Garuda - Garba Rujukan Digital

Analisa Alokasi Memori dan Kecepatan Kriptograpi Simetris Dalam Enkripsi dan Dekripsi Perangin-angin, Resianta; Jaya, Indra Kelana; Rumahorbo, Benget; Marpaung, Berlian Juni R
Journal Information System Development (ISD) Vol 4, No 1 (2019): Journal Information System Development (ISD)
Publisher : UNIVERSITAS PELITA HARAPAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (601.236 KB)

Currently the focus of cryptography is on the security and speed of data transmission. Cryptography is the study of how to secure information. This security is done by encrypting the information with a special key. This information before being encrypted is called plaintext. After being encrypted with a key called ciphertext. At present, AES (Advanced Encryption Standard) is a cryptographic algorithm that is safe enough to protect confidential data or information. In 2001, AES was used as the latest cryptographic algorithm standard published by NIST (National Institute of Standard and Technology) in lieu of the DES (Data Encryption Standard) algorithm that has expired. The AES algorithm is a cryptographic algorithm that can encrypt and decrypt data with varying key lengths, namely 128 bits, 192 bits, and 256 bits. From the results of tests carried out for speed and classification memory, it can be concluded that the AES cryptographic algorithm is superior or faster if the size or size of the plaint text is not so large, because for the smaller AES algorithm the speed ratio in terms of encryption will become more fast, it becomes very different for the Blowfish algorithm itself where for large sizes plaint text can be encrypted faster than AES but for smaller sizes Blowfish is certainly slower in that case, for memory allocation in this case from the tests performed it can be concluded that AES requires more storage space or larger memory allocation compared to the blowfish algorithm

OPTIMASI KETAHANAN WATERMARKING AUDIO DIGITAL MENGGUNAKAN ALGORITMA RSA DAN MSB Rumahorbo, Benget; Perangin-angin, Resianta
METHODIKA: Jurnal Teknik Informatika dan Sistem Informasi Vol. 7 No. 1 (2021): Maret 2021
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/mtk.v7i1.409

Copyright is a serious problem in the digital world, the process of sending and distributing digital media is so easy nowadays, copyright in the digital world is very detrimental to those who feel that their digital rights are copied and pasted or taken without the consent of the creator. Therefore we need a way where when a digital file can be identified as original as a product, one of the right ways is to use a watermark technique. But often this watermark process can be lost or cannot be extracted because the digital file has gone through a compression process, duplicate, or something else. So in this study, it will be tried to increase the durability of a watermark in digital audio as a solution for identifying copyrighted digital works. Where the watermark process will use the RSA and MSB algorithms to enter information into a digital audio file, later this information can be extracted to view copyright ownership information from the digital audio. And it is hoped that this watermarking is resistant to various digital audio processes such as compression, duplication, and editing carried out on the file. the information that is inserted into is maintained without compromising the quality of the digital audio.

Analisa Alokasi Memori dan Kecepatan Kriptograpi Simetris Dalam Enkripsi dan Dekripsi Resianta Perangin-angin; Indra Kelana Jaya; Benget Rumahorbo; Berlian Juni R Marpaung
Journal Information System Development Vol 4, No 1 (2019): Journal Information System Development (ISD)
Publisher : UNIVERSITAS PELITA HARAPAN

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

Currently the focus of cryptography is on the security and speed of data transmission. Cryptography is the study of how to secure information. This security is done by encrypting the information with a special key. This information before being encrypted is called plaintext. After being encrypted with a key called ciphertext. At present, AES (Advanced Encryption Standard) is a cryptographic algorithm that is safe enough to protect confidential data or information. In 2001, AES was used as the latest cryptographic algorithm standard published by NIST (National Institute of Standard and Technology) in lieu of the DES (Data Encryption Standard) algorithm that has expired. The AES algorithm is a cryptographic algorithm that can encrypt and decrypt data with varying key lengths, namely 128 bits, 192 bits, and 256 bits. From the results of tests carried out for speed and classification memory, it can be concluded that the AES cryptographic algorithm is superior or faster if the size or size of the plaint text is not so large, because for the smaller AES algorithm the speed ratio in terms of encryption will become more fast, it becomes very different for the Blowfish algorithm itself where for large sizes plaint text can be encrypted faster than AES but for smaller sizes Blowfish is certainly slower in that case, for memory allocation in this case from the tests performed it can be concluded that AES requires more storage space or larger memory allocation compared to the blowfish algorithm

