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Pembinaan Pola Pikir Komputasi dan Informatika pada Siswa Sekolah Dasar Sukmawati Nur Endah; Eko Adi Sarwoko; Nurdin Bahtiar; Adi Wibowo; Kabul Kurniawan
E-Dimas: Jurnal Pengabdian kepada Masyarakat Vol 11, No 1 (2020): E-DIMAS
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/e-dimas.v11i1.2317

Bebras adalah sebuah inisiatif internasional yang tujuannya adalah untuk mempromosikan Computational Thinking (Berpikir dengan landasan Komputasi atau Informatika), di kalangan guru dan murid mulai kelas 3 SD, serta untuk masyarakat luas. Berpikir komputasional (Computational Thinking) adalah metode menyelesaikan persoalan dengan menerapkan teknik ilmu komputer (informatika). Tantangan bebras menyajikan soal-soal yang mendorong siswa untuk berpikir kreatif dan kritis dalam menyelesaikan persoalan dengan menerapkan konsep-konsep berpikir komputasional. Cara untuk mempromosikan computational thinking adalah dengan menyelenggarakan kegiatan kompetisi secara daring (on line), yang disebut sebagai "Tantangan Bebras" (Bebras Challenge). Tantangan Bebras bukan hanya sekedar untuk menang. Selain untuk berlomba, tantangan Bebras juga bertujuan agar siswa belajar Computational Thinking selama maupun setelah lomba. Pengabdian ini berupaya untuk mensosialisasikan dan melakukan pembinaan ke sekolah-sekolah mengenai bebras task sehingga harapannya siswanya mampu bersaing untuk ikut dalam Bebras Challenge Indonesia di tahun mendatang. Kegiatan ini meliputi pre test, pembahasan dan post-test terkait soal-soal Bebras (Bebras Task). Hasil kegiatan menunjukkan bahwa adanya peningkatan rata-rata pemahaman pola pikir komputasi dan informatika pada SD Ummul Quro’ sebesar 13,74% untuk siswa kelas IV dan V serta sebesar 10% untuk siswa kelas III.

Perencanaan Sistem Informasi Evaluasi Diri Menggunakan Framework Zachman Nurdin Bahtiar
Performa: Media Ilmiah Teknik Industri Vol 8, No 2 (2009): PERFORMA Vol. 8, No. 2 September 2009
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

Associated with an institutional development, self evaluation is important that cannot be separated from long-term, medium-term, or short-term strategic plans. Self-evaluation involving all the layers or elements of the institution. Information system providing self-evaluation should be made for such purpose. One approach that can be used to design self-evaluation information systems is Zachman’s framework. This framework is suitable used for developing information systems because it involves a variety of perspectives layer that looked different from the system’s perspective. This is consistent with the self-evaluation’s concept that must involve all elemens in the institution, from top management to lowest operational.

Pengembangan Sistem Informasi Data KB dan Analisis Pola Pemilihan Metode Kontrasepsi Menggunakan Algoritma Sql-Based Fp-Growth Yumina Jumiati; Nurdin Bahtiar
Performa: Media Ilmiah Teknik Industri Vol 14, No 2 (2015): PERFORMA Vol. 14 No. 2, September 2015
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

One of Unit Pelaksana Teknis Pemberdayaan Masyarakat, Perempuan, dan Keluarga Berencana (UPT BAPERMASPER dan KB) Region XV District of Mijen’s duty is to lead, plan, do, evaluate, and report the data management in service, management, and control of family planning programs and the empowerment of women in the district. The inadequate number offield officers (PLKB) often become spectacle in collecting and reporting the data KB. Family Planning Data Information System (SIDAK) is developed in order to support the mentioned task to make it easier to report, store, and manage the data. Additionally, SIDAK is equipped with a data analysis feature with association mining technique using SQL-Based FP-Growth algorithm. This algorithm analyze the data KB and create a relation (association rule) between the attributes used for analysis; the wive’s age, the highest education achieved by the couple, the number of children, the welfare level, and the contraception method. The research analysis of 302 dataKBs resulted in maximum support value of 1.66%, maximum confidence value of 100%, and maximum lift ratio of 60.24.

