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All Journal Sinkron : Jurnal dan Penelitian Teknik Informatika ALGORITMA : JURNAL ILMU KOMPUTER DAN INFORMATIKA JURNAL PENDIDIKAN TAMBUSAI JURNAL TEKNOLOGI DAN ILMU KOMPUTER PRIMA (JUTIKOMP) E-Link: Jurnal Teknik Elektro dan Informatika Journal of Computer Networks, Architecture and High Performance Computing JiTEKH (Jurnal Ilmiah Teknologi Harapan) Djtechno: Jurnal Teknologi Informasi Jurnal Pengabdian Masyarakat IPTEK Brilliance: Research of Artificial Intelligence EXPLORER Prosiding Snastikom Jurnal Komputer Teknologi Informasi Sistem Komputer (JUKTISI) Digital Transformation Technology (Digitech) Blend Sains Jurnal Teknik Prioritas : Jurnal Pengabdian Kepada Masyarakat Literasi: Jurnal Pengabdian Masyarakat dan Inovasi Tekmulogi: Jurnal Pengabdian Masyarakat Jurnal Ilmu Komputer dan Sistem Informasi Jurnal Pengabdian Masyarakat Jurnal Kecerdasan Buatan dan Teknologi Informasi CompTech : Jurnal Ilmu Komputer dan Teknologi
Siregar, Yunita Sari
Universitas Harapan Medan
Religion Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Social Sciences Other

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Analysis of Most Significant Bit (MSB) Steganography Method in an IoT-Based Keyboard Learning System Darinda Sofia Tanjung; Sari Siregar, Yunita; Juliana, Juliana
Brilliance: Research of Artificial Intelligence Vol. 5 No. 1 (2025): Brilliance: Research of Artificial Intelligence, Article Research May 2025
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v5i1.5179

Abstract

The advancement of digital technology has driven the development of Internet of Things (IoT)-based learning systems to enhance efficiency and interactivity in the teaching and learning process.  IoT implementations is the development of a sensor-based keyboard learning system. This system is designed to help users improve their typing skills through monitoring parameters such as typing speed, keypress patterns, and usage duration. This data becomes an important asset that requires protection due to its connection to user privacy and personal performance evaluation. In IoT-based systems, data is typically transmitted through networks that are potentially vulnerable to security threats, such as eavesdropping, modification, or theft of data or information. The development of this system is carried out in a sensor-based keyboard learning application with IoT integration, which is equipped with data security features using steganography techniques. Steganography is a technique used to hide data or information within a digital medium so that it cannot be accessed by others. The method used is the  Most Significant Bit (MSB), a simple steganography algorithm that utilizes significant bits from image files to embed secret messages. This research aims to analyze the effectiveness of the MSB method in protecting user data stored and transmitted through IoT system. The implementation is carried out on a sensor-based keyboard learning system, where the data collected from the sensors is used to track typing speed, keypress patterns, and typing duration. This data is encrypted using MSB steganography and embedded into a cover image before being transmitted through the IoT network.
Pelatihan Microsoft Office Dalam Pembuatan Modul Ajar Bagi Guru SD Swasta Bani Adam AS Siregar, Yunita Sari; Sembiring, Boni Oktaviana; Damanik, Almerinda Regina Puspa Sari
Jurnal Pengabdian Masyarakat Vol. 4 No. 1 (2025): Juni 2025
Publisher : Unity Academy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70340/japamas.v4i1.208

Abstract

This Microsoft Office training program aims to enhance the ability of teachers at Bani Adam AS Private Elementary School in developing effective and engaging digital teaching modules. The training was conducted through a hands-on approach, covering material on text processing using Microsoft Word and the use of PowerPoint as the primary medium for preparing instructional content. Evaluation was carried out through pre-tests and post-tests, as well as observation of participants’ work. The results of the training showed a significant improvement in teachers’ understanding and skills in designing teaching modules that are more interactive, well-structured, and aligned with the curriculum. Furthermore, the training encouraged teachers to be more creative in presenting technology-based learning materials, thereby improving the quality of classroom instruction.  The positive impact of this activity serves as a strong foundation for organizing follow-up training programs to further expand teachers’ proficiency in using digital technologies in education.
Application Optimazion Of Fidelity Watermarking Digital Imegery Discrete Fourier Transform Method And Rivest Shamir Adleman Algorithm Wulan, Nur; Harahap, Herlina; Sari Siregar, Yunita
Brilliance: Research of Artificial Intelligence Vol. 4 No. 2 (2024): Brilliance: Research of Artificial Intelligence, Article Research November 2024
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v4i2.5126

