example Error or Output that should not be happening but found after it release. This experiment will be using Apache kafka as a tool to make sure the system is making an audit logs without interrupting the main process. After some experiment using some of test case scenario, the result is audit logs using kafka is simple to use and reliable, also this method will not interrupt the main process of the program

Implementasi Data Mining dengan Metode Apriori Untuk Analisis Pola Penjualan Barang Fashion Ardiansyah, Achmad; Midtaqulhuda, M
J-SAKTI (Jurnal Sains Komputer dan Informatika) Vol 6, No 2 (2022): EDISI SEPTEMBER
Publisher : STIKOM Tunas Bangsa Pematangsiantar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30645/j-sakti.v6i2.534

Technological developments are quite felt for all lines of life that do not exist in the trading business sector. The proliferation of online stores is one of the impacts of technological developments that change the way consumers think in transactions. Although many online stores appear every year, in fact there are also many online stores that do not last long, because the competition is very tight and the marketing strategy is wrong. Every online store owner is trying to find a strategy so that his store survives. The strategy that can be applied is by providing product recommendations that are in accordance with consumer desires. The ability of shop owners to see consumer wants and needs will have an impact on increasing sales. The ability of the shop owner to organize products and create promotions using certain product combinations. The a priori algorithm is the technique used in this study. In the algorithm, an iteration process is carried out using the minimum support and confidence values to assess each product combination. Then eliminate the combination of items that do not reach the minimum support. Based on this, it is found that the frequency of goods purchased the most simultaneously provides benefits to management in compiling and combining products to optimize marketing. Then take advantage of the confidence value which provides an overview of the relationship between products. Implementation of the a priori algorithm can be used to analyze transaction data for a certain period. So that the results of the information generated by this algorithm can be used in marketing strategies and product promotions that are in accordance with customer desires.

Implementasi Data Mining dengan Metode Apriori Untuk Analisis Pola Penjualan Barang Fashion Ardiansyah, Achmad; Midtaqulhuda, M
J-SAKTI (Jurnal Sains Komputer dan Informatika) Vol 6, No 2 (2022): EDISI SEPTEMBER
Publisher : STIKOM Tunas Bangsa Pematangsiantar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30645/j-sakti.v6i2.534

Technological developments are quite felt for all lines of life that do not exist in the trading business sector. The proliferation of online stores is one of the impacts of technological developments that change the way consumers think in transactions. Although many online stores appear every year, in fact there are also many online stores that do not last long, because the competition is very tight and the marketing strategy is wrong. Every online store owner is trying to find a strategy so that his store survives. The strategy that can be applied is by providing product recommendations that are in accordance with consumer desires. The ability of shop owners to see consumer wants and needs will have an impact on increasing sales. The ability of the shop owner to organize products and create promotions using certain product combinations. The a priori algorithm is the technique used in this study. In the algorithm, an iteration process is carried out using the minimum support and confidence values to assess each product combination. Then eliminate the combination of items that do not reach the minimum support. Based on this, it is found that the frequency of goods purchased the most simultaneously provides benefits to management in compiling and combining products to optimize marketing. Then take advantage of the confidence value which provides an overview of the relationship between products. Implementation of the a priori algorithm can be used to analyze transaction data for a certain period. So that the results of the information generated by this algorithm can be used in marketing strategies and product promotions that are in accordance with customer desires.

Rancang Bangun Trainer Air Conditioning Jenis Split Untuk Media Pembelajaran: Rancang Bangun Trainer Air Conditioning Jenis Split Untuk Media Pembelajaran Ardiansyah, Achmad
Jurnal Rekayasa Mesin Vol 6 No 01 (2020): JRM. Volume 06 Nomer 01 Tahun 2020
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v6i01.36978

One of the supporting factors for comfort in activities in the room is the installation of air conditioning as air conditioning. Air Conditioning (AC) is an equipment used to condition the air so that it can reach the appropriate temperature and humidity according to comfortable air conditions. So as to provide work comfort for people who carry out certain activities in the room.The principle of air cooling in air conditioning involves the refrigeration cycle, which is the air is cooled by the refrigerant (freon), then the freon is pressed using a compressor until a certain pressure and the temperature rises, then it is cooled by environmental air so that it melts. The process mentioned above runs repeatedly so that it becomes a cycle called the cooling cycle in the air which functions to take heat from the air and release this heat outside the room.The expected results of the design of the trainer air conditioner design can meet the aspects of effectiveness to be achieved, namely aspects of regulations / provisions, aspects of functions / tasks, aspects of plans / programs, aspects of goals / ideal conditions.Based on the table of general construction steel according to DIN 17100 (Sept. 1966) in terms of the tensile stress of the frame material (fmax) St 37 - 2 = 37.18 Kg / mm2 or 364.36 N / mm2, with the safety factor (Sf) = 2, and the allowable tensile stress (fci) = fmax: Sf = 182.18 N / mm2, because the bending stress is 14.08 N / mm2, the calculation result is smaller than the allowable tensile stress of the material which is 182.18 N / mm2, the strength of the frame used is SAFE. Keywords: AC Trainer, AC working principle, Frame strength

Optimalisasi Manajemen Kelas untuk Membangun Lingkungan Belajar yang Kondusif Ardiansyah, Achmad; Rifai, Dede Syukrillah; Yahya, Aliya Izet Begovic
ITQAN: Jurnal Ilmu-ilmu Kependidikan Vol. 16 No. 1 (2025): ITQAN: Jurnal Ilmu-ilmu Kependidikan
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan (FTIK) IAIN Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47766/itqan.v16i1.4977

This study aims to identify and analyze optimal classroom management strategies to enhance students' learning awareness through a literature review approach. A qualitative descriptive method was employed by examining various relevant sources, including books, scholarly journals, and previous research related to classroom management and learning motivation. The findings indicate that effective classroom management encompasses four key dimensions: (1) physical arrangement of the classroom to support comfort, (2) strengthening the teacher's role as a facilitator, (3) implementation of communicative and participatory interactions, and (4) the establishment of a positive and disciplined classroom culture. These strategies significantly contribute to increasing student engagement and learning awareness. The study also identifies both internal (teachers and students) and external (curriculum, facilities, parental support, and classroom climate) factors that either support or hinder classroom management. The main contribution of this study lies in formulating a holistic approach to classroom management by integrating technical and interpersonal aspects as the foundation for fostering students’ learning awareness.

