Jurnal Informatika (p-ISSN 1411-0105 and e-ISSN 2528-5823) is published biannually, in May and November, by Petra Christian University. Jurnal Informatika aims to: 1. Promote a comprehensive approach to informatics engineering and management incorporating viewpoints of different applications (computer graphics, comp. networks, comp. vision, operating systems, Internet/Intranet developments, computational intelligent, databases, IT project management, etc.). 2. Strengthen academic exchange with other institutions in the area of informatics engineering and management. 3. Encourage scientist, practicing engineers, and others to conduct research and other similar activities.
Authors who publish with this journal agree to the following terms: Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
RANCANG BANGUN APLIKASI PREDIKSI PENJUALAN MENGGUNAKAN ALGORITMA DOUBLE EXPONENTIAL SMOOTHING BERBASIS WEB (STUDI KASUS: PT. SANPAK UNGGUL)
<!-- p { margin-bottom: 0.17in; direction: ltr; color: rgb(0, 0, 0); text-align: justify; }p.western { font-family: "Times New Roman", serif; font-size: 10pt; }p.cjk { font-family: "Times New Roman", serif; font-size: 10pt; }p.ctl { font-family: "Times New Roman", serif; font-size: 12pt; }a:visited { color: rgb(128, 0, 128); }a.western:visited { }a.cjk:visited { }a.ctl:visited { }a:link { color: rgb(0, 0, 255); } --> Penelitian ini bertujuan untuk melakukan peramalan penjualan di masa mendatang beserta fitur-fitur aplikasi lainnya seperti kemampuan untuk menambahkan (insert), mengubah (edit), dan menghapus (delete) data produk dan ringkasan penjualan yang akan atau telah disimpan dalam suatu database untuk studi kasus perusahaan tertentu. Aplikasi yang dibangun menggunakan algoritma double exponential smoothing. Alasan pemanfaatan algoritma ini adalah nilai smoothing akan diperoleh tepat waktu sebelum data aktual saat data historis memiliki komponen trend. Oleh karena itu, untuk nilai smoothing tunggal, perlu ditambahkan nilai dari double smoothing untuk menyesuaikan trend tersebut. Metode yang dapat digunakan untuk memprediksi trend linear adalah metode dua parameter Holt. Pada metode Holt, nilainya bukan trend halus dari double smoothing secara langsung, melainkan penghalusan trend dilakukan dengan menggunakan parameter yang berbeda dengan yang digunakan untuk menghaluskan data aslinya. Hasil penelitian menunjukkan bahwa aplikasi yang dibangun memiliki persentase kesalahan sekitar 28,38%. Aplikasi yang dibangun juga mampu memenuhi fitur-fitur yang dikehendaki oleh user dalam pemrosesan produk dan rekapitulasi.
DIGITAL LOYALTY FOR SOCIAL MEDIA, A CASE STUDY ON BOXPLOSIVE B.V.
<!-- p { margin-bottom: 0.17in; direction: ltr; color: rgb(0, 0, 0); text-align: justify; }p.western { font-family: "Times New Roman", serif; font-size: 10pt; }p.cjk { font-family: "Times New Roman", serif; font-size: 10pt; }p.ctl { font-family: "Times New Roman", serif; font-size: 12pt; }a:visited { color: rgb(128, 0, 128); }a.western:visited { }a.cjk:visited { }a.ctl:visited { }a:link { color: rgb(0, 0, 255); } --> Digital loyalty is the process of providing incentives to customers through digital media to increase customer loyalty. Nowadays, Boxplosive B.V. using app to distribute deal and saver cards from retailers like AH to go and Etos to their customer. But the problem is that not all the customers are willing to download the app. To overcome this problem, this research investigate how social media app can be used for distributing deal and saver card. Therefore, a prototype program will be built for the implementation to show that social media app can be used for business purposes. The result shows that now the customer do not need to download the separate apps to get the deas and saver card.
MIGRATING AUTOLUX WEBSITE FROM MODX TO PHALCONPHP WITH FURTHER DEVELOPMENTS (Search Engine Optimization and Mobile Application Support Implementation)
<!-- p { margin-bottom: 0.17in; direction: ltr; color: rgb(0, 0, 0); text-align: justify; }p.western { font-family: "Times New Roman", serif; font-size: 10pt; }p.cjk { font-family: "Times New Roman", serif; font-size: 10pt; }p.ctl { font-family: "Times New Roman", serif; font-size: 12pt; }a:visited { color: rgb(128, 0, 128); }a.western:visited { }a.cjk:visited { }a.ctl:visited { }a:link { color: rgb(0, 0, 255); } --> Autolux Project is owned by DTT Multimedia B.V. Autolux is a platform for car lovers sharing their information about favorite or latest cars. The website was built in MODx (CMS framework) which considered being old and heavy by the company. With that very reason, a project to migrate the website from MODx into PhalconPHP (pure PHP framework) was started. Migrating website from MODx to PhalconPHP was a success, and to boost the website popularity, the first thing to do is to implement the SEO standards. Another demand by the company was for the website to be responsive and using OOP standarts. Responsive website can be reached by using the help of libraries. PhalconPHP already implemented OOP, thus the developer will follow the MVC pattern given and refine it by doing more separation of concerns. Later on, the developer also put more refinements on the website to boost the speed of page loading, support multilingual, and management system.
THE ROLE OF SAP BUSINESS OBJECT TO SUPPORT A BUSINESS INTELLIGENCE PERFORMANCE
<!-- p { margin-bottom: 0.17in; direction: ltr; color: rgb(0, 0, 0); text-align: justify; }p.western { font-family: "Times New Roman", serif; font-size: 10pt; }p.cjk { font-family: "Times New Roman", serif; font-size: 10pt; }p.ctl { font-family: "Times New Roman", serif; font-size: 12pt; }a:visited { color: rgb(128, 0, 128); }a.western:visited { }a.cjk:visited { }a.ctl:visited { }a:link { color: rgb(0, 0, 255); } --> As the world of information and communication technology grows, it is becoming increasingly important for the role of technology as the primary information processor in every line of human life today. It can be concluded that the current role of technology has evolved into needs, not just corporate or academic interests. This creates the birth of a new economy marked by the high penetration of the use of IT (Information Technology) in the business transaction process, so the concept evolves into a smart business, thus improving business performance. So the concept of SAP Business Object to be applied this can help improve the company's performance to continue to innovate on an ongoing basis.
INTRODUCTION OF INTERNET OF THING TECHNOLOGY BASED ON PROTOTYPE
<!-- p { margin-bottom: 0.17in; direction: ltr; color: rgb(0, 0, 0); text-align: justify; }p.western { font-family: "Times New Roman", serif; font-size: 10pt; }p.cjk { font-family: "Times New Roman", serif; font-size: 10pt; }p.ctl { font-family: "Times New Roman", serif; font-size: 12pt; }a:visited { color: rgb(128, 0, 128); }a.western:visited { }a.cjk:visited { }a.ctl:visited { }a:link { color: rgb(0, 0, 255); } --> Internet of thing has been able to attract people compete to create various devices. Devices developed have various benefits, but the point is to make life easier. So many vendors create products related to the internet of things, so the user gets confused to determine which is good and appropriate for the needs. To simplify the user in choosing IoT product, this research will discuss about technology that is widely used in IoT, the advantages of each technology, in terms of security, operating system, microcontroller, IoT platform, tools and communication technology. This research makes prototype with one of existing technology. The results of this research provide knowledge, skills and experience in the field of IoT as well as information related to IoT technology, which is widely in the market. Furthermore, the prototype also has the expected functionalities, but it does not close the opportunity for further improvements. The results of this research provide knowledge, skills and experience in the field of IoT as well as information related to IoT technology, which is widely in the market. Furthermore, the prototype also has the expected functionalities, but it does not close the opportunity for further improvements.
