Lontar Komputer: Jurnal Ilmiah Teknologi Informasi
Lontar Komputer [ISSN Print 2088-1541] [ISSN Online 2541-5832] is a journal that focuses on the theory, practice, and methodology of all aspects of technology in the field of computer science and engineering as well as productive and innovative ideas related to new technology and information systems. This journal covers research original of paper that has not been published and has been through the double-blind reviewed journal. Lontar Komputer published three times a year by Research institutions and community service, University of Udayana. Lontar Komputer already indexing in Scientific Journal Impact Factor with impact Value 3.968. Lontar Komputer already indexing in SINTA with score S2 and H-index 5.
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226 Documents
<![CDATA[PENGARUH DUKUNGAN MANAJEMEN PUNCAK, PENGALAMAN TI DAN KEAHLIAN TI LUAR ORGANISASI TERHADAP KESELARASAN STRATEGIS (STUDI KASUS PADA UKM EKSPORTIR DI PROVINSI BALI) ]]>
<![CDATA[I Ketut Adi Purnawan]]>
<![CDATA[ Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 2, No. 1 Juni 2011 ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Udayana University ]]>
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<![CDATA[Penelitian ini bertujuan untuk mengetahui dan membuktikan pengaruh dukungan manajemen puncak, pengalaman TI dan keahlian TI luar organisasi terhadap keselarasan strategis. Hipotesis yang diajukan adalah: (1) dukungan manajemen puncak berpengaruh positif terhadap keselarasan strategis, (2) pengalaman TI organisasi berpengaruh positif terhadap keselarasan strategis dan (3) keahlian TI luar organisasi berpengaruh positif terhadap keselarasan strategis. Objek penelitian berjumlah 60 perusahaan, yang terdiri dari perusahaan Kargo, Tekstil dan produk tekstil, Handicraft, Kerajinan Perak, Furniture dan Produk lainnya yang ada di Provinsi Bali. Pengumpulan data dilakukan dengan metode angket kuesioner. Metode statistik yang digunakan adalah analisis regresi berganda. Hasil analisis penelitian menunjukkan hubungan yang positif signifikan antara dukungan manajemen puncak, pengalaman TI dan keahlian TI luar organisasi terhadap keselarasan strategis pada UKM eksportir di Provinsi Bali. (R2=0.184 ; Adjusted R2 =0.140; F =4.199; Sig. F = 0,009).]]>
<![CDATA[Rancang Bangun Aplikasi Pendeteksi Titik Koordinat Frekuensi Lightning Whistler ]]>
<![CDATA[Philipus Novenando M Weking]]>;
<![CDATA[I Putu Agung Bayupati]]>;
<![CDATA[I Nyoman Piarsa]]>
<![CDATA[ Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 7, No. 3 Desember 2016 ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Udayana University ]]>
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DOI: 10.24843/LKJITI.2016.v07.i03.p07
<![CDATA[Unusual activities of earth can be seen by human on a certain time caused by some earth activities change. One of them is the phenomena on atmosphere namely Lightning Whistler. Lightning Whistler is an electromagnetic wave that happens after a lighting on the magnetosphere and ionosphere, where a sound like a whistle is produced. This wave that traverse on radio frequency is called as whistler wave. This research proposed an application for detecting the frequency coordinate of a lightning whistler. The proposed application used STFT, image processing, and morphology image. STFT method is used to convert audio data into spectrogram image data. Afterwards, spectrogram image is processed by using image processing method to reduce noise. Finally, morphology image method is implemented to thicken the whistler wave signal to simplify the detection of coordinate. The proposed application can detect coordinate of a whistler wave signal, in the form of coordinate location, and the number of detected signal, based on time and period.]]>
<![CDATA[Pembuatan Aplikasi Catalog 3D Desain Rumah Sebagai Sarana Promosi Dengan Menggunakan Unity 3D ]]>
<![CDATA[Siryantini Nurul Adnin]]>;
<![CDATA[Ida Bagus Ketut Widiartha]]>;
<![CDATA[I Made Budi Suksmadana]]>
<![CDATA[ Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 7, No. 1 April 2016 ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Udayana University ]]>
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DOI: 10.24843/LKJITI.2016.v07.i01.p01
<![CDATA[This study incorporate AR into a technology home Catalog sales, thus Catalog home is becoming more real with 3D objects in it. This research aims to produce an application that can display a 3D model of a house that can help buyers to know well the home to be purchased, and will simplify the home seller as a media campaign to consumers. 3D objects used to develop two kinds of Software that Sweet Home 3D and Blender, whereas to create application in programming used Unity 3D Software using the C # programming language. Application home design Catalog is made through several stages of design 3D objects, Marker workmanship and application design. The end result consists of two forms, namely in the form of physical (in the form of print media Catalog) that contains a marker on some pages and Augmented Reality applications based on Android in the form of .apk which is then installed on Smartphones, where the two are complementary.]]>
<![CDATA[CHAOTIC OSCILLATIONOFA THREE-BUS POWER SYSTEM MODEL USING ELMANNEURAL NETWORK ]]>
<![CDATA[I Made Ginarsa]]>;
<![CDATA[Adi Soeprijanto]]>;
<![CDATA[Mauridhi Hery Purnomo]]>
