Analysis of GDP in Countries allied to Indonesia using a Combination of the GSTAR Model and Verification using Statistical Quality Control
Nur’ainul Miftahul Huda, Nurfitri Imro’ah, Tarisa Umairah, Dewi Setyo Utami, Nani Fitria Arini Abstract The Generalized Space-Time Autoregressive (GSTAR) model is used to model GDP growth rates in Indonesia, Malaysia, Singapore, and Brunei Darussalam, allied countries. Southeast Asian countries have cultural and historical linkages and often share economic tendencies. GSTAR is used because it […]
Modeling and Estimating GARCH-X and Realized GARCH Using ARWM and GRG Methods
Didit Budi Nugroho, Melina Tito Wijaya, Hanna Arini Parhusip Abstract This study evaluates the fitting performance of GARCH-X(1,1) and RealGARCH(1,1) models, which are extensions of GARCH(1,1) model by adding the Realized Kernel measure as an exogenous component, on real data, namely the Financial Times Stock Exchange 100 and Hang Seng stock indices over the […]
Solving Traveling Salesman Problem Art Using Clustered Traveling Salesman Problem
Nadya Sulistia, Irwansyah Irwansyah, Marwan Marwan Abstract Traveling Salesman Problem (TSP) is a method of finding the minimum tour in a graph. In line with the development of TSP theory and its application, TSP Art shows up as the implementation of mathematics in art. TSP Art is an art which represented in a graph. […]
Dual Reciprocity Boundary Element Method for Steady Infiltration Problems from Furrow Irrigation Channels in Heterogeneous Soil
Muhammad Manaqib, Yanne Irene, Muhaza Liebenlito, Rizki Aulia Abstract This research discusses solving the problem of infiltration of furrow irrigation channels in heterogeneous soil containing five soil layers using the Dual Reciprocity Boundary Element Method (DRBEM) numerical method. The mathematical infiltration model in furrow irrigation channels takes the form of the Richard Equation, which […]