IMPLEMENTASI ALGORITMA NAÏVE BAYES MENGGUNAKAN ISEAR UNTUK KLASIFIKASI EMOSI LIRIK LAGU BERBAHASA INGGRIS
<!-- p { margin-bottom: 0.17in; direction: ltr; color: rgb(0, 0, 0); text-align: justify; }p.western { font-family: "Times New Roman", serif; font-size: 10pt; }p.cjk { font-family: "Times New Roman", serif; font-size: 10pt; }p.ctl { font-family: "Times New Roman", serif; font-size: 12pt; }em.ctl { font-family: "Times New Roman", serif; font-style: normal; }a:visited { color: rgb(128, 0, 128); }a.western:visited { }a.cjk:visited { }a.ctl:visited { }a:link { color: rgb(0, 0, 255); } --> Lirik lagu merupakan suatu ungkapan perasaan seseorang terhadap sesuatu hal yang sudah dilihat, didengar maupun dialaminya sehingga tidak jarang emosi menjadi salah satu kriteria user dalam melakukan pencarian. Pencarian lirik melekat pada kategori yang tidak hanya terbatas berdasarkan genre atau judul lagu, namun juga melalui emosi dari lirik lagu yang diungkapkan. Agar dapat mencapai tujuan tersebut, diperlukan suatu sistem pengkategori yang mengenali lirik lagu secara otomatis dengan salah satu metode klasifikasi yaitu Naïve Bayes. Faktor yang mendorong tingginya tingkat akurasi bukan hanya terletak pada metode klasifikasi saja, namun proses sebelum menuju tahap klasifikasi juga berpengaruh pada hasil yang didapatkan. Maka dari itu, penulis melakukan penelitian melalui beberapa tahap yaitu preprocessing berupa tokenisasi, stopword dan stemming, kemudian feature selection yang digunakan adalah TF-IDF dengan bantuan ISEAR karena mengandung 7 emosi dasar. Dari ketujuh emosi dasar tersebut, tiga diantaranya merupkan emosi yang akan digunakan dalam penelitian ini yaitu anger, sadness dan joy. Hasil dari penelitian ini menunjukkan dengan menggunakan ISEAR akurasi tertinggi terdapat pada feature set 60% dan 100% yaitu sebesar 82,2%. Perbedaan signifikan dihasilkan pada penggunaan ISEAR dengan akurasi rata-rata keseluruhan porsi featureset sebesar 77% sedangkan tanpa menggunakan ISEAR rata-rata akurasi sebesar 53%. Dokumen paling relevan untuk pengujian menggunakan ISEAR terdapat pada kategori angry dengan rata-rata f-measure sebesar 0.7267.
APLIKASI CERDAS CERMAT ONLINE REALTIME UNTUK SEKOLAH DASAR
<!-- p { margin-bottom: 0.17in; direction: ltr; color: rgb(0, 0, 0); text-align: justify; }p.western { font-family: "Times New Roman", serif; font-size: 10pt; }p.cjk { font-family: "Times New Roman", serif; font-size: 10pt; }p.ctl { font-family: "Times New Roman", serif; font-size: 12pt; }a:visited { color: rgb(128, 0, 128); }a.western:visited { }a.cjk:visited { }a.ctl:visited { }a:link { color: rgb(0, 0, 255); } --> Berbagai macam aplikasi open source menjadi peluang untuk dapat menciptakan aplikasi permainan yang bernilai positif bagi perkembangan kecerdasan anak Sekolah Dasar (SD) dan dapat digunakan untuk berkompetisi dan berprestasi dalam hal wawasan ilmu pengetahuan. Kegiatan cerdas cermat pendidikan dasar khususnya pada tingkat SD menjadi objek potensial dalam pemanfaatan teknologi berbasis open source. Aplikasi cerdas cermat online realtime untuk Sekolah Dasar merupakan salah satu perangkat teknologi untuk bermain, berkompetisi, dan berprestasi, sebagai sarana meningkatkan ilmu pengetahuan siswa di tingkat pendidikan dasar. Aplikasi berbasis web ini dibangun dengan menggunakan metode prototipe. Hasil penelitian ini adalah 1) Requirement aplikasi untuk permainan cerdas cermat online ini berdasarkan tiga requirement, yaitu teknik menjawab pertanyaan secara realtime, leveling, dan banyak pengguna; 2) Aplikasi cerdas cermat online realtime ini diimplementasikan di dalam fungsi pertanyaan babak rebutan; 3) Perilaku kompetisi yang diterapkan dalam aplikasi cerdas cermat online realtime dapat digunakan untuk meningkatkan motivasi belajar, pengetahuan dan kompetisi siswa SD dalam ruang lingkup yang lebih luas. Aplikasi yang telah dibangun dapat dikembangkan lagi dengan menambahkan fitur leveling yang sudah ada dengan semua tingkatan kelas di sekolah dasar dan progress peningkatan kemampuan pengetahuan pengguna. Monitoring ini dapat digunakan sebagai nilai tambah dan penghargaan (reward) bagi sekolah maupun masyarakat kepada para siswa yang berkompetisi di dalamnya, dan sebagai dasar pengembangan bahan ajar guru.
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI ADOPSI APLIKASI UBER SEBAGAI PENYEDIA JASA TRANSPORTASI DI SURABAYA
<!-- p { margin-bottom: 0.17in; direction: ltr; color: rgb(0, 0, 0); text-align: justify; }p.western { font-family: "Times New Roman", serif; font-size: 10pt; }p.cjk { font-family: "Times New Roman", serif; font-size: 10pt; }p.ctl { font-family: "Times New Roman", serif; font-size: 12pt; }a:visited { color: rgb(128, 0, 128); }a.western:visited { }a.cjk:visited { }a.ctl:visited { }a:link { color: rgb(0, 0, 255); } --> Seiring berjalannya waktu, Teknologi Informasi dan Komunikasi (TIK) di dunia ini semakin berkembang dengan pesat. Permintaan masyarakat akan kebutuhan jasa transportasi semakin tinggi. Kemajuan internet dan canggihnya telepon genggam semakin lama semakin canggih, yang membuat lebih nyaman dan efisiensi untuk memanjakan masyarakat. Dari fenomena tersebut lahirlah Uber. Penelitian ini menggunakan teori Technology Acceptance Model (TAM) dengan populasi user Uber Kota Surabaya. Penelitian ini bertujuan untuk mengetahui faktor-faktor yang mempengaruhi adopsi aplikasi Uber sebagai penyedia jasa Transportasi di Surabaya. Hasil yang diperoleh setelah di analisis oleh peneliti adalah kepercayaan pengguna dalam mengadopsi aplikasi Uber yang sangat berpengaruh signifikan terhadap keinginan seseorang untuk menggunakan aplikasi Uber.
