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All Journal JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Zero : Jurnal Sains, Matematika, dan Terapan Data Science: Journal of Computing and Applied Informatics Journal of Saintech Transfer TECHSI - Jurnal Teknik Informatika
Sri Melvani Hardi
Universitas Sumatera Utara
Agriculture, Biological Sciences & Forestry Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Engineering Mathematics Physics Other

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Implementation of Expert System for Detection Periodontitis Disease Using Fuzzy Logic Sri Melvani Hardi; Deliyana Siagian; Syahril Efendi
ZERO: Jurnal Sains, Matematika dan Terapan Vol 4, No 2 (2020): Zero: Jurnal Sains Matematika dan Terapan
Publisher : UIN Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/zero.v4i2.8993

Abstract

The wellbeing area is one region that requires innovation in technology. Wellbeing is for sure a costly thing for people. In this manner it takes individual affectability to care for it. One of the solid organs that people frequently disregard is teeth and mouth. Periodontitis is a dental and oral illness that is frequently grumbled of by numerous individuals. In any case, as of recently, periodontitis has not been a critical worry of Indonesian individuals. It is important to give data and comprehension about periodontitis side effects to dynamic smokers by making an expert system. A system is expected to distinguish the underlying indications and straightforwardly beat these side effects. The expert system is a part of Computer Science that fills in as a spot to move information from specialists so computers can have the aptitude to tackle issues utilizing these specialists' information. The technique utilized in this examination is the Fuzzy Logic strategy. This present investigation's eventual outcomes are analytic outcomes from the fluffy rationale technique, where the exactness of the Fuzzy Logic strategy is 93.33%.
ANALISIS MAPPING PADA PARTIALLY MAPPED CROSSOVER DALAM ALGORITMA GENETIKA PADA TRAVELLING SALESMAN PROBLEM Sri Melvani Hardi; Muhammad Zarlis; Erna Budiarti
TECHSI - Jurnal Teknik Informatika Vol 6, No 1 (2014)
Publisher : Teknik Informatika Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/techsi.v6i1.167

Abstract

Traveling salesman problem is the problem how salesman can set tour to visit a number of cities which known distance of the city with other cities so that the distance is the minimum distance where the salesman can only visit the city exactly once. To resolve TSP problem, there are many optimization methods that can be used one of them which is a genetic algorithm. Genetic algorithm is an algorithm which have same search method as a mechanism of biological evolution. Crossover is a genetic operator which the process of exchanging some genes on chromosome first parent with the majority of genes in the two parent chromosomes to form a new chromosome .One of the crossover method used in solving traveling salesman problem is partially mapped crossover ( PMX ),where the process mapping of PMX are determines the variation exchange of genes on chromosomes that affect the achievement of best fitness on 2 chromosome. In this study the first variation (PMX variation I) is designed using random point position while in the second variation (PMX variation II) is designed by using the change in the mapping area. Testing in this study using data from the Travelling Salesman Problem Library (TSPLIB). The result obtained that PMX which designed by using randomly cut position have best fittness better than PMX is designed by changing the position of the mapping area and if it compared with the general form of PMX with the same position cut point.
IMPLEMENTASI KRIPTOGRAFI HIBRID DENGAN ALGORITMA ELGAMAL DAN ALGORITMA ONETIME PAD(OTP) DALAM PENGAMANAN FILE AUDIO BERBASIS DESKTOP Sri Melvani Hardi; Daniel Hamonangan; Muahmmad Zarlis
TECHSI - Jurnal Teknik Informatika Vol 10, No 2 (2018)
Publisher : Teknik Informatika Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/techsi.v10i2.903

Abstract

Audio merupakan salah satu cara untuk menyampaikan informasi. Bertukar informasi audio dapat dilakukan dengan mudah pada saat ini. Namun hal ini menyebabkan informasi audio yang bersifat pribadi ataupun rahasia menjadi tidak aman. Maka dari itu diciptakanlah sebuah sistem pada desktop yang mampu mengamankan file audio dengan menggunakan algoritma One-Time Pad dan algoritma ElGamal. Algoritma One-Time Pad merupakan algoritma yang sangat aman dalam mengamankan data audio namun memiliki kerentanan didalam kebocoran informasi kunci maka dibutuhkan algoritma ElGamal yang dapat mencegah kebocoran informasi kunci. Berdasarkan pengujian didapatkan hasil bahwa cepat lambatnya waktu proses enkripsi dan proses dekripsi, dipengaruhi oleh ukuran data file audio .Semakin besar data file audio tersebut maka semakin lambat waktu proses yang dilakukan. Hasil dari sistem ini berupa file audio yang terenkripsi, file kunci OTP terenkripsi yang dapat mengamankan data.
Recommendation System of Component Selection for Aquascape With SMART Method Sri Melvani Hardi; ivan jaya
JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Vol 6, No 1 (2022): Issues July 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jite.v6i1.7084

