Garuda - Garba Rujukan Digital

APLIKASI E-COMMERCE WWW.KOMPUTERONLINE.COM DENGAN MENGGUNAKAN MYSQL DAN PHP4 Setiabudi, Djoni Haryadi; Rahardjo, Alex Surya
Jurnal Informatika Vol 3, No 2 (2002): NOVEMBER 2002
Publisher : Institute of Research and Community Outreach - Petra Christian University

This research is about the development of the e-commerce www.komputeronline. com website using MySQL as the database server, Apache as the web server and PHP4 as the scripting programming language with Linux as the operating system of the server . This site can be used to do the transaction of the selling computers and its accesorries. The implementation is about shopping mall's facilities (shopping cart) for end users and catalog maintenance's facilities for the administrator. The facilities for the end users in the shopping mall are stuff list based on category and type, search, account status, and at the shopping cart part users can change the quantity, or even cancel the ordering. The facilities for the administrator in the catalog maintenance are search users, maintenance users, look at each user's transactions, look at today's transaction, and change the status of transaction from 'pending' to 'shipped'. The testing that has been done on the komputeronline.com database, with 17 users login at the same time, accessing shopping mall database facilities, shows that the database server and the PHP4 scripting program can run well without any problems. Abstract in Bahasa Indonesia : Pada penelitian ini dilakukan pembuatan website e-commerce www.komputeronline. com dengan menggunakan database server MySQL, pada web server Apache, dan perancangan scripting programming yang menggunakan bahasa scripting PHP4 yang berjalan di sistem operasi Linux. Website ini dipergunakan untuk melakukan transaksi penjualan komputer beserta aksesorisnya. Implementasi yang dilakukan pada komputeronline.com antara lain adalah fasilitas shopping mall (shopping cart) untuk end user, dan fasilitas pemeliharaan katalog untuk administrator. Fasilitas-fasilitas untuk end user yang diberikan pada shopping mall antara lain adalah daftar barang berdasarkan kategori dan type, search, account status, dan pada bagian shopping cart user dapat mengubah jumlah barang yang dibeli ataupun membatalkan pembeliannya. Fasilitas untuk admin pada maintenance katalog antara lain adalah search user, maintenance user, melihat transaksi masing-masing user, melihat transaksi hari ini, dan mengubah status suatu transaksi dari 'pending' menjadi 'shipped'. Dari hasil pengujian pada website komputeronline.com ini, dengan 17 orang user yang masuk secara kurang lebih bersamaan, mengakses fasilitas database shopping mall, database server dan scripting program PHP4, ternyata dapat menangani transaksi tanpa ada masalah. Kata kunci: e-commerce, MySQL, PHP, Apache, Linux, komputeronline.com, web.

PENGEMBANGAN EVALUASI PEMBELAJARAN BERBASIS MULTIMEDIA DENGAN FLASH, PHP, DAN MYSQL Sutopo, Hadi
Jurnal Informatika Vol 11, No 1 (2012): MAY 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

Computer-Based Testing (CBT) program was launched for years to give test takers the options of taking computerized version of test. The application which generates academic score is developed as a server-side with Adobe Flash. Flash is well known as a powerful and dynamic front-end for the Web. However, Flash is also great interface for server-side applications. PHP can launch server-side script using Flash as a front-end and pass variables back and forth between Flash and the PHP pages. Along with PHP, MySQL can be used to store data and later retrieve it. Using Flash as a front-end, data and variables are passed between the MySQL database, PHP, and Flash to enhance application's functionality in managing databases.