AUDIT AWAL SISTEM INFORMASI PADA PT. X BERDASARKAN STANDAR CONTROL OBJECTIVES FOR INFORMATION AND RELATED TECHNOLOGY (COBIT 4.1)
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.
IOS APPLICATION FOR FINDING HALAL FOOD, MOSQUE, QIBLA DIRECTION AND PRAYER TIME
Muslim sometimes has trouble when they travel to a new place for find where the location of the halal food and mosque near their location is. Other things that Muslim will have difficulty when they travel in to a new place are find the Qibla direction, pray time in local time and the mosque location near their location. From that problem MLH (Muslim Little Helper) want to help them to solve their problem. The process is carried out as follows: The app get the user location, send the location to the YELP API server and muslimshalat.com API to get the location of halal food, and mosque (using YELP) and for find the direction of Qibla and the prayer schedule (by using muslimshalat.com API). After the system get the data, then it will show on the Map (using apple map inside the app) and put the data as marker. For the Qibla direction and prayer time, it will show in arrow image and listview. This app will be use Swift for the development language. The test result shows that the YELP API can be use only in USA, and internet play as the main rule in this app, because to create connection to the server to pull the data, the system need internet to pass all the data to server.
THE CPA QUALIFICATION METHOD BASED ON THE GAUSSIAN CURVE FITTING
The Correlation Power Analysis (CPA) attack is an attack on cryptographic devices, especially smart cards. The results of the attack are correlation traces. Based on the correlation traces, an evaluation is done to observe whether significant peaks appear in the traces or not. The evaluation is done manually, by experts. If significant peaks appear then the smart card is not considered secure since it is assumed that the secret key is revealed. We develop a method that objectively detects peaks and decides which peak is significant. We conclude that using the Gaussian curve fitting method, the subjective qualification of the peak significance can be objectified. Thus, better decisions can be taken by security experts. We also conclude that the Gaussian curve fitting method is able to show the influence of peak sizes, especially the width and height, to a significance of a particular peak.
LOAD BALANCING DINAMIS MENGGUNAKAN ALGORITMA DYNAMIC DISTRIBUTION UPON DEMAND PADA SISTEM ENKRIPSI/DEKRIPSI DATA TERDISTRIBUSI
The diversity of capability of computers worker in distributed system influences resource allocation and completion time for each jobs on the system. This study aims to implement a dynamic load balancing technique using dynamic distribution upon demand (DDD) algorithm to optimize the resource allocation in distributed data encryption/decryption system. Evaluating was performed by comparing the proposed system with two other models that is a system without load balancing and with static load balancing method. Evaluation result showed that the resource allocation in the proposed system using DDD algorithm more optimized and at the decryption process of three and four characters with proper workload initialization values presented that the job completion time much faster than the two other systems.
PENGUKURAN TINGKAT MOTILITAS SPERMA BERDASARKAN LINEARITAS SPERMA MENGGUNAKAN METODE ADAPTIVE LOCAL THRESHOLD DAN ELLIPSE DETECTION
Technology that can be used toassist sperm examination is Computer-Aided Sperm Analysis (CASA). The problems with this technology are expensive and the methods are not open for public. A lot of researches have been done to have an altenative CASA’s method to examine sperm quality accurately, inexpensively, and fast. This research is focused on measuring the level of sperm motility. Visual observations of sperm motility greatly depend on each andrologists which are subjective and also the possibility of repetition for the examined sample does not exist. Moreover, visual observation cannot provide precise values for parameters that affect the sperm motion patterns which are Velocity Straight Line, Velocity Curvilinear Line, and Linearity. Focus of this research is to create an application using sperm detection method, Local Adaptive Threshold and Ellipse Detection to measure sperm linearity to determine the level of sperm motility based on the WHO standard. Experiment produces result with the smallest difference 5.7333% and the biggest difference 10.4667% compared to the result of visual analysis by andrologist.
REKAYASA PERANGKAT LUNAK DETEKSI DINI KECENDERUNGAN GANGGUAN KESEHATAN MASYARAKAT TERTINGGAL DAN PESISIR DENGAN BAYESIAN NETWORK
This study was conducted to see the trend of diseases caused by unhealthy lifestyles on disadvantaged communities and coastal villages around Gresik and Tuban using hybrid algorithms through the construction of the structure of Bayesian Network. The problem to be solved in this study is no system that can detect a relationship between unhealthy behavior that caused the disease. Model of this structure has never been applied directly in the field to detect a causal events for example, if a behavior is unhealthy will arise disease. Application of this model needs to be done with a field study to determine and prove the actual benefits of the concept of a hybrid construction of Bayesian network structure. The purpose of this research is to produce a software model capable of early detection of disease risk propensity underdeveloped rural and coastal communities who have unhealthy lifestyles in the form of construction of the structure and generates a probability value with a tendency disease. The comparison between the structure of the origin of the structure of the trial results indicate the level of suitability for complete test data difference of 10% to the original structure, and suitability for the test data is incomplete for more than 20% depending on the amount of his missing value. The validity of that smoke will have the tendency has tuberculosis disease, bronchitis or Lung Cancer through the test system is 80% to 90%.
PEMBUATAN APLIKASI AUDIENCE RESPONSE SYSTEM BERBASIS WEB DAN ANDROID
Audience Response Systems are widely used in various events as a media to gather information, to collect data, and to know the opinions of the general public towards particular issues, topics, news. Audience Response System can also be used to find out the client or customer satisfaction to the quality of products or services. Unfortunately most of the audience response systems that exist today are in the form of a physical (or remote) device which is severely limited in use. Along with the development of technology, almost all people have a smartphone to support their daily activities. The physical remote device called a clicker can be replaced with an application or program that can be installed on smartphones, while the polls are created through the website. In this research, the Audience response system was built using Node.js, PhoneGap platform, and the WebSocket Socket.IO as Javascript library to support bi-directional data communications. Based on testing result, this application can run properly all the functionalities that have been mentioned such as login to the system, create a poll, join a poll, and give a vote. The realiability of the system is 93%..
PEMAHAMAN TEORI DATA WAREHOUSE BAGI MAHASISWA TAHUN AWAL JENJANG STRATA SATU BIDANG ILMU KOMPUTER
As a Computer scientist, a computer science students should have understanding about database theory as a concept of data maintenance. Database will be needed in every single human real life computer implementation such as information systems, information technology, internet, games, artificial intelligence, robot and so on. Inevitably, the right data handling and managament will produce excellent technology implementation. Data warehouse as one of the specialization subject which is offered in computer science study program final semester, provide challenge for computer science students.A survey was conducted on 18 students of early year of computer science study program at Surya university and giving hypothesis that for those students who ever heard of a data warehouse would be interested to learn data warehouse and on other hand, students who had never heard of the data warehouse will not be interested to learn data warehouse. Therefore, it is important that delivery of the Data warehouse subject material should be understood by lecturers, so that students can well understoodwith the data warehouse.