Abstract

AbstractThe increasing enthusiasm of aquascape hobbyists is one of the factors in the development of the beauty industry of artificial underwater ecosystems in the aquarium. The aesthetic value offered by aquascape is one of the allures for its connoisseurs. The art of organizing ecosystems in water is a simple definition of an aquascape. The complexity of the arrangement can then be described through the presence of various themes. The selection of tools, flora and fauna, and other ornaments to form a unified ecosystem are things that are of concern so that an ecosystem in artificial water has good aesthetic value and can be categorized in a certain theme. By using a decision support system (DSS) or decision-making system, the results can provide better decisions and minimize the possibility of errors. One method of decision making in the scope of decision support system (DSS) or decision making system is Simple Multi Attribute Rating Technique (SMART), where this method can determine product recommendations based on several product variants offered as a form of marketing analysis. This method is able to provide recommendations for more than one decision and provide results with the best accuracy. System testing was conducted to 50 users and it was found that the recommendation system based on the questionnaire application was able to provide a good percentage of conformity between the user's wishes and the recommendations given. That is, 51% of correspondents rated it very appropriate, 27.5% of correspondents rated accordingly, 19.5% of correspondents rated neutral, and only 2% of correspondents rated it inappropriateKeywords: Aquascape, Decision Support System, SMART, Recommendation
Daycare Recommendation System Using Fuzzy Logic Method and Haversine Formula (Case Study : Medan City) Br Sirait, Friska Pegrisentia; Hayatunnufus, Hayatunnufus; Hardi, Sri Melvani
Data Science: Journal of Computing and Applied Informatics Vol. 8 No. 1 (2024): Data Science: Journal of Computing and Applied Informatics (JoCAI)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jocai.v8.i1-14354

Abstract

The problem currently faced is the lack of trust from some parents towards daycare due to the lack of detailed information about daycare and the lack of attractive promotional media for working parents to entrust their children. Therefore, a decision support system is needed that uses the fuzzy logic method and haversine formula to assist in decision making when choosing the best alternative in daycare selection. The criteria used in this study were price, distance, quantity of caregivers, quality of caregivers, and facilities and infrastructure. The results of this study indicate that the system calculations are in accordance with manual calculations and the results of system testing prove that this system percieved of usefulness it has an actual score of 93.69% (0.9369), in terms of percieved ease of use it has an actual score of 93.21% (0, 9321), in terms of attitude toward using it has an actual score of 92.68% (0.9368) and in terms of behavior in use it has an actual score of 91.19% (0.9119). This was obtained by distributing questionnaires to 28 users (parents) during system testing.
Differentiated learning with information technology for teachers at SMA Negeri 5 Padangsidimpuan Jaya, Ivan; Hardi, Sri Melvani; Elveny, Marischa
Journal of Saintech Transfer Vol. 7 No. 2 (2024): Journal of Saintech Transfer
Publisher : Talenta Publisher Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jst.v7i2.14505

Abstract

Differentiated learning aims to improve classroom learning by accommodating students' diverse personalities and backgrounds, enabling effective and efficient participation. This community service provides training for teachers at SMA Negeri 5 Padangsidimpuan on differentiated learning methods using information technology through a blended learning approach. The training included pre- and post-tests to evaluate teachers' knowledge and skills. Results showed a significant improvement in teachers' ability to use interactive applications such as Padlet, Nearpod, Classcraft, and Kahoot, with post-test scores indicating an average increase of 20% compared to pre-test scores. Statistical analysis using the T-test confirmed the enhancement, with p-values below 0.05 for differentiated learning concepts and application usage. Teachers reported Kahoot as the most preferred application, followed by Padlet, Classcraft, and Nearpod. The study concludes that designing and implementing diverse instructional strategies using interactive media tailored to students' needs fosters meaningful learning experiences and improves teaching outcomes. Future efforts will include sustained support for teachers and the development of technology-focused learning modules.
Co-Authors Br Sirait, Friska Pegrisentia Daniel Hamonangan Deliyana Siagian Efendi, Syahril Erna Budiarti Hamonangan, Daniel Hayatunnufus Hayatunnufus Ivan Jaya Jaya, Ivan Marischa Elveny, Marischa Muahmmad Zarlis Muhammad Zarlis Muhammad Zarlis, Muhammad Zarlis, Muahmmad