PENERAPAN ALGORITMA SAFE-LEVEL-SMOTE UNTUK PENINGKATAN NILAI G-MEAN DALAM KLASIFIKASI DATA TIDAK SEIMBANG Resianta Perangin-angin; Eva Julia Gunawati Harianja; Indra Kelana Jaya; Benget Rumahorbo
METHOMIKA: Jurnal Manajemen Informatika & Komputerisasi Akuntansi Vol. 4 No. 1 (2020): METHOMIKA: Jurnal Manajemen Informatika & Komputersisasi Akuntansi
Publisher : Universitas Methodist Indonesia

Klasifikasi data yang tidak seimbang merupakan masalah yang krusial pada bidang machine learning dan data mining. Ketidakseimbangan data memberikan dampak yang buruk pada hasil klasifikasi dimana kelas minoritas sering disalah klasifikasikan sebagai kelas mayoritas. Dimana kelompok kelas minoritas (minority) adalah kelompok kelas yang memiliki data lebih sedikit, dan kelompok kelas mayoritas (mayority) adalah kelompok kelas yang memiliki jumlah data lebih banyak. Data tidak seimbang adalah suatu kondisi dimana jumlah contoh dari salah satu kelas jauh lebih banyak dari kelas yang lain. Alasan buruknya kinerja metode klasifikasi biasa yang digunakan pada data tidak seimbang adalah bahwa tujuan metode klasifikasi dalam meminimumkan galat secara keseluruhan tidak dapat tercapai karena kelas minoritas hanya sedikit memberikan kontribusi, selain itu keputusan akhir yang dihasilkan tidak tepat karena terjadinya bias. Hal ini disebabkan oleh salah satu kelas mendominasi dalam hal jumlah. Dalam penelitian ini akan berfokus pada peningkatan nilai G-Mean dari dataset yang digunakan, dengan menerapkan algoritma Safe-Level-Smote. Dari hasil ujicoba yang dilakukan terhadap dua dataset yakni Abalon dan Vowel, untuk skema Smote + k-NN nilai G-Mean yang didapat yakni 0,47 untuk dataset Abalon dan 0.94 untuk dataset Vowel. Seletah dilakukan ujicoba terhadap dataset yang sama menggunakan skema Safe-Level-Smote menggunakan algoritma klasifikasi k-NN didapat hasil G-Mean 0,59 untuk dataset Abalon dan 1.00 Untuk dataset Vowel, rerata dari kenaikan nilai G-Mean terhadap algoritma Smote sebesar 12,68%. Hal ini membuktikan bahwasanya algoritma Safe-Level-Smote dapat meningkatkan nilai G-Mean pada klasifikasi data tidak seimbang menggunakan algoritma klasifikasi k-Nearst Neighbors.

PENDAYAGUNAAN ILMU TEKNOLOGI KOMPUTER DITINJAU DARI SUDUT IMAN KRISTEN Benget Rumahorbo
METHODIKA: Jurnal Teknik Informatika dan Sistem Informasi Vol. 1 No. 1 (2015): Maret 2015
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/mtk.v1i1.14

The advancement of of computer science has changed the world from wide to tight;long to short;uneasy to easy. Computer technology has made the world unlimited. By finding the formulations of computer new capacity like it has been able to replace the position of human's brain in any knowledge and activities. In other words, the progress of computer science which has been reached till now has been truely avowed by world. Computer gives facilities and pleasure in life. In the reality computer has given the contribution to human's culture and prosperity. However human can't resist the reality that computer science has also given damage and misery to people. The reality from the life now is computer technology is able to reveal the secret of nature and life, but it is not the same as the truth. In other words computer is just able to give the reality. Meanwhile the truth is not humane. The humane truth is not only that but it must be objective which cover the justice. Computer technology doesn't know the solution of human's moral, so human mostly use the computer technology for amoral things and influences human's attitude in the real life. Based on the reality, recently computer has been used for criminal behavior, so it must be behaved from the truth of Allah saying. So people do not abuse computer to negative things but for the positive things.