APLIKASI SURABAYA HERITAGE BERBASIS WEBSITE
Utilization of communication and computer technology has spread into various fields. Begin from the world of entertainment, education, business, health, life-style, and also the tourist field. Nowadays, still lack of the information related to the city of Surabaya as historical information, information about tourist sites, and others. This research conduct to develop an application to explore the history of the city of Surabaya as historic sites, tourist sites, museums, and the event agenda in town. With this application, the user is expected to be able to learn about the history of the city of Surabaya in the interesting form by combining text, picture, sound, and Google map facilities, as well as well as the promotion of tourism and events agenda are hosted in the city of Surabaya. Surabaya Heritage Applications created on a web-based application that is intended for public to know better about the history, tourism objects, as well as the event agenda in the city of Surabaya. Based from the testing results, the application was able to perform functions such as pre-planned. Meanwhile, testing by sampling questionnaires to the user produce that the application is attracting interest from users by 85%. It can be concluded that the applications made quite meet the target research.
KEAMANAN CITRA DENGAN WATERMARKING MENGGUNAKAN PENGEMBANGAN ALGORITMA LEAST SIGNIFICANT BIT
Image security is a process to save digital. One method of securing image digital is watermarking using Least Significant Bit algorithm. Main concept of image security using LSB algorithm is to replace bit value of image at specific location so that created pattern. The pattern result of replacing the bit value of image is called by watermark. Giving watermark at image digital using LSB algorithm has simple concept so that the information which is embedded will lost easily when attacked such as noise attack or compression. So need modification like development of LSB algorithm. This is done to decrease distortion of watermark information against those attacks. In this research is divided by 6 process which are color extraction of cover image, busy area search, watermark embed, count the accuracy of watermark embed, watermark extraction, and count the accuracy of watermark extraction. Color extraction of cover image is process to get blue color component from cover image. Watermark information will embed at busy area by search the area which has the greatest number of unsure from cover image. Then watermark image is embedded into cover image so that produce watermarked image using some development of LSB algorithm and search the accuracy by count the Peak Signal to Noise Ratio value. Before the watermarked image is extracted, need to test by giving noise and doing compression into jpg format. The accuracy of extraction result is searched by count the Bit Error Rate value.
SEGMENTASI OBYEK PADA CITRA DIGITAL MENGGUNAKAN METODE OTSU THRESHOLDING
Digital image has size and object in the form of foreground and background. To separate it, it is necessary to be conducted the image segmentation process. Otsu thresholding method is one of image segmentation method. In this research is divided into five processes, which are input image, pre-processing, segmentation, cleaning, and accuracy calculation. First process was input color images which consists of multiple objects. Second process was conversion from color image to grayscale image. Third process was automatically calculated threshold value using Otsu thresholding method, followed by binary image transformation. The fourth process, the result of third process is changed into negative image as the segmentation results, noise removal with a threshold value of 150, and morphology. The last accuracy calculation is conducted to measure proposed segmentation method performance. The experimental result have been compared to the image of Ground Truth as the direct user observation to calculate accuracy. To examine the proposed method, Weizmann Segmentation Database is used as data set. It conconsist of 30 color images. The experimental results show that 93.33% accuracy were achieved.
SISTEM PENILAIAN ESAI OTOMATIS PADA E-LEARNING DENGAN ALGORITMA WINNOWING
Exam essay is an evaluation of learning in the form of essay questions that have answers more variable than multiple choice questions. Variations of these answers provide its own difficulties for teachers in assessing response. Essay grading system is built to be one solution that can speed up and simplify the process of grading. Essay grading system in this study was done by measuring the similarity of responses of the students and teacher answer key. This research use winnowing algorithm. Winnowing algorithm is an algorithm for text similarity measure. Winnowing algorithm produces fingerprint of text that will represent the answer to the calculation of similarity with jaccard coeficient equation. Testing was conducted to determine the ability of the algorithm winnowing to provide an essay grading using n-gram and window value changes of the winnowing algorithm. The test results showed the use of the value of n-grams and window on the method of winnowing effect on fingerprint similarities were found. The more similarities fingerprint found, the value of the resulting system also be higher. The accuracy of the grading system showed better results on text answers that have the answer sentence structure same with key answer.
PERBANDINGAN APLIKASI MENGGUNAKAN METODE CAMELLIA 128 BIT KEY DAN 256 BIT KEY
The rapid development of the Internet today to easily exchange data. This leads to high levels of risk in the data piracy. One of the ways to secure data is using cryptography camellia. Camellia is known as a method that has the encryption and decryption time is fast. Camellia method has three kinds of scale key is 128 bit, 192 bit, and 256 bit.This application is created using the C++ programming language and using visual studio 2010 GUI. This research compare the smallest and largest key size used on the file extension .Txt, .Doc, .Docx, .Jpg, .Mp4, .Mkv and .Flv. This application is made to comparing time and level of security in the use of 128-bit key and 256 bits. The comparison is done by comparing the results of the security value of avalanche effect 128 bit key and 256 bit key.
SISTEM DETEKSI WAJAH PADA OPEN SOURCE PHYSICAL COMPUTING
Face detection is one of the interesting research area. Majority of this research implemented on a computer. Development of face detection on a computer requires a significant investment costs. In addition to having to spend the cost of procurement of computers, is also required for operational cost such as electricity use, because the computer requires large power/watt.This research is proposed to build a face detection system using Arduino. The system will be autonomous, in other word the role of computer will be replaced by Arduino. Arduino is used is Arduino Mega 2560 with specifications microcontroller AT MEGA 2560, a speed of 16 MHz, 256 KB flash memory, 8 KB SRAM, 4 KB EEPROM. So not all face detection algorithm can be implemented on the Arduino. The limitations of memory owned by the arduino will be resolved by applying the method of template matching using the facial features in the form of a template that is shaped like a mask. Detection rate achieved in this study is 80% - 100%. Where, in the Arduino's success in identifying the face are influenced by the distance between the camera with the human face and human movement.
PREDIKSI CUACA MENGGUNAKAN METODE CASE BASED REASONING DAN ADAPTIVE NEURO FUZZY INFERENCE SYSTEM
Weather is one of the nature elements that can influence decision making in human's life. Based on that issue, the author wants to make an application that is able to predict weather with good accuracy. The application is a weather forecasting system, using computer technology that implements expert system. The methods used are Adaptive Neuro Fuzzy Inference System (ANFIS) and Case Based Reasoning (CBR), and a combination of both methods will applied to the system. The system also has learning methods like Backpropagation Error (BPE) and Recursive Least Error (RLSE), to increase its accuracy. Clustering and data cleaning also done inside the system, as it needed by forecasting process to achieve a good result. K-Means is the clustering algorithm, while Box and Whisker Plot is the algorithm for data cleaning. The result from this project is to create a weather forecasting system with high accuracy.
Company X is a reputable company that has more than 1000 people employees. One of the routines that performed by company X is orientation for new employees, and there is an event that invites them to visit the factory. The location of the main office and the factory is far, so this activity lacks time efficiency. This application aims to facilitate company X in conducting new employee orientation so that the location can be seen in the virtual world. The first thing in the process of making the application is visiting the factory to determine the shape and position of the object, so that the expected results are shown to resemble its original condition. 3d object and its texture are created using Blender application that can be imported into the made application. Collision feature aims to prevent users from penetrating the objects.The position, shape and location of objects contained in the application already resemble the original plant site. The main obstacle in making this application is the creation time, so the detailed map of the plant cannot be completed. The main building, the production building and the warehouse have been made, only small objects contained in the main building have not been contained.
