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Sistem Pendukung Keputusan Menyeleksi Saham LQ45 untuk Generasi Milenial Menggunakan Metode SAW Kevin Stevian Hermawan; Kristoko Dwi Hartomo
InfoTekJar : Jurnal Nasional Informatika dan Teknologi Jaringan Vol 5, No 2 (2021): InfoTekJar Maret
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/infotekjar.v5i2.3455

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Stocks as an investment instrument are in great demand by millennials because of their lucrative returns. LQ45 is an index introduced by IDX which is selected based on liquidity and market capitalization. However, in LQ45 not all existing shares can be purchased by the millennial generation because the price is quite expensive and these stocks still need to be selected so that they get the stocks that have the best quality but at prices that are friendly to millennials. To support this, we need a system that can support proper decision making so that it can get the best alternative in making decisions. This study uses the SAW method in which this method is able to select existing alternatives based on predetermined categories. This study determines each weight value in each attribute, then ranks it so as to produce the best alternative from the available alternatives. The results showed that HMSP shares with a value of 0.870 are the best alternative as stocks for the millennial generation. This research can be a tool in making decisions before buying stocks
Rancang Bangun Aplikasi Penjualan Online Berbasis Web Menggunakan Metode Scrum Aryanata Andipradana; Kristoko Dwi Hartomo
Jurnal Algoritma Vol 18 No 1 (2021): Jurnal Algoritma
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/algoritma/v.18-1.869

Abstract

UPTD SPNF SKB Salatiga mempunyai salah satu program pelatihan kerja dimana program kerja tersebut menghasilkan banyak UMKM di kota Salatiga. Namun dengan situasi pandemi COVID-19 saat ini penjualan dari UMKM yang dihasilkan oleh pelatihan kerja tersebut menurun. Pembangunan aplikasi penjualan online berbasis web merupakan salah satu upaya untuk memberikan wadah dan memasarkan produk UMKM secara digital. Proses penjualan hingga transaksi juga dikerjakan melalui sistem yang akan dibangun. Metode yang akan digunakan dalam membangun aplikasi tersebut adalah Agile software development dengan Scrum model. Metode ini bersifat fleksibel terhadap perubahan kebutuhan sistem yang ada, serta anggota tim yang dibutuhkan oleh pengembangan aplikasi ini juga tidak banyak. Tujuan dari penelitian ini adalah untuk merancang dan membangun aplikasi penjualan online berbasis web untuk UPTD SPNF SKB Salatiga menggunakan metode pengembangan sistem yang dapat menyesuaikan perubahan dengan cepat. Sehingga menghasilkan suatu sistem yang layak pakai dan sesuai dengan tujuan yang sudah ditetapkan. Hasil penelitian ini adalah sebuah aplikasi penjualan yang dapat memasarkan produk secara online dan membantu dalam pengelolaan transaksi serta pelaporan menggunakan sistem yang ada. Pembangunan aplikasi online berbasis web tersebut menggunakan bahasa pemrograman PHP dengan kerangka kerja CodeIgniter, dan database MySQL.
Analisis High Availability Pada Sistem Berbasis Teknologi Oracle Data Guard (Studi Kasus SIA-SAT UKSW) Hartomo, Kristoko Dwi; P, T. Arie Setiawan; Pratama, Sandy
Jurnal Buana Informatika Jurnal Buana Informatika Volume 1 Nomor 1 Januari 2010
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (545.698 KB)