SISTEM PAKAR KONSULTASI DAN KONSELING MAHASISWA BERMASALAH DARI PRESPEKTIF KRISTIANI Benget Rumahorbo; Darwis Robinson Manalu
METHODIKA: Jurnal Teknik Informatika dan Sistem Informasi Vol. 2 No. 1 (2016): Maret 2016
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/mtk.v2i1.28

In general, students are more tightly when faced with personal problems, financial problems, family and moral issues. So often there is a failure as a result of the issue unresolved. So expect the need for an application or system for media consulting experts to find a solution in accordance with their respective problems. So that problems can be detected early, it can use an application that has been designed based on the data of experts that has been incorporated into the database of knowledge. These types of problems and solutions are dynamic based on user needs and new knowledge experts found. Categories are often problematic issues of personality, economics and finance, family, education and other social issues. Data experts will first be incorporated as early knowledge that has been given by the experts. Sources of data obtained from the experience of experts encountered during counseling in college. Then the inference engine will draw final conclusions based on searches that have been determined on the basis of the rules. The goal is student can perform expert counseling through applications designed. The method used in the search is a method Best First Search and search by the method of backward chaining. Results from this study is a useful application for counseling for troubled students

ANALISIS DAN PERANCANGAN APLIKASI MARKETPLACE CINDERAMATA KHAS BATAK BERBASIS ANDROID Betti Dame Hutauruk; Jimmy Febrianus Naibaho; Benget Rumahorbo
METHODIKA: Jurnal Teknik Informatika dan Sistem Informasi Vol. 3 No. 1 (2017): Maret 2017
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/mtk.v3i1.42

Marketplace online adalah salah satu layanan e-commerce yang menjadi tempat bertemunya antara penjual dan pembeli secara online untuk melakukan proses transaksi jual beli. Selama ini proses jual beli di beberapa marketplace di Indonesia tidak dikelola langsung oleh pihak marketplace sehingga mengakibatkan besarnya peluang transaksi menjadi tidak aman. Kelemahan lainnya sistem tidak dapat menangani pengembalian uang jika ternyata penjual tidak mengirimkan barang yang dipesan oleh pembeli. Marketplace yang dimaksud diantaranya : Bejubel, Toko Bagus, Berniaga.com dan Pasar Dino. Pada “Aplikasi Jual Beli Marketplace Online Cinderamata khas Batak” ini sistem mempunyai kemampuan untuk menangani transaksi, dimana transaksi diawasi langsung oleh pihak marketplace sehingga transaksi bisa lebih terorganisir. Ada beberapa fitur yang dimiliki oleh aplikasi ini yaitu, untuk pembeli Cinderamata khas Batak: shopping melalui sistem android dan website, multi transaksi, pengelolaan data transaksi, fasilitas pengiriman barang. Untuk penjual : pengelolaan produk, pengelolaan transaksi, pengiriman barang. Bagi pihak marketplace : moderasi produk, pengelolaan pendaftaran penjual, pengelolaan transaksi, pengelolaan pengiriman , pengelolaan keuntungan, pengelolaan halaman web. Proyek akhir ini dibangun menggunakan metode pengembangan perangkat lunak Waterfall dan UML sebagai alat bantu perancangan sistem. Aplikasi ini diimplementasikan dengan menggunakan bahasa pemrograman PHP dengan serta database MySQL serta software pendukung lainnya.

