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The Application Of K-Means Algorithm For LQ45 Index on Indonesia Stock Exchange Condrobimo, A. Raharto; Sano, Albert V. Dian; Nindito, Hendro
ComTech: Computer, Mathematics and Engineering Applications Vol 7, No 2 (2016): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v7i2.2256

The objective of this study is to apply cluster analysis or also known as clustering on stocks data listed in LQ45 index at Indonesia Stock Exchange. The problem is that traders need a tool to speed up decision-making process in buying, selling and holding their stocks.The method used in this cluster analysis is k-means algorithm. The data used in this study were taken from Indonesia Stock Exchange. Cluster analysis in this study took data’s characteristics such as stocks volume and value. Results of cluster analysis were presented in the form of grouping of clusters’ members visually. Therefore, this cluster analysis in this study could be used to identify more quickly and efficiently about the members of each cluster of LQ45 index. The results of such identification can be used by beginner-level investors who have started interest in stock investment to help make decision on stocks trading.

Rancang Bangun Software Point of Sale (POS) Pada Kafe XYZ Dikota Jambi Fernando, Erick; Condrobimo, A Raharto; Andwiyan, Denny
Jutis (Jurnal Teknik Informatika) Vol 6 No 1 (2018): Jutis (Jurnal Teknik Informatika)
Publisher : Universitas Islam Syekh Yusuf

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33592/jutis.Vol6.Iss1.43

Kafe XYZ yang berada di wilayah kota Jambi merupakan usaha perdagangan yang bergerak dibidang kuliner. Masalah yang terjadi pada kafe ini belum memiliki sebuah sistem yang dapat menanggulangi masalah transaksi. Sistem dijalankan masih secara manual dengan menggunakan buku catatan biasa proses pemesanan makan sampai struk pembayaran masih menggunakan nota manual. Sistem yang dibangun telah mampu memberikan dampak positif dan bermanfaat baik bagi restoran maupun konsumen. Pengembangan POS menggunakan Metodologi pengembangansistem menggunakan model waterfall dan Pengembangan sistem POS menggunakan pemrograman Java dan database MYSQL. Hasil penelitian ini mendapatkan sebuah sistem yang telah dikembangkan dapat melakukan transaksi yang menghasilkan laporan transaksi dan nota pembayaran untuk konsumen dengan demikian sangat menunjang kegiatan dikafe XYZ tersebut.

Analisis Faktor Latar Belakang Penyebaran Pesan atau Informasi Melalui Aplikasi Media Sosial ( Studi Kasus Mahasiswa di Indonesia) Surjandy Surjandy; Meyliana Meyliana; A.Raharto Condrobimo; Erick Fernando
Jurnal Teknologi Informasi dan Ilmu Komputer Vol 7 No 4: Agustus 2020
Publisher : Fakultas Ilmu Komputer, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jtiik.2020742092

Penggunaan aplikasi media sosial sebagai sarana untuk menyebarkan pesan sangat penting dan dipercaya dapat mempengaruhi penerima pesan untuk membantu menyebarkan kembali pesan yang diterima kepada orang lain, penggunaan aplikasi media sosial untuk keperluan industri seperti untuk iklan atau pemasaran produk. Namun pesan yang tersebar di media sosial sangat rentan sehingga sangat memungkinkan pesan telah dilakukan modifikasi atau perubahan sehingga menjadi pesan yang tidak benar (hoax/fake news) yang kemudian disebar luaskan melalui aplikasi media sosial. Dari hal tersebut, pada penelitian ini yang menggunakan explanatory (causal) research atau penelitian yang mencari hubungan antar dua faktor. Sebagai sampel responden pengguna terbesar internet di Indonesia saat ini adalah mahasiswa sebesar 127,9 juta menurut AJPII, oleh sebab itu penelitian ini mencoba untuk melakukan explorasi bagimana pengaruh latar belakang penyebar pesan dalam hal ini mahasiswa seperti jenis kelamin, umur, tingkat semester, dan waktu yang digunakan menggunakan aplikasi media sosial yang digunakan, apakah mempengaruhi mahasiswa atau mahasiswi dalam melakukan penyebaran informasi/pesan melalui aplikasi media sosial. Aplikasi SPSS digunakan untuk memvalidasi data dan fungsi Correlation Bivariat digunakan untuk memproses data dalam mencari hubungan antara dua faktor. Dari penelitian ini ditemukan 5 pasangan faktor yang mempunyai hubungan untuk mempengaruhi, dimana dari temuan ini akan sangat bermanfaat untuk penelitian selanjutnya. AbstractThe use of social media applications as a means to disseminate messages is very essential and is believed to affect the recipient of the message to help redistribute messages received to other, the use of social media applications for industrial purposes such as advertising or product marketing. However, messages spread on social media are very vulnerable, so it is possible for messages to have been modified or changed so that they become untrue messages (hoaxes) which are then disseminated through social media applications. From this, in this study using explanatory (causal) research or research that seeks relationships between two factors. As the sample 388 respondents of the total population users of the internet in Indonesia students are 127.9 million according to AJPII, therefore this study tries to explore how the influence of the message disseminator background in this case university students such as gender, age, semester level, and time which is used using social media applications that are used, whether it affects university student in disseminating information / messages through social media applications. The SPSS applications is used to validated data and the Bivariate Correlation functions is used to process data in finding relationships between two factors. From this study found 5 pairs of factors that have relationship to influence, it means gender and longtime use media sosial as an essential factor to minimise dissemination of hoax or fake news which of these findings will be very useful for future research.