INTERPRETASI E-LEARNING SEBAGAI SUPPORT MEDIA UNTUK PEMBELAJARAN BAHASA MANDARIN BAGI SISWA SEKOLAH DASAR
Nowadays, many schools are teaching the Chinese Language as curriculum, including elementary school. While the major problems in Chinese language learning is a form of pronunciation or intonation that much different from the Indonesia language who does not pay attention to the tone. In the Chinese language curriculum students are expected to be able to listen, to pronounce, to read and to write. Furthermore, learning arithmetic subject in Chinese language is quite difficult, because besides being able to pronounce the numbers correctly, the student should be able to count it. Hence the limitations of print media is not able to accommodate learning in listening, especially pronunciation or intonation correctly and also the writing. This led to the emergence of the spatian contiguity between text books with information on what is perceived by the learner. This study attempts to bridge these limitations by accommodating a media in web-based learning that also train the ability to listen and write, so that the spatial distance between the information in the book with a learner can be reduced . The results of this study are expected to provide a new alternative as a model for Chinese language learning, especially in Indonesia.
IDENTIFIKASI FAKTOR PREDIKSI DIAGNOSIS TINGKAT KEGANASAN KANKER PAYUDARA METODE STEPWISE BINARY LOGISTIC REGRESSION
The World Health Organization (WHO) reported that deaths caused by cancer in the world these last four years has increased significantly. The data also reflected in the increase in breast cancer cases. In Indonesia, two cases also the highest cases of adult female deaths. Based on Hospital Information System, the number of breast cancer patients either inpatient or outpatient care amounted to 28.7%. This fact revealed more than 40% of all cancers can be prevented with early detection cancer. Role of Information Technology can implemented by data mining techniques to shorten the diagnosing time, accuracy and selection of factors early detection of breast cancer. Stepwise binary logistic regression method has the advantage to add and subtract the independent variables in accordance with level of significance of the model. Based on the analysis of weighting method, the highest four variables that should be more aware is the area of cancer (area), fineness (smoothness), the number of dots (concave points) or the nucleus of cancer and grayish level of cancer (texture). So the accuracy and processing speed of diagnosis of the severity of breast cancer can be improved through this method.
DATA MODEL CUSTOMIZATION FOR YII BASED ERP APPLICATION
As UD. Logam Utama’s business grow, trigger the need of fast and accurate information in order to improve performance, efficiency, control and company’s values. The company needs a system that can integrate each functional area. ERP has centralized database and able to be configured, according to company’s business processes.First phase of application development is analysis and design the company’s business processes. The design phase produce a number of models that will be used to created application.The final result of application development is an ERP application that can be configured with the company’s business process. The ERP application consist of warehouse or production module, purchasing module, sales module, and accounting module.
SKIN SEGMENTATION AND SKULL SEGMENTATION FOR MEDICAL IMAGING
In this paper aims we present tools for medical imaging applications to do skin and skull segmentation in a short time. The desired output for skin segmentation is a 3D visualization of the facial skin without any cavities or holes inside the head, while skull segmentation aims to create a 3D visualization of the skull bones. The algorithm used for skin segmentation is thresholding the image, extracting the largest connected component, and holefilling to fill the unnecessary holes. As for the skull segmentation, the process is done by removing the spines which is connected to the skull, and then extracting the largest connected component. Afterwards, mesh generation is done to produce the 3D objects from the processed images. This mesh generation process is done using the marching cubes algorithm. The testing results show that the skin and skull segmentation process will work well when there are no other objects that are connected to the skin or the skull. Skin segmentation process takes a significant amount of time, primarily caused by the holefilling process.
SETTING UP AN INDUSTRIAL CONTROL SYSTEMS LABORATORY
With the evolution of Industrial Control Systems, many solutions from vendors are offered for industries. But sadly, most of those solutions are close-sourced, delivering lack of support for third parties who aim to develop Industrial Control Systems further. A start-up company named SecurityMatters needs an industrial instrument to simulate industrial environment to have a better idea how a particular protocol works. The application made in this project was developed using Java programming language to have compatibilities across platforms. An Object-Oriented-Programming and Model-View-Controller pattern are used as well to ensure maintainability. This application can be used to demonstrate capabilities of Modbus protocol and test industrial devices for vulnerabilities.
KAJIAN INVESTASI SISTEM INFORMASI BERDASARKAN DOMAIN BISNIS PADA UNIVERSITAS X
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
KLASTERISASI DAN ANALISIS TRAFIK INTERNET MENGGUNAKAN FUZZY C MEAN DENGAN EKSTRAKSI FITUR DATA
Internet facilities is one important part of the infrastructure of the campus at this time. Internet facility is a part of teaching and learning activities. Important part of the internet facility is the internet bandwidth, which is often deemed less bandwidth for certain majors at certain hours of lecture hours especially active. To overcome this there needs to be an analysis and clustering of the internet traffic at each point where the distribution of bandwidth is done so that in the end can provide information that can support decision granting bandwidth at each point there. One algorithm for clustering algorithms used are Fuzzy C-Mean, in which the clustering process before the beginning of the internet bandwidth usage data that exists in one period will be collected to be input to the Fuzzy C-Mean algorithm for the distribution of clusters on the use of existing bandwidth based applications that use the internet and network users. But the initial dataset that of the Fuzzy C Mean is not optimal, so we need some optimization dataset using feature extraction data so that the resulting clusters by Fuzzy C Mean algorithm has the accurate output. Results to be obtained from this study is the extraction of feature data that is most appropriate to perform clustering and analysis of Internet traffic based on user applications and the amount of capacity used by the user, which information the clustering results can be used to optimize internet bandwidth
PEMANFAATAN KURVA B-SPLINES UNTUK MEMPERHALUS VISUALISASI OBYEK MESH
Ray tracing is one of the photorealistic rendering method. Ray tracing process takes a long time because of the calculation of lighting effects and optical effects caused by the material of the object. The length of rendering time increases with the increasing complexity of the shape of the object, such as a mesh object. To minimize processing time, generally done by reducing the complexity of the mesh, which reduces the number of face that forms a mesh object. How to reduce the number of face is to combine adjacent face to face. The downside of this method is that the object surface resulting display will look grainy/triangular - facet (checkered). The proposed method in this study aims to refine the visualization of objects that complexity is not high. Triangular surface mesh - terms appear due to the calculation of the same color for each face that form a mesh. If the face has a color gradation, the mesh will look smooth surface. To produce a color gradation on a broad face, normal calculation was used, ie in proportion adopting b - splines curve calculations. Testing is done by comparing the results of the use of normal B - splines to the simple method of subdivision (a method of face vast divide into several smaller face , so that the finer the mesh surface) with ray tracing rendering method. From the experimental results, it can be concluded that the results of ray tracing using b - splines normal when compared with the subdivision, the results are not too different. From the aspect of long rendering process, the more the number of face of a mesh, it also increase the effectiveness of rendering time process. However, the increase is not proportional to the increase in the number of mesh
RANCANG BANGUN SALES FORCE AUTOMATION BERBASIS ANDROID DI PT. X
The existing system of PT. X used to insert sales data manually. While in field, Sales Force noted of the order from dealer/customer manually, then later insert it into company’s database. The repetitive data copying causes bigger risk of mistyping and unreliability, because Sales Force travels for weeks. Other problem is that too many paper wasted on Sales Order and Invoice. Furthermore, PT. X needs comprehensive document support for Sales Force to fulfill customer’s need of information. In this research, Sales Force Automation (SFA) software that works online is chosen to meet the expectations. For document supply, due to the amount of documents needed, business taxonomy is made. Because the software is demanded to be easily accessed from wherever and whenever, Android is chosen as the hardware. The results obtained are various features for sales data management, such as view, add, edit, delete, and verification. The admin program supports the Sales Force work appraisal, notification, calculating Sales Force’s earnings per target ratio, Sales Force’s commission, et cetera. The SFA program supports the making of Sales Order, which is to be verified through SMS Gateway before inserted into company’s database, scheduling, et cetera.