PEMBUATAN MEDIA PEMBELAJARAN DARING PADA MASA PANDEMI COVID-19 DI SMA MASEHI GBKP BRASTAGI, KABUPATEN KARO Surianto Sitepu; Jimmy Febrynus Naibaho; Naikson Fandier Saragih; Samuel Van Basten Manurung; Indra Kelana Jaya; Alfonsus Situmorang; Imelda Sri Dumayanti; Asaziduhu Gea; Benget Rumahorbo; Marzuki Sinambela; Yolanda Yulianti Pratiwi Rumapea; Margaretha Yohanna; Harlen Gilbert Simanullang; Dandi Daniel Siregar
Jurnal Pengabdian Pada Masyarakat METHABDI Vol 1 No 1 (2021): Jurnal Pengabdian Pada Masyarakat METHABDI
Publisher : Universitas Methodist Indonesia

Learning that uses electronic services as a tool is known in general as e-learning or LMS (Learning Management System). Training on e-learning is realized in Community Service Activities (PKM) as the implementation of the Tri Dharma of Higher Education as well as sharing and contributing ideas and transferring knowledge and technology for teachers and students at SMA Masehi GBKP, Brastagi. This service activity was carried out for a day, with material on Making Online Learning Media during the COVID-19 Pandemic. The material for the activities carried out included making online learning media using Edmodo and Easy Class. The online learning media is one of the effective solutions to facilitate online teaching and learning activities for teachers and students. His presence, which is increasingly easy to find, certainly helps teachers and students stay safe studying at home, without being limited by place and time.

PENGABDIAN KEPADA MASYARAKAT MEMBANGUN MOTIVASI DAN KREATIVITAS BERBISNIS DI DESA LUMBAN PEA TIMUR KABUPATEN TOBA Anton Atno Parluhutan Sinaga; Robinhot Gultom; Sondang N. B. Marbun; Elperida J. Sinurat; Kristanty M. N. Nadapdap; Benget Rumahorbo; Nettina Samosir; Henri Saragih; Samuel V. B. H. Manurung; Maludin Panjaitan; Sahat P. Remus Silalahi; Toman Panggabean
Jurnal Pengabdian Pada Masyarakat METHABDI Vol 2 No 1 (2022): Jurnal Pengabdian Pada Masyarakat METHABDI
Publisher : Universitas Methodist Indonesia

Community Service aims to provide motivation and creativity and do business in Lumban Pea Timur Village, Toba Regency. In this case, the method used is the lecture, discussion, and question and answer method. Through this, many inputs were obtained, regarding the motives of the business being carried out, whether the business or business being carried out was the first attempt to be carried out, whether it had failed in carrying out the business and had been given training to open the business. Finally, through a question and answer session that the community is willing to do business, the motivation is high, but it is necessary to provide training to the community and assistance as well as working capital assistance to the local community.

PERANAN PENDIDIKAN AGAMA KRISTEN DALAM PEMBENTUKAN SPIRITUALITAS MAHASISWA DI ERA REVOLUSI INDUSTRI 4.0 Benget Rumahorbo
Majalah Ilmiah METHODA Vol. 9 No. 3 (2019): Majalah Ilmiah METHODA
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/methoda.Vol9No3.pp132-144

Dalam tulisan ini penulis mengungkapkan peran pendidikan Agama Kristen dalam membentuk karakter mahasiswa di era revolusi industri 4.0, menjadi “dunia” baru bagi kehidupan umat manusia yang memberikan dampak luas dalam tatanan kehidupan manusia, termasuk pendidikan Kristen. Dengan menelusuri kembali peran pendidikan agama Kristen, maka tulisan ini menegaskan bahwa pendidikan Kristen adalah wadah untuk pembentukan dan pengasuhan karakter dan spirtualitas mahasiswa agar kelak dapat menjadi pribadi yang berkarater Kristen yang mampu menyuarakan kebenaran Allah di tengah-tengah berbagai problem yang dihadapi. Selain itu, hal ini juga menunjukkan bagian dari peran pendidikan Kristen dalam mendukung transformasi karakter anak bangsa.

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