Abstract

Abstract. High Availability on Oracle Data Guard-based System (Case Study: SIA-SAT UKSW). SIA-SAT is a subject administration system for UKSW collegian. Database SIA-SAT is backuped by autobackup system, and backup file sent directly to backup server at another building. Until these days, database SIA-SAT system still does not have a secondary database (backup) which can replace main database when failure is happening on main database.Oracle Data Guard System is a technology researched by Oracle to increase availability level on Oracle Database server. Every transaction is saved on main server and duplicated for standby database server. The advantages point of technology is standby database which indirectly becomes a backup server, and standby database can be used for replacing main database.The result of this research is the technology of Oracle Data Guard can increase availability level for a system Oracle Database. This condition can happen because standby database always duplicates data and is ready to replace primary database.Keywords: availability, data guard, database distributionAbstrak. SIA-SAT adalah sebuah sistem administrasi mata kuliah untuk mahasiswa. Basis data SIA-SAT dicadangkan oleh sistem cadang otomatis, dan berkas cadangan tersebut dikirimkan secara langsung ke server cadangan yang terletak di gedung lain. Hingga saat ini, sistem basis data SIA-SAT masih belum memiliki basis data sekunder (cadangan) yang dapat menggantikan basis data utama jika kegagalan terjadi pada basis data utama. Oracle Data Guard System adalah sebuah teknologi yang diteliti oleh Oracle untuk meningkatkan tingkat ketersediaan pada Oracle Database server. Setiap transaksi disimpan pada server utama dan diduplikasi untuk standby database server. Manfaat dari teknologi ini adalah standby database secara tidak langsung menjadi server cadangan, dan standby database dapat digunakan untuk menggantikan basis data utama. Hasil dari penelitian ini adalah teknologi Oracle Data Guard dapat meningkatkan tingkat ketersediaan untuk sistem Oracle Database. Kondisi ini dapat tercapai karena standby database selalu menduplikasi data dan siap untuk menggantikan basis data primer.Kata Kunci: ketersediaan, data guard, distribusi basis data
Rancangan Model Manajemen Pengetahuan Untuk Perencanaan Pola Tanam Efektif Tanaman Pangan Berbasis Spatial Mining Sediyono, Eko; Hartomo, Kristoko Dwi; Yulianto, Sri
Jurnal Buana Informatika Vol 3, No 2 (2012): Jurnal Buana Informatika Volume 3 Nomor 2 Juli 2012
Publisher : Universitas Atma Jaya Yogyakarta

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

Abstract

Abstract. This paper discusses the knowledge management modeling for planning the effective planting pattern based on spatial mining.  The knowledge management is developed as a portal from traditional pranata mangsa (season reading) knowledge which is well known among Javanese and Balinese people and is plotted to the digital map. The content of the system is also combined with the recent research results about pranata mangsa, and planting patterns of the crops in many places in Java and Bali.    The application is experimented in Boyolali District. This system gives practical knowledge to farmers, in addition to developing a knowledge sharing culture among farmers and agricultural service officers in many places by using Web.Keywords: Knowledge Management, Knowledge sharing, pranata mangsa, Effective planting pattern. Abstrak. Paper ini membahas tentang rancangan model manajemen pengetahuan (knowledge management) untuk perencanaan pola tanam efektif tanaman pangan berbasis pencarian data spasial (spatial mining). Aplikasi manajemen pengetahuan yang dibangun akan menjadi portal bagi pengetahuan-pengetahuan mengenai pranata mangsa tradisional yang diketahui oleh masyarakat diberbagai daerah di Jawa dan Bali, dilengkapi dengan lokasi masing-masing pengetahun yang dipetakan dalam peta digital. Selain itu sistem yang dibangun juga menggabungkan data hasil penelitian terbaru mengenai pranata mangsa terbarukan dan data pola tanam tanaman pangan di berbagai daerah di Jawa dan Bali. Rancangan model diuji coba di daerah Kabupaten Boyolali. Selain memberikan pengetahuan yang bermanfaat secara praktis bagi petani, sistem ini dapat menumbuhkan budaya penyebaran pengetahuan (Knowledge Sharing) diantara para petani dan petugas dinas pertanian di berbagai daerah melalui Web.Kata kunci: manajemen pengetahuan, knowledge sharing, pranata mangsa,  pola tanam efektif.
Satellite imagery and machine learning for aridity disaster classification using vegetation indices Sri Yulianto Joko Prasetyo; Kristoko Dwi Hartomo; Mila Chrismawati Paseleng; Dian Widiyanto Chandra; Edi Winarko
Bulletin of Electrical Engineering and Informatics Vol 9, No 3: June 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1593.071 KB) | DOI: 10.11591/eei.v9i3.1916