Abstract

As the field of information and communication technology continues to evolve, the potential for digital crimes increases significantly. Information technology plays a key role in facilitating various human activities in the fields of communication and data exchange. The use of digital data, such as documents, photos, videos, and audio, still creates many challenges in proving ownership.. The proliferation of social media platforms like Facebook, Instagram, and TikTok has made it easier for individuals to duplicate, damage, or even steal content, often for malicious purposes related to copyright infringement.To secure digital image data, the technique of fidelity watermarking using Discrete Fourier Transform (DFT) and cryptographic authentication with the Rivest-Shamir-Adleman (RSA) algorithm can be utilized. Watermarking is a technique that embeds information into an image, serving to provide identification marks and secure copyright information. This process does not damage the original image quality. DFT is a watermarking technique that has the capability to convert the image back to the spatial domain after embedding the watermark. On the other hand, RSA is a cryptographic technique that enables data encryption using a public key and decryption with a private key. In the context of image watermarking, RSA is used to secure the watermark information embedded within the image. Watermark information that is encrypted using the public key can only be accessed or decrypted by the party possessing the private key. This enhances the security of the watermark and ensures that the information embedded within the image remains safe, even if the image is shared.
PKM Pemanfaatan Aplikasi Augmented Reality Interaktif Dalam Pembelajaran Pra Literasi dan Pra Numerasi Anak Usia Dini Pada TK Amanda Sibolga Azanuddin; Sari Siregar, Yunita; Saleh, Amir; Jannah, Miftahul; Regina Puspa Sari Damanik, Almerinda
Prioritas: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 02 (2025): EDISI SEPTEMBER 2025
Publisher : Universitas Harapan Medan

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

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk menerapkan teknologi Augmented Reality (AR) sebagai media pembelajaran interaktif bagi anak usia dini, khususnya dalam pengenalan huruf dan angka pada tahap pra-literasi dan pra-numerasi. Mitra kegiatan, TK Amanda Sibolga di Kota Sibolga, menghadapi kendala kurangnya media pembelajaran digital yang menarik dan interaktif. Proses belajar masih bersifat konvensional sehingga anak-anak mudah bosan dan guru kesulitan menghadirkan pembelajaran yang menyenangkan. Solusi yang ditawarkan adalah pengembangan aplikasi AR berbasis Android yang menampilkan huruf dan angka dalam bentuk tiga dimensi (3D) melalui kartu bergambar (flashcard) sebagai penanda (marker). Saat dipindai dengan kamera ponsel, objek huruf dan angka akan muncul dalam bentuk animasi berwarna cerah, sehingga menarik perhatian anak dan membantu memahami konsep dasar dengan cara visual dan menyenangkan. Kegiatan dilaksanakan melalui tahapan observasi, pelatihan guru, penerapan aplikasi di kelas, serta evaluasi hasil pembelajaran. Guru diberikan pendampingan untuk mengoperasikan aplikasi dan mengintegrasikannya dalam kegiatan belajar. Hasil menunjukkan peningkatan minat dan partisipasi anak dalam mengenal huruf dan angka, serta meningkatnya kemampuan guru dalam menggunakan teknologi pembelajaran. Program ini menjadi langkah nyata dalam mendukung transformasi digital pendidikan anak usia dini dan memperkuat peran perguruan tinggi dalam pemerataan akses teknologi di daerah.
Penerapan Animasi 2D pada Edukasi Safety terhadap Gunung Berapi dengan Metode 2D Hybrid Animation Paramita, Indah; Siregar, Yunita Sari; Lubis, Yessi Fitri Annisah
Jurnal Pendidikan Tambusai Vol. 8 No. 1 (2024): April 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v8i1.14094