PEMBUATAN APLIKASI SISTEM PENDUKUNG KEPUTUSAN UNTUK PROSES KENAIKAN JABATAN DAN PERENCANAAN KARIR PADA PT. X Handojo, Andreas; H. Setiabudi, Djoni; Yunita, Rachma
Jurnal Informatika Vol 4, No 2 (2003): NOVEMBER 2003
Publisher : Institute of Research and Community Outreach - Petra Christian University

Fulfilling empty position on company often become complicated process because the candidate who can be placed in that position by matching between employee-profile and position-profile sometimes not well define. To minimize that problem, there should be a method such as decision support system which can analize employees who suitable with the available position. This decision support system for profile matching process and gap analization is made based on company's data and rules which locate on PT.X. Profile Matching process is taken to recommend employees in Positioning and Carrier Planning based on three stages, which are Intelectual Capacity, Working Area and Attitude. The result of this process is represented ini rank of employees as recommendation for decision maker in deciding which employee is suitable for the position.This Software is using Microsoft Access 2000 for database and Borland Delphi 5.0 as compiller. Form the result of this implementation system can be seen that this software can be very helpfull on decision support to profile matching in positioning and career planning on PT. X. Abstract in Bahasa Indonesia : Pengisian jabatan yang kosong pada proses kenaikan jabatan sering mengalami kesulitan karena pengajuan calon kandidat yang bisa menempati jabatan tersebut dengan cara pencocokan profil karyawan dan profil jabatan kurang terdefinisi dengan baik. Untuk meminimumkan kendala tersebut diperlukan suatu sistem pendukung keputusan yang dapat menganalisa beberapa karyawan yang sesuai dengan profil jabatan yang ada. Sistem pendukung keputusan untuk proses profile matching dan analisis gap ini dibuat berdasarkan data dan norma-norma SDM yang terdapat di PT. X. Proses Profile Matching dilakukan untuk menentukan rekomendasi karyawan dalam Sistem Kenaikan Jabatan dan Perencanaan Karir berdasar pada 3 aspek yaitu Kapasitas Intelektual, Sikap Kerja dan Perilaku. Hasil dari proses ini berupa ranking karyawan sebagai rekomendasi bagi pengambil keputusan untuk memilih karyawan yang cocok pada jabatan yang kosong tersebut. Software ini dibuat dengan menggunakan Microsoft Access 2000 untuk database dan Borland Delphi 5 sebagai compiller-nya. Dari hasil implementasi sistem, disimpulkan bahwa dengan penggunaan software ini dapat membantu proses pengambilan keputusan terhadap profile matching proses kenaikan jabatan dan perencanaan karir di PT. X. Kata kunci: Sistem Pendukung Keputusan, Profile Matching, Kenaikan Jabatan, Perencanaan Karir, Analisis Gap, Sistem Informasi

KAJIAN INVESTASI SISTEM INFORMASI BERDASARKAN DOMAIN BISNIS PADA UNIVERSITAS X Santoso, Leo Willyanto; Yulia, Yulia; Wirawan, Aldy
Jurnal Informatika Vol 12, No 1 (2014): MAY 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

Appropriate investment on information technology is needed to obtain the information technology systems that are reliable. University ' X ' has decided to do technology investments by developing academic information systems to support business processes. It is necessary to analyze the advantages and disadvantages of the systems and technology investments, and assess whether the investment has been supporting the organization's business processes . In addition, knowing the economic value of investments/ IT and ROI calculation is crucial . The purpose of the study is to analyze and assess the extent to which the success of information systems investments made ??by the company by using a business domain analysis method on Information Economics (IE). The method used was the literature research, surveys, interviews, questionnaires, documentation studies and methods of analysis. At the end of the study, it has successfully made ??the investment analysis of the University Academic Information Systems, a ROI calculation and IE Score as well as tools for storing project data and calculation results and ROI Score

PENGGUNAAN HIBRIDISASI GENETICS ALGORITHMS DAN FUZZY SETS UNTUK MEMPRODUKSI PAKET SOAL Intan, Rolly
Jurnal Informatika Vol 6, No 1 (2005): MAY 2005
Publisher : Institute of Research and Community Outreach - Petra Christian University