Pengembangan Sistem Informasi Data KB dan Analisis Pola Pemilihan Metode Kontrasepsi Menggunakan Algoritma Sql-Based Fp-Growth Yumina Jumiati; Nurdin Bahtiar
Performa: Media Ilmiah Teknik Industri Vol 15, No 1 (2016): PERFORMA Vol. 15 No. 1, Maret 2016
Publisher : Industrial Engineering Study Program, Faculty of Engineering, Universitas Sebelas Maret

One of Unit Pelaksana Teknis Pemberdayaan Masyarakat, Perempuan, dan Keluarga Berencana (UPT BAPERMASPER dan KB) Region XV District of Mijen’s duty is to lead, plan, do, evaluate, and report the data management in service, management, and control of family planning programs and the empowerment of women in the district. The inadequate number offield officers (PLKB) often become spectacle in collecting and reporting the data KB. Family Planning Data Information System (SIDAK) is developed in order to support the mentioned task to make it easier to report, store, and manage the data. Additionally, SIDAK is equipped with a data analysis feature with association mining technique using SQL-Based FP-Growth algorithm. This algorithm analyze the data KB and create a relation (association rule) between the attributes used for analysis; the wive’s age, the highest education achieved by the couple, the number of children, the welfare level, and the contraception method. The research analysis of 302 dataKBs resulted in maximum support value of 1.66%, maximum confidence value of 100%, and maximum lift ratio of 60.24.

Implementasi Metode Support Vector Machine (SVM) dan t-Distributed Stochastic Neighbor Embedding (t-SNE) untuk Klasifikasi Depresi Abimanyu, Satria; Bahtiar, Nurdin; Adi Sarwoko, Eko
Jurnal Masyarakat Informatika Vol 14, No 2 (2023): JURNAL MASYARAKAT INFORMATIKA
Publisher : Department of Informatics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmasif.14.2.59513

Depresi merupakan salah satu gangguan kesehatan mental. Sekitar 300 juta jiwa atau 3,76% populasi di dunia dari segala usia dan komunitas menderita depresi. WHO memprediksi bahwa depresi akan menjadi penyebab kematian paling berdampak dalam 15 tahun ke depan. Penelitian terdahulu yang melakukan klasifikasi terhadap depresi untuk instrumen Depression Anxiety Stress Scales (DASS-42) masih sangat sedikit. Penelitian ini mengidentifikasi seseorang memiliki kemungkinan depresi, melalui proses pelatihan model klasifikasi menggunakan metode Support Vector Machine dan t-Distributed Stochastic Neighbor Embedding pada set data DASS-42. Set data DASS-42 terdiri dari 39.776 data dan dapat digunakan untuk mengklasifikasi 3 fenomena yang berbeda yaitu, depresi, stress dan kecemasan. Model Support Vector Machine dilatih menggunakan data DASS-42 yang telah dibersihkan, normalisasi dan balancing serta menggunakan atribut yang telah direduksi melalui proses reduksi dimensi t-Distributed Stochastic Neighbor Embedding. Data latih dan data uji dibagi dengan rasio 80:20. Berdasarkan hasil pengujian, implementasi metode Support Vector Machine (SVM) dan t-Distributed Stochastic Neighbor Embedding (t-SNE) untuk klasifikasi depresi pada data DASS-42 menunjukkan performa yang lebih baik dengan akurasi terbaik sebesar 100% pada data sebelum balancing dan 91,71% pada data setelah balancing.

