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All Journal Jurnal Sains Matematika dan Statistika Unisda Journal of Mathematics and Computer Science (UJMC) Jurnal Ilmiah Matematika dan Pendidikan Matematika (JMP) Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika
Dian Pratama
Universitas Nahdlatul Ulama Purwokerto
Computer Science & IT Decision Sciences, Operations Research & Management Education Mathematics

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STRUKTUR IMAGE DAN PRE-IMAGE HOMOMORFISMA PADA TRANSLASI RING FUZZY INTUITIONISTIK Dian Pratama
Jurnal Ilmiah Matematika dan Pendidikan Matematika Vol 11 No 1 (2019): Jurnal Ilmiah Matematika dan Pendidikan Matematika
Publisher : Jurusan Matematika FMIPA Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jmp.2020.12.1.1937

Abstract

A set that is characterized by membership function and a non-membership function with the sum of both at intervals of 0 to 1 is called intuitionistik fuzzy set.. When it’s applied in ring’s theory, it will called intuitionistic fuzzy ring. In this research,if the topics is membership fuction and non-membership function then there are translates operator. This operator only changes the values of the membership and non-membership function while the properties are fixed. This journal discussed the structure of image ad pre-image homomorphism of translates on intuitionistic fuzzy rings. The result obtained that the structure of image and pre-image is also intuitionistic fuzzy rings. Full Article
OPERATOR ⊞A and ⊠A ON INTUITIONISTIC FUZZY RING Dian Pratama
Jurnal Ilmiah Matematika dan Pendidikan Matematika Vol 12 No 1 (2020): Jurnal Ilmiah Matematika dan Pendidikan Matematika
Publisher : Jurusan Matematika FMIPA Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jmp.2020.12.1.2613

Abstract

Intuitionistic fuzzy sets is a sets that are characterized by membership and non-membership function which sum is less than one. When applied to ring theory, it will called intuitionistic fuzzy rings. The fuzzy set operator is a mapping between the membership function and the interval [0,1]. In this study, we will describe properties of operator and in intuitionistic fuzzy rings. The characteristics that will be studied include the structure of and if A is an intuitive and fuzzy ring and vice versa.
Penentuan Nilai Opsi Saham Karyawan (OSK) dengan Metode Binomial Enhanced American Noor Sofiyati; Dian Pratama; Dwiani Listya Kartika
Jurnal Sains Matematika dan Statistika Vol 8, No 2 (2022): JSMS Juli 2022
Publisher : Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/jsms.v8i2.17016

Abstract

Opsi Saham Karyawan (OSK) merupakan opsi beli terhadap saham perusahaan sebagai bonus yang diberikan oleh perusahaan kepada karyawannya. OSK memiliki waktu tunggu atau vesting period. Karyawan pemegang opsi tidak bisa melaksanakan opsi mereka di dalam selang waktu tunggu. Penelitian ini bertujuan menentukan nilai OSK menggunakan model Binomial Enhance American dengan tidak memperhitungkan nilai opsi saham hari sebelumnya dan bergantung pada parameter-parameter yang telah ditentukan. Hasil implementasi dari model binomial adalah diperoleh nilai batas exercise setelah waktu tunggu sebagai pertimbangan pemegang opsi untuk melaksanakan opsinya.
GENERALISASI OPERATOR ⊞_n dan ⊠_n PADA SUBGRUP FUZZY INTUITIONISTIK Chumaedi Sugihandardji; Ari Wardayani; Dian Pratama
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 3 No. 2 (2022): Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistik
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/lb.v3i2.125

Abstract

Intuitionistic fuzzy sets is an extension of the fuzzy set with the characteristics of each element having a degree of membership and non-membership which when added up is less than one. If applied to group theory, it will called intuitionistic fuzzy group. Operators on fuzzy sets associate membership functions (non-membership) with intervals [0,1]. This study examines the general form of operators  and  for   in intuitionistic fuzzy groups. The properties to be studied are the structure of of  and  from an intuitionistic fuzzy group A
Penentuan Fase dan Waktu Siklus Optimum Simpang Bersinyal dengan Graf Kompatibel dan Webster Modifikasi (Studi Kasus: Persimpangan Sokaraja, Banyumas) Dian Pratama; Kukuh Rahayu; Ambar Winarni
UJMC (Unisda Journal of Mathematics and Computer Science) Vol 11 No 2 (2025): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department, Faculty of Sciences and Technology Unisda Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/ujmc.v11i2.12058

Abstract

Traffic congestion at signalized intersections can be reduced through proper signal timing. This study aims to optimize traffic-signal settings at the Sokaraja intersection, Banyumas Regency, using a directed compatibility graph and a modified Webster method. Primary data collected from October 2025 to Desember 2025 include intersection geometry (approach widths), existing signal timings, and traffic volumes (heavy vehicles, light vehicles, and motorcycles) observed over two weeks during morning, midday, and afternoon periods. Traffic movements were modeled using a directed compatibility graph to identify non-conflicting movements that can run simultaneously; weighting based on approach width and traffic volume was then used to form phases and allocate green splits. The modified Webster calculation yields an optimal cycle length of 149 s for the maximum-demand condition (and 35 s for the minimum-demand condition). Compared with field timings (e.g., red/green 117/70 s on Jl Jendral Soedirman and 137/22 s on Jl Ajibarang–Secang), the recommended timings under maximum demand are 50/86 s and 81/54 s, respectively. Effectiveness evaluation indicates that the red intervals on Jl Jendral Soedirman and Jl Ajibarang–Secang are longer than required, while the other approaches are closer to the optimized settings. These results provide a practical basis for signal retiming and for developing more adaptive control at the Sokaraja intersection.
Co-Authors Ambar Winarni Ari Wardayani, Ari Chumaedi Sugihandardji Dwiani Listya Kartika Kukuh Rahayu noor Sofiyati