At least, two important factors, discrimination and difficulty, should be considered in determing whether a problem should be in a packet of problems produced for students entrance examination at a university. The higher the discrimination degree of a problem, the better the problem is used to make a selection of participants based on their intellectual capability. How to provide a packet of entrance examination problems satisfying a determined pattern of discrimination and difficulty is a major problem in this paper for which an algorithm, it can be proved that the beneficiary of applying fuzzy sets and fuzzy relation in determing the first chromosome in the process of GA is that the process can reach tolerable solutions faster. Maximum number of generation is still needed as a threshold to overcome the problem of run time system overflow. Generally, the problems in the form of passages tend to have lower fitnest cost. Abstract in Bahasa Indonesia : Proses penyusunan paket soal (misalnya soal untuk test seleksi masuk universitas) yang diambil dari suatu bank soal, minimal harus memperhatikan dua aspek penting yaitu: tingkat kesulitan dan tingkat diskriminan soal. Semakin tinggi tingkat diskriminan suatu soal, semakin baik soal tersebut dipakai untuk menyeleksi kemampuan peserta test. Permasalahan yang dihadapi adalah bagaimana agar pembuat soal dapat memilih dan menentukan kombinasi soal-soal yang tepat (optimum) sehingga dapat memenuhi tingkat kesulitan dan diskriminan yang dikehendaki. Untuk menyelesaikan masalah ini, diperkenalkan suatu algoritma yang disusun dengan menggunakan hibridisasi metode Genetics Algorithm dan fuzzy sets. Dari hasil pengujian, didapatkan bahwa penggunaan fuzzy sets dan fuzzy relations dalam pemilihan kromoson awal akan lebih mempercepat pencapaian tolerable solutions. Tetap dibutuhkan treshould maksimum jumlah generasi yang dilakukan untuk mencegah run time sistem overflow. Soal bacaan cenderung memiliki nilai Fitnest Cost yang lebih rendah daripada nilai Fitnest Cost untuk paket soal bukan soal bacaan. Kata kunci: genetics algorithm, fuzzy sets, hibridization method.

AUDIT AWAL SISTEM INFORMASI PADA PT. X BERDASARKAN STANDAR CONTROL OBJECTIVES FOR INFORMATION AND RELATED TECHNOLOGY (COBIT 4.1) Monica, Cindy; Santoso, Leo Willyanto; Yulia, Yulia
Jurnal Informatika Vol 13, No 2 (2015): NOVEMBER 2015
Publisher : Institute of Research and Community Outreach - Petra Christian University

PT. X is a company engaged in the field of iron and steel construction, located in Surabaya. Not easy for a large company with business processes that are also wide enough to carry out all processes in the company by way of the manual. This is because in the era of globalization, companies must be able to address the issues and changes that occur quickly and on target. Therefore, companies urgently need an integrated application. However, the factor that must be considered not only focuses on the acquisition of application systems needed by the company alone. But companies also need to focus on maintaining the quality of the application system. Because the application system useful to support and enhance the company's management in order to improve company performance and effectiveness in delivering services to the public. Therefore, the researcher wants to conduct the audit planning of application system for PT. X with analysis on the condition of IT at PT. X to determine the COBIT domains that need to be audited.

SIMULATING THE EFECT OF CAMERA LENS IN COMPUTER GENERATED PICTURE Hartanto, Budi; Rosalina, Silvia
Jurnal Informatika Vol 7, No 1 (2006): MAY 2006
Publisher : Institute of Research and Community Outreach - Petra Christian University

Original ray tracing method can be used to create picture of objects that are very similar to photographic. However for simplicity, the method mimics a pinhole camera in its model. In pinhole camera all objects visualized in the image generated will be seen sharp. In some cases, this kind of image is acceptable but in other cases it is not. For example, in the movie industry, sometimes it is preferable to get the image that can be focused to a certain object and not to all objects. This effect occurs due to the usage of a lens in a camera. In order to get the same effect to the real camera, then it is necessary to modify the original ray tracing method to use lens in its model. The research performed here has successfully simulating the effect of lens in camera. Therefore only objects that are placed in the lens focus will be seen sharp while the others will become blurry.