INTEGRASI PROSES BISNIS PADA PERUSAHAAN GALANGAN KAPAL PT “XYZ” SHIPYARD MENGGUNAKAN OPENERP
In the shipyard industry, ships produced by order and adjust to consumer demand. Business processes that occur at the shipyard company in the shipbuilding process through several stages, ranging from design to delivery. Processes are still done manually so it may cause some difficulty and time. For the solution, system capability is needed to accelerate the business process. This research considers the OpenERP implementation at PT. XYZ as an application for integrating business processes. The results of this study indicate that OpenERP can answer the problems faced by the business process shipyard company. By using this ERP system offers company integrated system, but success depends on the ERP system implementation strategies are applied. Users can take benefit from the ERP system. The problems of this migration system are on tradition, culture, time and cost.
EVALUASI KUALITAS WEBSITE DITINJAU DARI KEPUASAN USER DENGAN WEB ANALYTIC (STUDI KASUS PADA WEBSITE MAJALAH LIVINGETC INDONESIA)
The purpose of this study is to evaluate livingetcindonesia.com website, in order to improve user satisfaction as an online media and the extent to which the level of user satisfaction to the presentation of the website. The website criteria: perceived usefulness, ease of use, ease of finding information, and the design/layout of page is examined to determine the effect on user satisfaction. Analysis of site infrastructure has been meeting the needs of web and database servers, database structure, web analytics to determine the user visits the website and area/location where a user visiting the website. The survey results showed variable Perceived usefullness, Ease of use, Ease of finding information, and Design/Layout of page significant effect on user satisfaction.
ANALISIS STRATEGI CUSTOMER RELATIONSHIP MANAGEMENT DI PT. XYZ
PT. XYZ is a company that prioritizes loyal customers. However, in its operation, PT. XYZ still has no marketing management that can support the customer loyalty, especially the electronic system ones. It can be seen when this company makes an event. The selection of the customers who can participate is done manually. In addition, there is still no system that handles the complaints from customers. Moreover, the product offering for loyal customer still has no clear system, only based on the knowledge and experience coming from sales force. On the other hand, the technology nowadays is already very developed, making it possible to make it systematic and result in high customer loyalty. The analysis results are CRM strategies, especially electronic-based (e-CRM) strategies to keep the customers loyalty and to attract new customers.
PENGEMBANGAN APLIKASI SISTEM INFORMASI GEOGRAFIS UNTUK MONITORING GEMPABUMI
This Research conducted to develop geographic information system (GIS) that can be used to manage data and visualize the earthquake information. The research methodology consisted of collecting spatial data and non spatial data and system design. System design consists of designing the flow of data, designing databases, designing menus and design screens. The conclusion that can be drawn from this study is that GIS is developed to display information about how the earthquake that has been and is happening with magnitude parameters in a visual form suitable conditions. GIS is designed to use its own database and have the capacity to perform spatial data processing and non-spatial to generate a tsunami early warning system. This system can also simplify and accelerate the delivery of earthquake information to the public.
PERBANDINGAN ANTARA “BIG” WEB SERVICE DENGAN RESTFUL WEB SERVICE UNTUK INTEGRASI DATA BERFORMAT GML
Web Service with Java: SOAP (JAX-WS/Java API for XML Web Services) and Java RESTful Web Service (JAX-RS/Java RESTful API for XML Web Services) are now a technology competing with each other in terms of their use for integrates data residing in different systems. Both Web Service technologies, of course, have advantages and disadvantages. In this paper, we discuss the comparison of the two technologies is a Java Web Service in relation to the development of GIS application (Geographic Information System) integrates the use of data-formatted GML (Geography Markup Language), which is stored in the system database XML (eXtensible Markup Language).
VIRTUAL WEB PROMOSI DAN RESERVASI HOTEL BERBASIS WEB DAN VIA SMS PADA HOTEL DIAMOND
Web and SMS is a new development that is useful for many people as a data exchange media. In the business world, especially for marketing use, by using those two media business can be performed globally so that informations are fast and easily spread all over the world. From this problem born an idea to promote Diamond Hotel by using web and a facility to reserve room using SMS. This Application was created by using VB 6 language and using AT command to communicate with cellphone. Meanwhile, data that flow between system and cellphone are in the form of Protocol Data Unit. System had been tested by sending SMS request from a cellphone and system sent back SMS response as requested by user.
PEMETAAN DINAMIKA WILAYAH ENDEMIK PENYAKIT DEMAM BERDARAH DENGUE KOTA SALATIGA MENGGUNAKAN PENDEKATAN MULTIVARIAT LOCAL INDICATOR SPATIAL ASSOCIATION
The objective of this study is to map the change dynamic of dengue endemic area in Salatiga, Central Java in 2001-2008. This study is carried out in three stages. The first one is the descriptive survey to find the secondary sociodemographic and epidemiologic data. The second stage is data analysis using spatial association, in this case is Global Moran’s dan Local Moran’s (LISA). The last stage is the interpretation of the result of analysis in form of Moran Scatterplot and LISA map. The result of the study shows that spatial pattern based on the dynamic distribution of Dengue occurrence could be identified using Global Moran’s method. From 2001 to 2008, it could be found that there are hotspots and outlier. The area with high frequency of hotspot is Sidorejo Lor, Mangunsari and Kutowinangun. Using Local Moran’s I method, the spatial pattern of the distribution of dengue could be visualized in form of LISA (Local Indicator Spatial Association) map. The map is categorized into HH, HL, LH dan LL. The ABJ value is not significant with the dengue happenings in each village. The area with high ABJ is not followed by the high value of dengue happening. Based on the choropleth, it could be described that the dengue happening is caused by the dense of the population. The result of this study could be used as a tool to control and identify the cause of dengue.