<![CDATA[ Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 4, No. 2 Agustus 2013 ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Udayana University ]]>
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<![CDATA[Paper ini meneliti dan membahas secara mendalam mengenai osilasi chaotic pada sistem tenaga listrik.Dengan menggunakan sebuah three-bus pada sistem tenaga listrik, rute mungkin menyebabkan unjuk kerja chaotic sehingga dievaluasi, digambarkan serta dibahas dalam penelitian ini. Osilasi chaotic ini dimodelkan menggunakan Elmanneural network karena bentuknya yang sederhana dan juga melibatkan algoritmabackpropagation dengan adaptive learning rate dan momentumnya.Unjuk kerja learning rate dan momentumnya lebih baik dibandingkan jika tanpa momentumnya. Unjuk kerja chaotic dalam sistem tenaga listrik muncul karena sistem ini dioperasikan dalam mode critical. Unjuk kerja chaotic ini terdeteksi dengan munculnya sebuahchaotic attractordalam phase-plane trajectory.]]>
<![CDATA[Prioritas Baru untuk sistem Produksi Pakan ternak sapi Perah menggunakan Fuzzy AHP ]]>
<![CDATA[Puspa Ayu Indah Prameswari]]>
<![CDATA[ Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 9, No. 3 December 2018 ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Udayana University ]]>
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DOI: 10.24843/LKJITI.2018.v09.i03.p03
<![CDATA[Management criteria can be used as the deciding device of the performance of dairy cows feed production system successfulness by prioritizing those criteria, and it can be used as an improvement step. The aim of this study was to determine the priority of management criteria and established the improvement step to increase the performances of the dairy cows feed production system in Batu, East Java by prioritizing four management criteria (Planning, Organizing, Directing, and Controlling). The method used the Fuzzy Analytic Hierarchy Process (Fuzzy-AHP) which is a combination of two methods, Analytic Hierarchy Process (AHP) and fuzzy logic. Fuzzy AHP is proposing an evaluation tool which inherits advantages from that two methods. Fuzzy AHP will translate decisions makers comparison judgment into the fuzzy number. There were three highest priorities for management criteria, namely goal planning for the long-term from planning criteria, divisions of work from organizing criteria, and activator from controlling criteria. It was concluded that those three highest management criteria could be established as an improvement step for the performances of dairy cows feed production system.]]>
<![CDATA[SISTEM BERBASIS PENGETAHUAN UNTUK KESEHATAN DAN PERAWATAN BAYI ]]>
<![CDATA[I Made Sukarsa]]>;
<![CDATA[I Made Suwija Putra]]>
<![CDATA[ Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 1, No. 1 Desember 2010 ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Udayana University ]]>
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<![CDATA[Babies are very susceptible to germs of disease, environmental factors and lack ofsensitivity to the symptoms of a disease, of course is a distinct fear for parents. Therefore madea convenience by utilizing technology in the form of knowledge-based system that uses a webbasedmedia.Knowledge-based system for health and infant care is a web-based system that presentssolutions to overcome the disease in infant health problems and also provide treatment for anydisease problems encountered. This system provides the facility to help users diagnose thedisease in identifying health problems being faced by the baby. This identification process isdone through question and answer interaction between the system with the user or user-input and the lawyer's disease symptoms. The system also provides facilities for managingknowledge is performed by the system administrators who called the Knowledge Engineer inmaking changes to data in the knowledge base. With this facility, the addition of knowledge,change the rules in the knowledge base and system development through the acquisition ofnew knowledge can be directly done without having to dismantle the system that is so. This willallow the system to keep up to date. Methods of tracing disease conclusion which is used onthis system is tracking trace forward (forward chaining). Rules in the knowledge base ismodeled as a tree by using the MySQL database and PHP programming language.The results of this knowledge-based inference system is diagnoses the illness of the baby. Ofthe system implemented, the conclusion that in general the system can run well. Neverthelessthere is still a lack of success of early diagnosis of disease and very dependent on administratorwith expertise in building a knowledge base.]]>
<![CDATA[Implementasi Pengamanan PGP Pada Platform Zimbra Mail Server ]]>
<![CDATA[Dandy Pramana Hostiadi]]>;
<![CDATA[Ida Bagus Suradarma]]>
<![CDATA[ Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 8, No. 1 April 2017 ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Udayana University ]]>
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DOI: 10.24843/LKJITI.2017.v08.i01.p05