Evaluasi Penerapan IT Governance pada Bank berdasarkan Cobit 5 (Studi Kasus pada Bank XYZ) Surjandy Surjandy; Erick Fernando; A.Raharto Condrobimo; Mohammad Rizky Yudho
Jurnal Teknologi Informasi dan Ilmu Komputer Vol 7 No 3: Juni 2020
Publisher : Fakultas Ilmu Komputer, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jtiik.2020731457

Pencurian dana nasabah dengan menggunakan Teknologi Informasi masih terjadi hingga saat ini seperti yang dilaporkan pada web Finance.detik.com dimana dana tabungan nasabah hilang dan hal ini terjadi tidak hanya pada 1 bank namun beberapa bank. Pada penelitian sebelumnya yang telah dilakukan dibeberapa bank menggunakan framework COBIT 4.1. Oleh karena itu penelitian ini akan melakukan evaluasi pada sebuah bank (bank xyz) mengenai penerapan tata kelola penggembangan sistem dengan acuan kerangka kerja COBIT 5. Pada dasarnya penelitian ini untuk melihat bagaimana sebuah bank melakukan pengembangan sistem, apakah mengikuti kerangka kerja COBIT 5? Metode penelitian kualitatif digunakan pada penelitian ini dan kerangka kerja COBIT 5 Process Assessment Model (PAM) mencakup unsur keamanan data dan tata kelola Teknologi Informasi (IT Governance). Sebagai kesimpulan dari hasil evaluasi bahwa masih perlunya peningkatan dalam manajemen pengembangan sistem pada bank.AbstractThe theft of customer funds through the use of Information Technology continues to occur today as reported on the website Finance.detik.com, where clients' savings funds are lost, and this not only happens in 1 bank but in several banks. The early research conducted at several bank using COBIT 4.1 framework. Therefore, this study will perform an evaluation in a XYZ Bank on the implementation of Information Technology governance in the development of the system with a reference to the COBIT 5 framework. Basically, this research is to see how a bank develops the system follows the COBIT framework 5? The Framework Process Evaluation Model (PAM) of COBIT 5 includes elements of data security and Information Technology governance. The conclusion of the evaluation of the study show that there is still a need to improve the development of the system in the bank

Analysis of the relationship of the learning video with students 'understanding of learning materials Yulyani Arifin; Diana Syarifah Permai; Dicky Hida Syahchari; Raharto Condrobimo
Social Economics and Ecology International Journal (SEEIJ) Vol. 5 No. 1 (2021): March
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/seeij.v5i1.7369

The aim of the study was to examine the relationship between the relationship between instructional videos and students' understanding of the learning material. Researchers create digital learning materials through video material (VBL), especially math in RPTRA. The researchers used correlation analysis to examine the relationship between the learning material in video form and the level of understanding of the students in the material. The method used by the researcher was to experiment with elementary-level children from various primary schools. Then, based on the experimental results, the correlation analysis test was performed to see the relationship between the student's understanding and the learning material through video. From the results of the assessment, it can be seen that the video material can help the understanding of the students and can also increase the motivation of the students in learning mathematics. Therefore, video learning can help students understand mathematics and help teachers teach mathematics in a more interesting way.

The Application Of K-Means Algorithm For LQ45 Index on Indonesia Stock Exchange A. Raharto Condrobimo; Albert V. Dian Sano; Hendro Nindito
ComTech: Computer, Mathematics and Engineering Applications Vol. 7 No. 2 (2016): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v7i2.2256

The objective of this study is to apply cluster analysis or also known as clustering on stocks data listed in LQ45 index at Indonesia Stock Exchange. The problem is that traders need a tool to speed up decision-making process in buying, selling and holding their stocks.The method used in this cluster analysis is k-means algorithm. The data used in this study were taken from Indonesia Stock Exchange. Cluster analysis in this study took data’s characteristics such as stocks volume and value. Results of cluster analysis were presented in the form of grouping of clusters’ members visually. Therefore, this cluster analysis in this study could be used to identify more quickly and efficiently about the members of each cluster of LQ45 index. The results of such identification can be used by beginner-level investors who have started interest in stock investment to help make decision on stocks trading.

Design Aplikasi Mobile Sistem Informasi Geografis Panduan Lokasi SPBU Erick Fernando; A. Raharjo Condrobimo
Jurnal SISKOM-KB (Sistem Komputer dan Kecerdasan Buatan) Vol. 3 No. 1 (2019): Volume III - Nomor 1 - September 2019
Publisher : Teknik Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (785.726 KB)

Indonesia is the largest archipelago country in the world consisting of 17,499 islands from Sabang to Merauke. With so many areas in Indonesia that has so many areas scattered and, in every place, has a place for Public Fuel Filling Station (SPBU). With the distribution of gas stations based on regions in Indonesia, information is needed on the existence or position or location of gas stations to facilitate vehicle users to find gas stations. The aim of this research is to develop an application for gas station location instructions so that it can provide detailed information on the position and facilities at the gas station. Application development uses the waterfall approach and uses the Android programming language to build mobile applications. Evaluate application testing with the black box approach, that the application can run in accordance with the functions of each menu on the application so that the application can be used by users. This application can facilitate the user (user) in searching for locations from existing gas stations quickly and precisely and can be accessed by anyone, anytime, and anywhere.

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