Abstract

Perancangan animasi 2D bertujuan untuk mengedukasi siswa-siswa berumur sampai 18 tahun yang masih minim pengetahuan tentang bahaya erupsi gunung berapi. Gunung berapi merupakan salah satu bencana berbahaya yang ditakuti banyak orang, maka dari itu perlunya edukasi untuk penyelamatan diri apabila terjadinya bencana. Penelitian ini dibuat dengan tujuan mengedukasi yang mampu diterima siswa-siswa dengan lebih menarik, edukasi ini berguna untuk kesiapsiagaan akan terjadinya erupsi gunung berapi. Animasi 2D ini dibuat dengan teknik 2D Hybrid Animation, teknik ini merupakan teknik yang mengkombinasikan dari gambar yang digambar tangan di atas kertas, yang dipindai dan ditransfer ke komputer, kemudian diubah menjadi gambar digital. Dengan menggunakan teknik 2D hybrid animation dapat membantu menganimasikan grafis, sekaligus dalam ukuran besar, dengan cepat dan mampu mengerjakan sejumlah frame dengan urutan. Animasi ini dibuat dengan kemenarikan, sehingga animasi ini dapat lebih mudah dipahami siswa. Video animasi 2D yang dihasilkan ini dapat mengedukasi siswa berumur sampai 18 tahun yang masih sedikit pengetahuannya tentang bahayanya gunung berapi yang masih aktif di Indonesia ini, Animasi ini dapat memberikan pengalaman belajar yang lebih mudah dipahami.
Implementation Of The Data Mining Cart Algorithm In The Characteristic Pattern Of New Student Admissions Siregar, Ahmad Syahban Rifandy; Siregar, Yunita Sari; Khairani, Mufida
Journal of Computer Networks, Architecture and High Performance Computing Vol. 5 No. 1 (2023): Article Research Volume 5 Issue 1, January 2023
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/cnahpc.v5i1.1975

Abstract

University of Harapan Medan is one of the private universities in North Sumatra which has an Informatics Engineering Study Program with Good Accreditation. With better accreditation, the number of students who register is also increasing. At the admission of new students, the committee has a huge pile of data, making it difficult in the process of whether the student passed or did not pass. Therefore, in this study, we will implement data mining with the CART (Classification And Regression Tree) algorithm. Data mining is a technique to determine the characteristic pattern of a variable or data criteria with a large amount. In the CART method, the data is first converted into testing data, which will then be used to form a classification tree by calculating the value of information gain, Gini index and goodness of split. From the results obtained, it will be re-determined terminal nodes, marking class labels and finally pruning the classification tree which produces a decision tree. In this study, the number of testing data was 75 with 3 criteria, namely the average value of report cards, CAT test scores, and interview scores. The results of testing data testing using RapisMiner 5.3 software produce 23 number of characteristic pattern rules, where node 1 is the CAT test score, level 1 branch node is the interview score criteria and level 2 branch node is the average report card value.
Analysis Of Decision Support Systems Edas Method In New Student Admission Selection Siregar, Yunita Sari; Zakir, Ahmad; Syahputri, Nenna Irsa; Harahap, Herlina; Handoko, Divi
Journal of Computer Networks, Architecture and High Performance Computing Vol. 5 No. 1 (2023): Article Research Volume 5 Issue 1, January 2023
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/cnahpc.v5i1.2057