<![CDATA[Electronic mail is a communication model that is fundamental in the era of globalization. Proven on any form of registration data or information requires the presence of email address(electronic mail). The use of email itself cannot be separated from the abuse (such as stelling password and mail spoofing) from some parties so it needs security form in email communication. Communication security on mail server such as ZIMBRA mail server has been well-implemented, such as the use of ssl certificate. But the security is still standard. So, when user and password have been found out by third party, email content will be read easily (in cryptography technique it is called plaintext reading). On research that was conducted with pretty good privacy (PGP) method email communication security was focused on the email content by encrypting mail text along with the attachment file. In a study conducted, using the mail engine Zimbra mail server. Result of research shows that PGP security is able to secure email content whether the text or the attachment, showing difference of attachment file size is bigger on PGP using and change mail header from the standard mail.]]>
<![CDATA[Penerapan Fuzzy C-Means Untuk Penentuan Besar Uang Kuliah Tunggal Mahasiswa Baru ]]>
<![CDATA[Ariyady Kurniawan Muchsin]]>;
<![CDATA[Made Sudarma]]>
<![CDATA[ Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 6, No.3 Desember 2015 ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Udayana University ]]>
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DOI: 10.24843/LKJITI.2015.v06.i03.p04
<![CDATA[In accordance with the mandate of the 1945 Constitution article 31 concerning the education authorities have issued various policies to realize the cost of education is getting cheaper and affordable to all people, one of which is the system UKT (Tuition Single) which is partially Tuition Single (BKT) which were passed to each student based on their economic capabilities. UKT grouping mechanism is still done manually by Udayana University which resulted in the value of equity for prospective new students to their economic capacity is still lacking. Therefore, it needs a mechanism for charging and determination UKT which can be done online, so as to improve efficiency and effectiveness. The next solution that can be done is by using classification techniques using Fuzzy C-Means (FCM) and Beni Xie Index to determine the optimum clusters in the process of determining the type UKT so as to meet the values ??of justice for prospective new students.]]>
<![CDATA[Data Transmission Method on a Room Condition Telemonitoring Application (IoT) ]]>
<![CDATA[Midriem Mirdanies]]>
<![CDATA[ Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 10, No. 3 December 2019 ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Udayana University ]]>
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DOI: 10.24843/LKJITI.2019.v10.i03.p05
<![CDATA[Data transmission system in IoT applications such as telemonitoring, using cable or wireless, requires a robust data transmission method. In this paper, a room condition telemonitoring application has been made where all data are read from raspberry pi, and sent to a pc server every minute using LAN and Wifi media, then update to a webserver. The data are sent using the method proposed in this paper which using the UDP mechanism with several improvements. Experiments have been done using LAN and Wifi, and it is found that the data can be received perfectly, although there are interferences from communication media. The average processing time on a raspberry pi is 19 ms, while the average processing time on the pc server is 5 us. In addition, the average processing speed of the transmission data from raspberry pi to a pc server until ack is received by raspberry pi using LAN media is 0.04 second, while using Wifi media is 0.08 seconds. Based on the experiments, it was found that the proposed method was successfully implemented in the room condition telemonitoring.]]>
<![CDATA[PERANCANGAN PENGANALISIS STRUKTUR KALIMAT BAHASA INDONESIA DENGAN MENGGUNAKAN CONSTRAINT-BASED FORMALISM ]]>
<![CDATA[I Made Sulastra]]>
<![CDATA[ Lontar Komputer : Jurnal Ilmiah Teknologi Informasi Vol. 5, No. 2 Agustus 2014 ]]>
Publisher : <![CDATA[Institute for Research and Community Services, Udayana University ]]>
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<![CDATA[Tujuan utama penelitian ini adalah menganalisa struktur kalimat bahasa Indonesia dengan menggunakan metode constraint-based formalisms. Constraint based-formalisms adalah suatu metode yang memungkinkan aturan-aturan sintaks untuk diberikan suatu batasan-batasan sehingga dapat meminimalkan keambiguan dari aturan sintaks yang dibuat. Struktur sintaks yang dibangun pada penelitian ini mengacu pada aturan-aturan sintaks yang terdapat di dalam buku tata bahasa baku bahasa Indonesia edisi ketiga. Pada penelitian ini, penulis memfokuskan pada pembuatan aturan sintaks untuk frasa nominal. Pembuatan pengurai sintaks kalimat bahasa Indonesia ini menggunakan alat bantu PC-PATR. PC-PATR ini merupakan implementasi dari constraint-based formalisms pada personal computer. Domain kalimat-kalimat yang akan digunakan pada penelitian ini adalah kalimat-kalimat yang terdapat pada media massa elektronik. Hasil uji coba yang dilakukan terhadap kumpulan kalimat pada media massa elektronik cukup baik. Sebanyak 93,68 % dari 380 kalimat masukan dapat diuraikan dengan benar oleh pengurai, dan berhasil menolak 3,16 % kalimat input yang salah struktur kalimatnya; sedangkan 2,11 % dari 380 kalimat masukan ini tidak berhasil diuraikan walaupun struktur kalimat masukan sesuai dengan tata bahasa baku dan juga terdapat sebanyak 1,05 % kalimat masukan yang hasil penguraiannya salah.]]>