IMPLEMENTASI SISTEM OTENTIKASI PADA PENGGUNA JARINGAN HOTSPOT DI UNIVERSITAS KANJURUHAN MALANG GUNA MENINGKATKAN KEAMANAN JARINGAN KOMPUTER
The number of client server applications using both desktop and WEB Application makes every user must have a lot of user id and password that must be memorized, because each application must require authentication in order to utilize the application for security reasons. Besides the development of network media is also growing use of both wired and wireless. From the above explanation RADIUS technology is desperately needed in the case described above, since the RADIUS method allows a user simply has a userID for access to multiple applications, both desktop and WEB application. RADIUS can also integrated method of wired and wireless media.
APLIKASI PEMERIKSAAN PERSYARATAN YUDISIUM PADA PROGRAM STUDI TEKNIK INFORMATIKA UNIVERSITAS KRISTEN PETRA
Informatics Engineering Department Petra Christian University do inspection process for judicium manually. This manual process spends considerable time and difficulty in adjusting to the curriculum and regulations. Based on the problems faced by the Department of Informatics, the author develops an application to help speed up and simplify the judicium inspection. This application includes the setting of curriculum, setting fields of study, inspection requirements judicium, determining areas of study graduated students and graduation report. This application was created using ASP.Net programming language and MYSQL as a database. Based on the testing processes, this application has been able to meet the needs of Department of Informatics in the judicium inspection process.
PENGEMBANGAN EVALUASI PEMBELAJARAN BERBASIS MULTIMEDIA DENGAN FLASH, PHP, DAN MySQL
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.
PETRA CHRISTIAN UNIVERSITY STUDENT EXECUTIVE BOARD (BEM) PROJECT MANAGEMENT SYSTEM
Petra Christian University Student Executive Board (BEM) needs an administrative and project management system that can help managing the activities. This Board was having a problem of coordination on managing the activities they have. The tight schedule of each member of the executive staffs who comes from different departments has created this problem. To answer the above problem, an administrative and project management system is developed to help PCU BEM managing each of their activities. The scope of the system covers access privileges, job divisions and task assignments, proposal creation and budgeting arrangements of the implementation of each activity. The application is developed as a web-based system using Macromedia Dreamweaver MX 2004, PHP and JavaScript programming language and MySQL database system. The system testing concludes that the application is able to support the performances of the BEM executive staff members in managing their activities. The detailed job divisions let the implementation process of each activity be easily viewed by each executive staff member.
APLIKASI QUESTION ANSWERING SYSTEM DENGAN METODE RULE-BASED QUESTION ANSWERING SYSTEM PADA ALKITAB
The Bible as the holy book of Christians who are very close to the religious life and as a moral guide for Christians. So the Bible become a necessity when a christians want to search for for specific data or information. But sometimes to find the answer to a question people sometimes having a trouble, because people did not know how to find the answer that they are looking for at the verses in the Bible that’s relatively large of amount. Therefore an application that have an ability to provide answers from the Bible verses that have the possibility of answers to questions raised by the user is needed. Where users can enter questions using keyword when, where, why, whom and what. Question Answering System Application will operate on a digital Bible in Indonesian language by using Rule-Based Question Answering System and created using Visual Basic 6.0 and Microsoft Access 2003 database. Based on application testing that made, the aplication has been able to find answers to the questions that asked according to the keywords. Meanwhile, based on testing with the questionnaire, the application obtained an average percentage of 77.2% from the respondents.
PENGECEKAN PLAGIARISME PADA CODE DALAM BAHASA C++
Informatics department of Petra Christian University has used to practice programming for students at programming studio, especially students who take algorithms and programming course. The system is currently implemented is to provide practice programming skill according to their ability. Assessment is done by calculating the points of all questions are done correctly. Problem which occurs at about the work in programming studio is plagiarism among students’ work. Unfortunately, plagiarism checking consumes a lot of time. In one semester, each student can do about 100 questions. If the total of students taking programming course, at least 100 people, we need many people to do this work. Departing from this problem, we design and develop an application to check for plagiarism between two different answer files from the same question. The degree of similarity is calculated using combined method of Jaccard similarity coefficient and cosine similarity coefficient. This system is able to check similarities in source code files are the work of students with moderate levels of complexity.
ADAPTIVE BACKGROUND DENGAN METODE GAUSSIAN MIXTURE MODELS UNTUK REAL-TIME TRACKING
Nowadays, motion tracking application is widely used for many purposes, such as detecting traffic jam and counting how many people enter a supermarket or a mall. A method to separate background and the tracked object is required for motion tracking. It will not be hard to develop the application if the tracking is performed on a static background, but it will be difficult if the tracked object is at a place with a non-static background, because the changing part of the background can be recognized as a tracking area. In order to handle the problem an application can be made to separate background where that separation can adapt to change that occur. This application is made to produce adaptive background using Gaussian Mixture Models (GMM) as its method. GMM method clustered the input pixel data with pixel color value as it’s basic. After the cluster formed, dominant distributions are choosen as background distributions. This application is made by using Microsoft Visual C 6.0. The result of this research shows that GMM algorithm could made adaptive background satisfactory. This proofed by the result of the tests that succeed at all condition given. This application can be developed so the tracking process integrated in adaptive background maker process. Abstract in Bahasa Indonesia : Saat ini, aplikasi motion tracking digunakan secara luas untuk banyak tujuan, seperti mendeteksi kemacetan dan menghitung berapa banyak orang yang masuk ke sebuah supermarket atau sebuah mall. Sebuah metode untuk memisahkan antara background dan obyek yang di-track dibutuhkan untuk melakukan motion tracking. Membuat aplikasi tracking pada background yang statis bukanlah hal yang sulit, namun apabila tracking dilakukan pada background yang tidak statis akan lebih sulit, dikarenakan perubahan background dapat dikenali sebagai area tracking. Untuk mengatasi masalah tersebut, dapat dibuat suatu aplikasi untuk memisahkan background dimana aplikasi tersebut dapat beradaptasi terhadap perubahan yang terjadi. Aplikasi ini dibuat untuk memisahkan background dengan menggunakan metode Gaussian Mixture Models (GMM). Metode GMM melakukan cluster data piksel dengan menggunakan warna background tiap piksel sebagai dasarnya. Setelah cluster dibentuk, dilakukan pencocokan input sebagai distribusi, dimana distribusi yang dominan dijadikan sebagai background. Aplikasi ini dibuat dengan menggunakan Microsoft Visual C 6.0. Hasil dari penelitian ini menunjukkan bahwa algoritma GMM dapat beradaptasi terhadap background. Hal ini dibuktikan dengan hasil pengujian yang sukses terhadap semua kondisi yang diberikan. Aplikasi ini dapat dikembangkan lebih lanjut supaya proses tracking dapat terintegrasi dengan background yang adaptive. Kata Kunci : adaptive, background , Gaussian Mixture Models (GMM)