ADAPTIF NEUROFUZZY INFERENCE SYSTEM UNTUK PENGUKURAN PH Biyanto, Totok R.
Jurnal Informatika Vol 7, No 2 (2006): NOVEMBER 2006
Publisher : Institute of Research and Community Outreach - Petra Christian University

Due to increasing of measurement performance necessity and pH controlling on laboratory scale and industry, it needs to make measurement system that can give the best performance with the high accuracy and robust with the disturbance and noise. Sensor of pH measurement is combination electrode with voltage output. This is influenced by hydrogen ion and liquid temperature. It will lead error if there is temperature changing in the measured process. In order to solve this problem, it needs pH measurement device that can measure pH without disturbed by temperature changes. ANFIS (Adaptive Neuro Fuzzy Inference System) can be used for identifying the voltage due from hydrogen ion and temperature changes. So, the pH measurement would be robust to temperature changes. Based on this result study, precision and accuracy device are 1.91% and 0.45% in the pH range 2-10.6 and temperature range 10-80oC. This gives conclusion that ANFIS can decrease pH reading error because of temperature changes. Abstract in Bahasa Indonesia : Seiring dengan meningkatnya kebutuhan performansi pengukuran dan pengendalian pH baik dalam skala laboratorium maupun industri maka perlu dibuat sistem pengukuran yang mampu memberikan performansi yang baik dengan akurasi yang memadai dan tahan terhadap ganguan dan noise. Sensor yang digunakan pada pengukuran pH adalah elektroda kombinasi dengan output tegangan. Tegangan tersebut selain dipengruhi oleh kehadiran ion hidrogen juga sangat dipengaruhi oleh temperatur larutan, sehingga akan terjadi kesalahan yang berarti bila ada perubahan temperatur pada proses yang diukur. Untuk mengatasi hal tersebut maka perlu dibuat alat ukur pH yang mampu mengukur pH tanpa terpengaruh oleh perubahan temperatur. Salah satu caranya adalah dengan memanfaatkan ANFIS (Adaptif NeuroFuzzy Inference System) untuk mengindentifikasi tegangan yang dihasilkan oleh kehadiran ion hidrogen dan tegangan yang disebabkan oleh perubahan temperartur, sehingga hasil pengukuran dapat relatif stabil terhadap ganguan temperatur. Dari hasil pengujian diperoleh kepresisian alat hasil perancangan sebesar 1.91% dan keakurasian sebesar 0.45%, dengan range pengujian pH 2-10.6 dan pada range temperatur 10 - 80 oC. Sehingga pengukuran pH berbasis ANFIS mampu mengatasi kesalahan pembacaan pH akibat perubahan temperatur. Kata kunci: pengukuran pH, kompensasi temperatur, ANFIS.

APLIKASI PENCARI RUTE OPTIMUM PADA PETA GUNA MENINGKATKAN EFISIENSI WAKTU TEMPUH PENGGUNA JALAN DENGAN METODE A* DAN BEST FIRST SEARCH Adipranata, Rudy; Handojo, Andreas; Setiawan, Happy
Jurnal Informatika Vol 8, No 2 (2007): NOVEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