ANALISIS MINAT BELI SEPATU MEREK LOKAL PADA LOKAPASAR : Studi Kasus Generasi Z di Daerah Jabodetabek Ardiansyah, Achmad; Ph.D , Andi Muhammad Sadat, SE., M.Si.,; M.M. , Agung Kresnamurti Rivai P., ST,
Neraca: Jurnal Ekonomi, Manajemen dan Akuntansi Vol. 2 No. 10 (2024): Neraca: Jurnal Ekonomi, Manajemen dan Akuntansi
Publisher : Neraca: Jurnal Ekonomi, Manajemen dan Akuntansi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.572349/neraca.v2i10.2565

Penelitian ini bertujuan untuk mengetahui minat beli sepatu merek lokal pada lokapasar dengan studi kasus Generasi Z di Daerah Jabodetabek. Sampel dalam penelitian ini menggunakan metode purposive sampling. Teknik analisis yang digunakan dalam penelitian ini adalah analisis faktor eksploratori (EFA), analisis tabulasi sederhana, analisis deskriptif, dan skor rata-rata. Hasil pra riset yang dilakukan pada penelitian ini tentang alasan minat beli sepatu merek lokal dibanding sepatu luar negeri studi kasus Generasi Z di daerah Jabodetabek adalah dengan persentase 60% memilih alasan membeli sepatu merek lokal lebih murah dibanding sepatu merek luar negeri, dengan persentase 17,5% memilih alasan membeli sepatu merek lokal karena mendukung merek lokal, dan 15% memilih alasan membeli sepatu merek lokal karena kualitas yang terjamin. Selain itu ada alasan lainnya yaitu model sepatu merek lokal yang bagus dan keren, sepatu merek lokal mudah ditemukan di lokapasar (E-commerce). Teknik analisis yang digunakan dalam penelitian ini adalah analisis tabulasi sederhana, analisis deskriptif, skor rata-rata, dan analisis faktor ekspoloratori (EFA). Hasil uji validitas dalam penelitian ini dikatakan valid karena memiliki r hitung lebih besar dari r tabel sebesar 0,098 dan hasil uji reliabilitas dalam penelitian ini dikatakan reliabel karena cronbach’s alpha > 0,6. Rekomendasi untuk penelitian selanjutnya diharapkan penelitian selanjutnya dapat memperluas objek, subjek dan tempat penelitian, karena penelitian ini hanya mencakup sepatu lokal sebagai objek penelitian dan generasi Z sebagai subjek penelitian dan karena penelitian ini hanya mencakup wilayah Jabodetabek diharapkan penelitian selanjutnya dapat memperluas wilayah penelitian. Kedua, diharapkan bagi peneliti selanjutnya untuk menambah jumlah sampel penelitian sehingga dapat menemukan faktor-faktor lain yang kemungkinan berpotensi mempengaruhi minat beli sepatu lokal. Ketiga, diharapkan penelitian selanjutnya dapat memperkaya teori, metode analisis, dan perspektif yang digunakan untuk menjelaskan minat beli.

PENGENALAN MULTIMEDIA DALAM PEMBELAJARAN: MENGGUNAKAN VIDEO DAN ANIMASI UNTUK EDUKASI Telussa, Sandra Ivonnie; Susanti, Ratna; Firdaus, Firdaus; Tahalele, Olivia; Ardiansyah, Achmad; Kurniasih, Mepa
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 6 No. 2 (2025): Volume 6 No. 2 Tahun 2025
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v6i2.44393

Penggunaan multimedia dalam pembelajaran telah menjadi kebutuhan yang mendesak di era digital saat ini. Kegiatan Pengabdian kepada Masyarakat ini bertujuan untuk mengenalkan penggunaan video dan animasi sebagai media edukasi kepada guru-guru Sekolah Dasar dari berbagai daerah di Indonesia, yaitu Maluku, Surakarta, Kabupaten Barito Kuala (Kalimantan Selatan), dan Jakarta Selatan. Kegiatan dilakukan secara daring melalui aplikasi Zoom Cloud Meeting dan melibatkan 15 guru peserta. Metode pelatihan digunakan dalam bentuk penyampaian materi, demonstrasi, dan praktik langsung. Hasil kegiatan menunjukkan peningkatan signifikan pada pemahaman dan keterampilan guru dalam memanfaatkan video dan animasi untuk pembelajaran. Evaluasi pre-test dan post-test mengindikasikan adanya peningkatan skor rata-rata pada seluruh aspek yang dilatihkan. Secara kualitatif, peserta menunjukkan antusiasme tinggi, menghasilkan karya multimedia sederhana, serta menyatakan komitmen untuk menerapkan hasil pelatihan dalam kegiatan pembelajaran di sekolah masing-masing. Kegiatan ini memberikan dampak positif dalam mendorong transformasi pembelajaran berbasis teknologi dan dapat dikembangkan lebih lanjut melalui riset lanjutan yang menelaah implementasi nyata di kelas.

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