VIRTUAL POINTER UNTUK IDENTIFIKASI ISYARAT TANGAN SEBAGAI PENGENDALI GERAKAN ROBOT SECARA REAL-TIME
Many previous researches have been done in relation to human-robot interface, which is an interaction between human and robot using hand gesture. Hand gesture that is used in this research is a moving hand gesture with pointing position. The most important factor to identify hand gesture is the ability to differentiate hands with other objects based on the skin colour. A method to detect hand skin colour is using Fuzzy C-Means (FCM) which can refine a cluster centre and the membership value of each data iteratively by minimizing objective function. Hence, the cluster centre moves to the correct location. Recognition result with moving detection method was able to detect the movement of a moving object 91.07944% in 1 second. Skin detection using FCM was able to segment skin colour and not the skin in real time with the successful rate 90.2834%. The successful rate of the hand gesture pattern identification using rule base is 86.67%. The successful rate of virtual hand writing using LVQ artificial neural network as a command for controlling a robot is 79.2%. Abstract in Bahasa Indonesia : Banyak penelitian sebelumnya berrhubungan dengan human robot interface, interaksi manusia dengan robot menggunakan isyarat tangan sebagai bahasa tubuh manusia. Isyarat tangan yang digunakan dalam penelitian ini adalah isyarat tangan bergerak yang berposisi menunjuk untuk identifikasi isyarat tangan, faktor yang paling penting adalah kemampuan membedakan tangan dengan obyek lain berdasarkan warna kulitnya. Metode untuk mendeteksi warna kulit tangan adalah Fuzzy C-Means (FCM) yang memiliki kemampuan memperbaiki pusat cluster dan nilai keanggotaan tiap data secara berulang dengan meminimumkan fungsi obyektif, sehingga pusat cluster akan bergerak menuju lokasi yang tepat. Hasil pengenalan dengan metode moving detection, mampu mendeteksi pergerakan obyek bergerak. secara baik sebesar 91.07944% dalam 1 detik. obyek Skin detection dengan Fuzzy C-Means (FCM) mampu melakukan segmentasi warna kulit dan bukan kulit secara real-time dengan tingkat keberhasilan. 90.2834% Identifikasi pola isyarat tangan dengan rule base tingkat keberhasilannya 86.67%. Identifikasi hasil virtual hand writing menggunakan jaringan syaraf tiruan metode LVQ sebagai perintah untuk mengendalikan robot tingkat keberhasilannya mencapai 79.2%. Kata Kunci : virtual pointer , Fuzzy C-Mean (FCM), jaringan syaraf tiruan LVQ
CLUSTER ANALYSIS UNTUK MEMPREDIKSI TALENTA PEMAIN BASKET MENGGUNAKAN JARINGAN SARAF TIRUAN SELF ORGANIZING MAPS (SOM)
Basketball World has grown rapidly as the time goes on. This is signed by many competition and game all over the world. With the result there are many basketball players with their different playing characteristics. Demand for a coach or scout to look for or search great players to make a solid team as a coach requirement. With this application, a coach or scout will be helped in analyzing in decision making. This application uses Self Organizing Maps algorithm (SOM) for Cluster Analysis. The real NBA player data is used for competitive learning or training process and real player data from Indonesian or Petra Christian University Basketball Players is used for testing process. The NBA Player data is prepared through cleaning process and then is transformed into a form that can be processed by SOM Algorithm. After that, the data is clustered with the SOM algorithm. The result of that clusters is displayed into a form that is easy to view and analyze. This result can be saved into a text file. By using the output / result of this application, that are the clusters of NBA player, the user can see the statistics of each cluster. With these cluster statistics coach or scout can predict the statistic and the position of a testing player who is in the same cluster. This information can give a support for the coach or scout to make a decision. Abstract in Bahasa Indonesia : Dunia bola basket telah berkembang dengan pesat seiring dengan berjalannya waktu. Hal ini ditandai dengan munculnya berbagai macam dan jenis kompetisi dan pertandingan baik dunia maupun dalam negeri. Sehingga makin banyak dilahirkannya pemain berbakat dengan berbagai karakteristik permainan yang berbeda. Tuntutan bagi seorang pelatih/pemandu bakat, untuk dapat melihat secara jeli dalam memenuhi kebutuhan tim untuk membentuk tim yang solid. Dengan dibuatnya aplikasi ini, maka akan membantu proses analisis dan pengambilan keputusan bagi pelatih maupun pemandu bakat Aplikasi ini menggunakan algoritma Self Organizing Maps (SOM) untuk melakukan analisis cluster. Data real pemain NBA digunakan untuk keperluan proses training dan data real pemain Indonesia /pemain Universitas Kristen Petra untuk proses testing. Data pemain NBA dipersiapkan dengan melalui proses cleaning dan di transformasi ke bentuk yang dapat diolah oleh algoritma SOM. Kemudian data diolah menggunakan algoritma SOM untuk menghasilkan cluster-cluster data. Hasil cluster-cluster ini ditampilkan dalam bentuk yang mudah untuk dilihat dan digunakan sebagai analisis.Hasil tersebut dapat disimpan pula dalam bentuk file teks. Dengan menggunakan output dari aplikasi ini, yang berupa cluster pemain basket, pengambil keputusan dapat melihat statistik tiap cluster. Dengan menggunakan statistik tiap cluster, pelatih atau pemandu bakat dapat memprediksi statistik dan posisi di lapangan seorang pemain basket yang ditest, yang berada pada sebuah cluster tertentu. Informasi ini dapat membantu pelatih atau pemandu bakat dalam pengambilan keputusan. Kata Kunci : cluster analysis, Self Organizing Maps (SOM), pemain basket
PENERAPAN FUZZY IF-THEN RULES UNTUK PENINGKATAN KONTRAS PADA CITRA HASIL MAMMOGRAFI
In medical area, the quality of an image which is acquired from mammography often has a poor contrast. The poor quality image leads a difficulty for a radiologist to analyze the image. The problem becomes bigger when the image contains a cancer or tumor. There are some methods in image processing technique to increase the contrast quality of an image. This paper presents Fuzzy IF-THEN Rules method which has four knowledge base approaches to increase the contrast quality of the image, especially breast images from mammography. To determine the success rate, this experiment tries to compare this method with a standard contrast improvement such as histogram equalization. The quantity parameters to compare these methods are linier index of fuzziness and fuzzy entropy. The result shows that Fuzzy IF-THEN Rules offers better result to improve the contrast quality than standard method. The result of this experiment is validated by an expert from radiology department from Husada Hospital, Jakarta. Abstract in Bahasa Indonesia : Citra hasil dari mammografi dalam dunia kedokteran sering memiliki kualitas yang buruk dari sisi kontras. Hal ini mengakibatkan kesulitan bagi seorang radiolog untuk menganalisis citra tersebut. Tingkat kesulitan bertambah apabila citra yang harus dianalisis tersebut mengandung kanker atau tumor. Terdapat beberapa metode untuk peningkatan kualitas kontras sebuah citra. Penelitian ini menggunakan metode Fuzzy IF-THEN Rules dengan empat pendekatan basis pengetahuan untuk meningkatkan kualitas kontras citra, khususnya citra payudara yang diperoleh dari hasil mammografi. Untuk menentukan tingkat keberha-silannya, metode tersebut akan dibandingkan dengan metode standar untuk peningkatan kontras seperti Histogram Equalization. Parameter yang digunakan untuk membandingkan setiap metode tersebut adalah linier index of fuzziness dan fuzzy entropy. Hasil percobaan menunjukkan bahwa Fuzzy IF-THEN Rules mampu menghasilkan hasil peningkatan kualitas citra yang lebih baik dibandingkan metode standar. Untuk memperkuat hasil penelitian ini maka dilakukan validasi dengan pakar radiolog dari Rumah Sakit Husada, Jakarta.