Applying the Scrum Method in Software Development for Undergraduate Thesis Project Implementation Ramadhan, Attaf Riski Putra; Waspada, Indra; Bahtiar, Nurdin; Pramayoga, Adhe Setya
Jurnal Masyarakat Informatika Vol 16, No 1 (2025): May 2025
Publisher : Department of Informatics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmasif.16.1.73187

The Scrum Method, as one of the frameworks within Agile-based software development, has become the de facto standard in industry practices. However, to date, there is no specific guideline or adaptation model that directs the application of Scrum in undergraduate thesis project settings, particularly within the Bachelor of Informatics Study Program at Diponegoro University. In this program, the final project is carried out individually by a student under the supervision of two academic advisors, forming a small team structure that differs from conventional Scrum configurations. This study proposes an adaptation model of the Scrum method for such a scenario, assigning the roles of Product Owner and Tester to the First Supervisor, Scrum Master and Tester to the Second Supervisor, and Developer as well as Assistant to the Student. The implementation of Scrum in this context facilitates structured communication between supervisors and the student, while also supporting flexibility in accommodating changing requirements throughout the development process. Moreover, active stakeholder involvement during the requirements gathering and Sprint Review stages contributes to the enhanced quality of the final deliverable. The project was executed over four sprints within a total of 40 working days, covering 13 product backlog and several derivative tasks. The findings indicate that adapting Scrum to the context of a final project enables timely project completion with outcomes that are academically and technically accountable.

Key Matrix Generation Using Random Functions in Hill Cipher Modulo 95 Cryptography Bahtiar, Nurdin; Widodo, Aris Puji; Puspita, Nikken Prima
Integra: Journal of Integrated Mathematics and Computer Science Vol. 2 No. 1 (2025): March
Publisher : Magister Program of Mathematics, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/integrajimcs.20252111

In symmetric cryptography, the confidentiality of the chosen key and the security of its delivery mechanism are paramount to minimize the risk of unauthorized disclosure. Typically, in such systems, the sender and recipient focus primarily on the message (plaintext and ciphertext) rather than the complexities associated with key management. This approach aims to alleviate the burden of selecting a suitable and robust key for communicating parties. This study introduces a Hill Cipher modulo 95 cryptography method employing a matrix-based key, where key generation is achieved through a quantifiable randomization algorithm. The developed 2x2 key matrix facilitates a substantial number of possible keys, specifically 954 (exceeding 81 million). The key matrix generation process incorporates several functions, including those for ASCII character conversion, prime number verification, relative primality checks, modulo arithmetic, inverse modulo computation, determinant calculation, and inverse matrix determination. To simulate the encryption and decryption process, a desktop application was developed using the Lazarus Development IDE version 3.6. The application demonstrates effective generation of the required key matrix.

Pengembangan Game Edukasi Digital Tema Seni dan Bahasa dengan Metode Multimedia Development Life Cycle Nurul, Hanan; Nugraheni, Dinar Mutiara Kusumo; Noranita, Beta; Bahtiar, Nurdin
Jurnal Sistem Informasi Bisnis Vol 14, No 3 (2024): Volume 14 Nomor 3 Tahun 2024
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21456/vol14iss3pp302-310

Education for early childhood, especially for PAUD TK-B in the age range of 4-6 years, is crucial in providing and shaping the foundation of children's knowledge. An engaging teaching method will enhance children's interest in learning, thus the need for digital learning media as an alternative. One step in implementing digital learning is through Educational Games. This research is conducted by developing the PAUD TK-B Nurussunnah Educational Game using the Multimedia Development Life Cycle (MDLC) method. The game's validation includes usability aspects such as effectiveness, satisfaction levels, and adaptation to the TK-B curriculum. After development, the educational game undergoes alpha and beta testing using the black box method. Beta testing involves evaluating usability for the efficiency and satisfaction of TK-B students, with an effectiveness rate of 98.94% and satisfaction rate of 88.57%. The interview results with expert teachers indicate that the educational game aligns with the curriculum at the educational unit level for PAUD. Thus, based on the research findings, the PAUD TK-B Educational Game application can be considered an alternative learning media for TK-B students.

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