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All Journal Jurnal Sains Dasar Jurnal Ilmu Kesehatan Duta Gama Klaten Jurnal Pendidikan Anak JEE (Jurnal Edukasi Ekobis) PAUDIA: JURNAL PENELITIAN DALAM BIDANG PENDIDIKAN ANAK USIA DINI ELECTRON EKSAKTA : Jurnal Penelitian dan Pembelajaran MIPA Social, Humanities, and Educational Studies (SHEs): Conference Series MMJ (Mahakam Midwifery Journal) Jurnal Ekonomi Bisnis Indonesia Jurnal Kebidanan Indonesia Jurnal Pengabdian dan Pengembangan Masyarakat Borneo Student Research (BSR) Jurnal Ilmiah ASET Jurnal Pembelajaran Fisika JURNAL ADMINISTRASI DAN PERKANTORAN MODERN Jurnal Natural Indonesian Journal of Midwifery (IJM) PENDIS (Jurnal Pendidikan dan Ilmu Sosial) Jurnal Elemen Kimia Jurnal Kajian dan Terapan Matematika
Dwi Lestari
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Library & Information Science Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Other

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Journal : Jurnal Sains Dasar

 1 
The password agreement method based on matrix operation over Min-Plus algebra for safety of secret information sending Musthofa Musthofa; Dwi Lestari
Jurnal Sains Dasar Vol 3, No 1 (2014): April 2014
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (208.648 KB) | DOI: 10.21831/jsd.v3i1.2782

Abstract

Key agreement protocol is a method in cryptography. Key agreement protocol is used to overcome the problem of sending secret information over communication lines. A secret key, called password, is needed to secure t he information. Both parties who exchange confidential information must agree on the same key. In this method, both parties exchange mutual general parameters that everyone can see, however from the general parameters the same passwords can be formed and not publicly known. One method that has been used is applying a series of matrix multiplication operation defined over a finite field. In this study, we constructed an algorithm in the form of a key agreement protocol that can be used in the password agreement method which the level of security based on algebraic problem of matrix operation over Z- min plus algebra. Min Plus algebra over Z, that is Z È { + ¥ } with Z is the set of all integers equipped with the minimum and addition operation,  is called idempotent semiring. The results showed that the application of matrix operation over min plus algebra can be used as key agreement protocol in securing secret information.   Key words: secret information, password, Min-Plus algebra
MATHEMATIC MODEL FOR SITY BUS SCHEDULING IN YOGYAKARTA Sahid Sahid; Fitriana Yuli S; Dwi Lestari
Jurnal Sains Dasar Vol 4, No 2 (2015): October 2015
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (76.809 KB) | DOI: 10.21831/jsd.v4i2.9085

Abstract

Various methods can be used to construct a mathematical model of the transportation problems. One model that can be used is a linear model. Several studies have used a linear model to get the schedule and the optimal route of bus trips. This research will build a mathematical model of a city bus transportation problems in DIY using linear models. Linear model is built to get the condition density city bus passengers on shifts respectively that morning, noon, and evening. After finding a suitable model, applied to the bus passengers data in Yogyakarta. From these results it can be seen the optimum conditions in terms of density, because the condition of the city bus at this time that quiet enthusiasts. Besides, the optimum density at each shift in the morning is 11 passengers, 10 passengers during the day, and evening 9 passengers. Keywords: transportation problems, the linear model, the optimal route, density
Eksistensi dan ketunggalan solusi persamaan panas Eminugroho Ratna Sari; Dwi Lestari; Fitriana Yuli Saptaningtyas
Jurnal Sains Dasar Vol 2, No 2 (2013): October 2013
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jsd.v2i2.3297

Abstract

Abstrak Suatu persamaan diferensial parsial belum tentu mempunyai solusi tunggal. Sehingga perlu diselidiki kapan untuk suatu persamaan diferensial parsial yang dilengkapi nilai awal dan syarat batas pasti mempunyai solusi. Lebih lanjut, apakah solusinya tunggal. Pada makalah ini akan dibahas eksistensi dan ketunggalan solusipersamaan diferensial parsial untuk persamaan panas. Pembahasan akan dimulai dari pembentukan persamaan panas. Selanjutnya akan diselidiki eksistensi dan ketunggalan solusinya yang dilengkapi dengan syarat awal dan batas.   Kata kunci: eksistensi, ketunggalan, solusi, persamaan panas
Co-Authors Albertus Djoko Lesmono Amalia Rahmi Nasution Ambaria Nur Aris Sunantyo Bambang Sumarno H.M. Bilal Ma'ruf Budiyono , Cecep Pratama Cindy Aldona Cornelia Budimarwanti Dedi Atunggal Desri Amrainum Desy Fitriani Dimas Pamungkas Dita Yuzianah Donny Fransiskus Manalu, Donny Fransiskus Edy Purnomo Elin Yulinah Sukandar Eminugroho Ratna Sari Faiza Adinda Fatimah Noor Isnaini Fatma Salsabila Fitriana Yuli S Fitriana Yuli Saptaningtyas Hana Ika Safitri Heliani, Leni Sophia Hesti Endah Lestari Husna Arifah Isnaniah Isnaniah Marianne Marianne Maryani Maryani Metri Utami Krahayon Mila Karmila Muhammad Abu Fattahillah Muhammad Jumnahdi Muniroh Munawar Murwati . Musthofa Musthofa Mutiara Ashifa Nabila Inne Azri Nanik Khurnia Neng Fisheri Kurniati Nurdin Nurdin Nurrohmat Widjajanti Parseno Parseno Putri Kusumawati Priyono Rohmah Nur Istiqomah Rosnani Nasution Sahid Sahid Shinta Aulia Siallagan, Dorsinta Suhaji Suhaji Ulinnuha, Hilmiyati Wasiyem, Wasiyem Zahrani Nabilah Zakiah Zakiah