Abstract

University of Harapan Medan is one of the private tertiary institutions in North Sumatra which has an informatics engineering study program. The informatics engineering study program is a study program that has many enthusiasts. Every year this study program graduates more than 200 students. To produce graduates who have potential, reliability and competence in the field of technology and information, it is necessary to make a selection at the beginning, namely at the time of admission of new students. There are 5 criteria used in the selection process, including the average report card score, basic ability test, computer ability test, psychological test, and interview. Each criterion has 5 weights of values, namely very high, high, medium, low and very low.  The selection process for admission of new informatics engineering students with a decision support system for the EDAS (Evaluation Based On Distance From Average Solution) method.  Where the stages in this method are by normalizing the decision matrix and looking for the average from alternatives, then from these results calculate the average positive distance (PDA) and negative distance (NDA) as well as the assessment of the weighted attribute weights of SPi and SNi, after that the normalization of positive and negative distance weights is carried out for determining the ranking score. From the results of the analysis carried out using the EDAS method, with a sample of 10 prospective students it was concluded that the 6th order student candidate had the highest score with a score of 0.519 and the lowest score in the 7th order student with a score of 0.14. Therefore, the level of accuracy of the EDAS method in selecting new student admissions is around 20%. Of course, this accuracy value will change with large data samples.
Aplikasi Media Pembelajaran Berbasis Game Drag dan Drop Mengenai Flora Dan Fauna Langka Menggunakan Metode Luther dan Computer Based Instruction Pratama, Muhammad Ridzky; Siregar, Yunita Sari; Khairani, Mufida
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 6, No 2 (2022): November 2022
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v6i2.13634

Abstract

Rare flora and fauna are living things other than humans whose ecosystems must be protected because they will become extinct due to rampant poaching and destruction of ecosystems in order to create new agricultural areas. By helping of information technology and programming languages, especially existing web-based applications, there will be very many benefits. One example is the application of web-based learning media applications. Based on the existing problems, a conducting research can assist in the teaching process so that there is a sense of child growth and development to maintain the ecosystem from an early age by adopting technological advances. In designing this web-based application using the Construct 2 application by applying the Luther method and the CBI (Computer Based Instruction) method which will display audio visuals so that it can increase students' interest in learning about rare flora and fauna materials in order to maintain the ecosystem, and make the teaching process no longer find it difficult to understand the material of rare flora and fauna. The results obtained is the creation of a rare flora and fauna learning media application based on drag and drop games using the Luther and the web-based CBI (Computer Based Instruction) method by the application can help facilitate the learning process in order to maintain the flora and fauna ecosystem in nature. Keywords: Flora, fauna, Construct 2, Web, Luther Method, CBI
Rancang Bangun Media Pembelajaran Mengenai Alat Musik Tradisional Jawa Berbasis Macromedia Flash Dengan Menggunakan Metode Computer Based Instruction Dan Multimedia Development Life Cycle Rasyid, Adji Abdur; Harahap, Herlina; Siregar, Yunita Sari
Algoritma: Jurnal Ilmu Komputer dan Informatika Vol 6, No 2 (2022): November 2022
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/algoritma.v6i2.13773

Abstract

A musical instrument is an instrument that is made or modified with the aim of producing a sound or sound that produces a rhythm. Every region in Indonesia must have traditional musical instruments. One of them is a traditional Javanese musical instrument, which consists of Central Java, West Java, and East Java. With the help of information technology and programming languages, especially animations, there will be many benefits. One example is the application of learning media animation. With these benefits, a research is conducted that can help teachers and students by adopting technological advances. The selection of the program in writing this research is to use the macromedia flash application by applying the CBI (Computer Based Instruction) method and the MDLC (Multitimedia Development Life Cycle) method. The results of this study will display a visual animation in the form of a learning media application so that it can increase students' interest in learning about traditional musical instrument material and make students no longer find it difficult to understand the subject matter of traditional musical instruments. Keywords: Traditional Musical Instruments, Macromedia Flash, CBI, MDLC
Implementasi Data Mining Klasifikasi Algoritma Chaid Dalam Menentukan Pola Penerima Mahasiswa Baru Sari Siregar, Yunita; Handoko, Divi; Khairani, Mufida; Syahputri, Nenna Irsa; Harahap, Herlina
Digital Transformation Technology Vol. 3 No. 2 (2023): Artikel Periode September 2023
Publisher : Information Technology and Science(ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/digitech.v3i2.3612