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Central Java Province is one of provinces in Indonesia that has a high aridity risk index. Aridity disaster risk monitoring and detection can be done more accurately in larger areas and with lower costs if the vegetation index is extracted from the remote sensing imagery. This study aims to provide accurate aridity risk index information using spectral vegetation index data obtained from LANDSAT 8 OLI satellite. The classification of drought risk areas was carried out using k-nn with the Spatial Autocorrelation method. The spectral vegetation indices used in the study are NDVI, SAVI, VHI, TCI and VCI. The results show a positive correlation and trend between the spectral vegetation index influenced by seasonal dynamics and the characteristics of the High R.A. and Middle R.A. drought risk areas. The highest correlation coefficient is SAVI with a High R.A. amounted to 0.967 and Middle R.A. amounted to 0.951. The results of the Kappa accuracy test comparison show that SVM and k-nn have the same accuracy of 88.30. The result of spatial prediction using the IDW method shows that spectral vegetation index data that initially as an outlier, using the k-nn method, the spectral vegetation index data can be identified as data in the aridity classification. The spatial connectivity test among sub-districts that experience drought was done using Moran’s I Analysis.
Visualization of Sales Field Activity Data Using Operations Dashboard for ArcGIS Angelia Destriana; Kristoko Dwi Hartomo; Hanna Prillysca Chernovita
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 4 No 4 (2020): Agustus 2020
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v4i4.2096

Abstract

The process of manually recording and visualizing data that has high and complicated transaction rates, is no longer relevant for analyzing errors that often occur in company. The impact is the information generated becomes inaccurate in decision making. Problems that are often experienced by companies in visualizing data are non-real-time, non-integrated data, and irregular data visualization. In an effort to minimize problems such as real-time, not integrated, and irregular data visualization, the role of data visualization is needed to improve company performance. Based on these problems the researcher provides a solution, namely designing a geographic information system visualizing sales field activity data, by providing information about visualizing sales field activity data in real-time through the widget contained in the Operations Dashboard for ArcGIS (ODA). The stages of this research are the study of literature, entering polygon zones, making application-based forms, making application-based coordination, inputting dummy data, collecting data, making maps, making data visualization applications, and analyzing data. The results of this study can monitor workers who have good performance that is seen from the indicator completed most of each worker shows that geobiz_admin has completed as many as 6 completed. And can know the movement (tracking) of workers who come out of the work zone, from the analysis there is one mobile worker who came out of Zone II and entered Zone I and Zone III.
IMPLEMENTASI METODE INTERPOLASI LINEAR UNTUK PEMBESARAN RESOLUSI CITRA Kristoko Dwi Hartomo
Teknoin Vol. 11 No. 3 (2006)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/.v11i3.89

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Processing an image is a process and image analysis which entangling many visual perceptions and in course have some characteristics of input data and output information in binding digital image. Process of changing measure for an image through magnification of resolution or measure often needed to showing the detail, for demonstration at a physic appliance, and for making of document. At the process on enlarging image resolution, method that would be used in this paper is linear interpolation. Linear Interpolation Method is mathematics algorithm which could be applied to appraise the middle price point through a diametrical line, two successive input point. The system in this paper could process image with algorithm of linear interpolation and become a new photo image with image resolution of pixel larger than the original image.Keywords: image, resolution, linear, interpolation, pixel
Implementasi Algoritma TOPSIS dan Metode EUCS untuk Pengujian Sistem Penilaian Kinerja Pegawai pada Laboran Fakultas Teknologi Informasi UKSW Salatiga Andreas Arga Rinjani Saputro; Kristoko Dwi Hartomo
Jurnal Teknologi Informasi dan Ilmu Komputer Vol 7, No 6: Desember 2020
Publisher : Fakultas Ilmu Komputer, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jtiik.2020722353