Nowadays, most people still use conventional map to search for optimum route to travel from one place to another. By using map, people can estimate optimum route by calculate the length of street. However manual pathfinding using a conventional map requires a great deal of precision and takes a lot of time to be accomplished. Therefore in this research, we develop an application to generate the most optimum route on a digital map. In this application we also consider about the factor of traffic, roads condition and the distance. The methods that are used for pathfinding are A* and Best First Search (BFS), that use heuristic function to 'direct' the search on a graph-represented map. The cost on map's graph is given using map color recognition, also we can input the cost for traffic and roads condition. Based on application's testing results for the comparison between A* and BFS method, it can be concluded that A* provides better and more optimized solution than BFS. The optimum level of a route depends on the availability of an accurate and complete data about the roads condition and the process of setting the nodes cost on a given map that represents the actual condition of the roads. Abstract in Bahasa Indonesia : Untuk menempuh perjalanan dari satu tempat ke tempat lain, peralatan yang paling sering digunakan adalah peta, dengan menggunakan peta, dapat diestimasikan rute yang optimum dengan menghitung panjang jalan yang akan ditempuh. Karena merupakan estimasi, maka dengan cara tersebut belum tentu rute yang dipilih merupakan rute yang optimal karena terdapat faktor lain seperti kemacetan atau kondisi jalan. Untuk itu pada penelitian ini dikembangkan aplikasi untuk penentuan rute yang optimum dengan menggunakan peta digital dimana pada aplikasi ini terdapat faktor kemacetan, kondisi jalan dan jarak tempuh. Untuk pencarian rute digunakan metode A* serta Best First Search yang menggunakan fungsi heuristic guna 'mengarahkan' pencarian pada peta yang direpresentasikan dalam konsep graph. Nilai node-node graph pada peta dapat diatur dengan fasilitas pengenalan warna pada peta. Dan dapat ditentukan pula bobot pada masing-masing node yang merupakan kemacetan atau kondisi jalan. Pada pengujian aplikasi ini, selain diuji untuk mencari rute optimum pada sebuah peta, juga dilakukan uji perbandingan antara metode A* dan Best First Seach. Dari hasil pengujian dapat disimpulkan bahwa metode A* memberikan hasil pencarian rute yang lebih pendek daripada BFS. Tingkat optimasi rute yang dihasilkan tergantung pada tersedianya data yang lengkap dan akurat tentang kondisi jalan serta proses pemberian bobot pada node peta yang mewakili kondisi jalan tersebut. Kata kunci: pencarian rute, peta digital, A*, Best First Search.

PERANCANGAN SISTEM PREDIKSI CHURN PELANGGAN PT. TELEKOMUNIKASI SELULER DENGAN MEMANFAATKAN PROSES DATA MINING Govindaraju, Rajesri; Simatupang, Tota; Samadhi, TMA. Ari
Jurnal Informatika Vol 9, No 1 (2008): MAY 2008
Publisher : Institute of Research and Community Outreach - Petra Christian University

The purpose of this research is to design a customer churn prediction system using data mining approach. This system is able to perform data integration, data cleaning, data transformation, sampling and data splitting, prediction model building, predicting customer churn, and show the results in certain agreed forms. Churn prediction variables were identified based on earlier research reports that include customer information, payment method, call pattern, complaint data, telecommunication services usage and change of telecommunication services usage behavior data. The preferred mining technique used is the classification with decision tree algorithm. The decision tree can present visual model which represents customer churn and non churn pattern behavior. This system was tested using Kartu Halo customer data in Bandung area and testing result showed 70,94% accuracy of the prediction model. Abstract in Bahasa Indonesia : Penelitian ini bertujuan merancang sistem prediksi churn pelanggan yang memanfaatkan proses data mining. Sistem yang dihasilkan dapat melakukan integrasi data, pembersihan data, transformasi data, sampling dan pemisahan data, konstruksi model prediksi, memprediksi churn pelanggan dan menampilkan hasil prediksi dalam format laporan tertentu yang diperlukan. Identifikasi variabel-variabel prediksi churn dilakukan berdasarkan model prediksi churn yang telah dikembangkan pada penelitian terdahulu yang antara lain mencakup informasi mengenai pelanggan, metode pembayaran, data percakapan, data penggunaan jenis-jenis layanan telekomunikasi dan data yang menggambarkan perubahan perilaku penggunaan layanan telekomunikasi tersebut. Teknik mining yang dipilih adalah teknik klasifikasi dengan algoritma decision tree. Decision tree menghasilkan model visual yang merepresentasikan pola perilaku pelanggan yang churn dan tidak churn. Uji coba sistem yang dilakukan menggunakan data pelanggan Kartu Halo daerah Bandung menghasilkan tingkat akurasi model prediksi sebesar 70,94%. Kata Kunci : customer relationship management (CRM), churn, data mining, decision tree, sistem prediksi churn.

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