Abstract

Universitas Harapan Medan adalah salah satu Perguruan Tinggi di Sumatera Utara yang memiliki beberapa fakultas, salah satu diantaranya yaitu Fakultas Teknik dan Komputer. Dimana pada fakultas tersebut terdapat 7 program studi yaitu Teknik Elektro, Teknik Sipil, Teknik Mesin, Teknik Informatika Teknik Industri, Sistem Informasi dan Manajemen Informatika. Program studi Teknik Infrmatika merupakan program studi dengan akreditasi B dengan jumlah mahasiswa aktif sampai tahun 2022 yaitu 1.366 orang. Berdasarkan data tersebut dapat dilihat bahwa program studi informatika memiliki jumlah peminat yang sangat banyak bagi mahasiswa. Dalam proses penerimaan mahasiswa baru seringkali membuat susunan berkas yang sangat banyak, sehingga menyulitkan pihak akademik dalam mengelola dan menentukan mahasiswa yang dapat masuk dalam program studi teknik informatika. Oleh sebab itu, diperlukan suatu pola yang dapat menentukan mahasiswa yang lulus dan tidak lulus menggunakan metode klasisfikasi data mining CHAID (Chi Squared Automatic Interaction Detection). Tujuan dalam penelitian ini adalah Merancang model pola karakteristik berdasarkan kriteria dalam seleksi penerimaan mahasiswa baru pada program studi teknik informatikaMenganalisis metode data mining decision tree dengan algoritma CHAID (Chi Squared Automatic Interaction Detection) dalam menentukan siapa yang lulus berdasarkan kriteria-kriteria yang telah ditentukan. Hasil pohon keputusan dalam perancangan pola karakteristik penerimanan calon mahasiswa baru terdapat 43 rule dimana , faktor tertinggi dari ke- 3 faktor yang mempengaruhi pada 75 data testing adalah kriteria Nilai Rapor. Faktor kedua yang juga mempengaruhi hasil keputusan adalah kriteria Ujian CAT (Computer Assisted Test). Dan faktor Nilai Wawancara terakhir yang juga mempengaruhi hasil keputusan adalah kriteria.
Co-Authors Ahmad Rizky Batubara Ahmad Syahban Rifandy Siregar Ahmad Zakir Ahmad Zakir, Ahmad Amir Saleh Andi Arief Ardiantito, Wahyu Arnes Sembiring Azanuddin Boni Oktaviana Sembiring Damanik, Almerinda Regina Puspa Sari Darinda Sofia Tanjung Deasy Arisandy Aruan Dedy Irwan Dewi, Arie Rafika Dhea Rulana Arfasyah P Divi Handoko Divi Handoko Dodi Siregar EKA RAHAYU Franchitika, Rizky Handoko, Divi Harahap, Ferdy Ramadhan Harahap, Herlina Hasdiana, Hasdiana hasdiana, hasdiana Herlina Harahap Indah Paramita, Indah Jessy Safitri Sitorus Jholant Bringg Amelia Juliana Juliana Junus Sinuraya Khairani, Mufida khairani, Mufida Khairunnisa Khairunnisa Lubis, Yessy Fitri Annisa Miftahul Jannah Mufida Khairani Mufida Khairani Mufida Khairani Muhammad Ardi Siregar Muhammad Riki Atsauri Muhammad Yoris Gustiawan Nur Wulan Nur Wulan Nur Wulan, Nur Nurjamiyah, Nurjamiyah Nurul Ain Farhana Oktaviana Sembiring, Boni Pratama, Muhammad Ridzky Rahmatsyah, Indra Ramadhan, Rizki Agung Randika Setyansyah Rasyid, Adji Abdur Regina Puspa Sari Damanik, Almerinda Rendy Irawan Rizki Habibi Roberto Nainggolan Roji Ramadhani Ruditya, Raka Sarudin Sembiring, Boni Oktaviana Siregar, Ahmad Syahban Rifandy Siti Sundari Surya Syahputri, Nenna Irsa Thasya Marha Try Wahyu Permana T Weno Syechu Wiwin Sry Adinda Banjarnahor Yessi Fitri Annisah Lubis