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Pegawai laboratorium merupakan tenaga kerja kependidikan yang membantu proses pembelajaran mahasiswa dalam bagian vokasi dan akademik. Dalam menjalankan pekerjaannya, pegawai laboratorium terkadang masih belum maksimal. Sehingga kepala sarana & prasarana dan supervisor harus mengontrol pegawai untuk memastikan pegawai berkerja dengan baik. Untuk mengatasi permasalahan dalam pegawai laboratorium serta membantu dalam memanajemen kinerja, dibuatlah sistem informasi berbasis website yang berisi implementasi algoritma TOPSIS pada penilaian kinerja pegawai laboratorium. Terdapat enam kriteria penilaian pegawai laboratorium yang terdiri dari kedisiplinan, tanggung jawab, kerja tim, skill, akademik, dan komunikasi. Hasil akhir penelitian berupa nilai preferensi (Vi) setiap alternatif, dimana terdapat nilai preferensi tertinggi yaitu 1 yang diperoleh 3 dari 12 orang pegawai pada pengujian algoritma TOPSIS. Penyajian sistem informasi dilakukan dengan database yang ditampilkan menggunakan desain dashboard yang tepat digunakan untuk manajemen data. Pengujian EUCS pada website sistem informasi adalah 3.41 dari total nilai kepuasan (4) yang tergolong dalam kategori puas, sehingga dianggap layak dan diterima oleh user.   AbstractLaboratory employee is a education labor which help process learning college student within part of vocational and academic. In carrying out his work, laboratory employee sometimes it's still not optimal. So that the head of facilities & infrastructure and supervisor must control the employee to make sure employees are working well. For counter the problem in laboratory employee and help in performance management, made information system based on website which contain implementation of the TOPSIS algorithm on performance rating of the laboratory employee. There are six laboratory employee rating criteria which consisting of dicipline, responsible, team work, skill, academic, and communication. Last result of the research is the form of preference values (Vi) every alternatif, where there is highest preference value is 1 which is obtained 3 out of 12 employee of the TOPSIS algorithm testing. Presentment of the information system perform with database and displayed using dashboard design which exact used for present data management. EUCS testing on information system website is 3.41 from total satisfaction value (4) which classified of satisfied categori, so that good considered and accepting by user.
Implementasi Haversine Formula untuk Pembuatan SIG Jarak Terdekat ke RS Rujukan COVID-19 Chandra Husada; Kristoko Dwi Hartomo; Hanna Prillysca Chernovita
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 4 No 5 (2020): Oktober 2020
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v4i5.2255

Abstract

Haversine formula-based GIS has been created to find closest location to referral hospital handling COVID-19 in Semarang City. The objectives of this study were (1) to determine closest distance and compare the results with the calculation of Find Nearest Tool and Google Maps and (2) to design GIS. It was done through (i) primary and secondary data creation and processing, (ii) accuracy measurement using Haversine formula. GIS is built after the calculation results are obtained. Calculation of the distance from user’s starting point to referral hospital can be generated using Haversine formula. Comparison of measurement results between Haversine formula-based GIS and Find Nearest Tool, the average differences is 13 meters, the smallest difference is 3 meters and the largest difference is 40 meters. The differences between the calculation results of Haversine formula and Google Maps, the smallest difference is 0 meters, the largest difference is 5 meters, and the average differences is 3 meters. GIS creation obtained through designing use case, activity, class diagram, and user interface. The conclusion is Haversine formula-based GIS can be used as "Geographic Information System for the Search of Referral Hospital Handling COVID-19 in Semarang City" based on the closest distance from user's location.
Implementasi Metode Linear Addition untuk Perancangan Efek Mask Lightning Kristoko Dwi Hartomo
Teknoin Vol. 10 No. 2 (2005)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/.v10i2.687

Abstract

Digital picture development is picture processing using digital computer in order to get different  picture or another picture which suits with the needs.  One example of picture development is mask lighting effect with linear addition method.  The main principle of linear addition method is by adding intensity to every pixel colour by adding every pixel with a variable.  This paper focuses on the implementation of linear addition method to give lighting effect on picture. Keywords : mask lighting, linear addition, pixel.