Russel, Edwin and Wamiliana, Wamiliana and Warsono, Warsono and Nairobi, Nairobi and Usman, Mustofa and Elfaki, Faiz A. M. (2023) Analysis Multivariate Time Series Using State Space Model for Forecasting Inflation inSome Sectors of Economy in Indonesia. Science and Technology Indonesia, 8 (1). pp. 144-150. ISSN e -ISSN:2580-4391 p -ISSN:2580-4405

Usman, Mustofa and Komarudin, Muhamad and Sarida, Munti and Wamiliana, Wamiliana and Russel, Edwin and Kufepaksi, Mahatma and Alam, Iskandar Ali and Elfaki, Faiz A. M. (2022) Analysis of Some Variable Energy Companies by Using VAR(p)-GARCH(r,s) Model: Study From Energy Companies of Qatar over the Years 2015–2022. International Journal of Energy Economics and Policy, 12 (5). pp. 178-191. ISSN 2146-4553

Usman, Mustofa and Komarudin, Muhamad and Sarida, Munti and Wamiliana, Wamiliana and Russel, Edwin and Kufepaksi, Mahatma and Alam, Iskandar Ali and Elfaki, Faiz A. M. (2022) Analysis of Some Variable Energy Companies by Using VAR(p)-GARCH(r,s) Model : Study From Energy Companies of Qatar over the Years 2015–2022. International Journal of Energy Economics and Policy, 12 (5). pp. 178-191. ISSN 2146-4553

Usman, Mustofa and Russel, Edwin and Warsono, Warsono and Wamiliana, Wamiliana and Amanto, Amanto and Fitriani, Fitriani and Elfaki, Faiz A. M. (2020) CAUSAL MODELING AND DECOMPOSITION OF CORRELATION STUDY: INDICATORS OF AN INDONESIAN ELECTRICITY COMPANY. JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY, 55 (6). pp. 1-12. ISSN issn.0258-2724.54.4.6

Warsono, Warsono and Russel, Edwin and Wamiliana, Wamiliana and Widiarti, Widiarti and Usman, Mustofa and Elfaki, Faiz A. M. (2020) Causal Modeling of the Effect of Foreign Direct Investment, Industry Growth and Energy Use to Carbon Dioxide Emissions. International Journal of Energy Economics and Policy, 10 (3). pp. 348-354. ISSN 2146-4553

Usman, Mustofa and Ambarwati, Riyama and Barusman, M Yusuf S and Elfaki, Faiz A. M. and Widiarti, Widiarti (2018) Modeling and Forecasting Time Series Data By EGARCH Model. Journal of Engineering and Applied Sciences, 13 (9). pp. 2593-2602. ISSN 1818-7803 (Online)

Widiarti, Widiarti and Usman, Mustofa and Anwar, Rohimatul and Russel, Edwin and Elfaki, Faiz A. M. (2017) APPLICATION OF GENERALIZED AUTOREGRESSIVE CONDITIONAL HETEROSCEDASTICITY (GARCH) MODEL TO DETERMINE THE VALUE AT RISK ON THE ANALYSIS OF RISK INVESTMENT. Science International Lahore, 29 (5). pp. 1147-1153. ISSN 1013-5316

Usman, Mustofa and Fatin, Dhia Fadhilah and Barusman, M Yusuf S and Elfaki, Faiz A. M. and Widiarti, Widiarti (2017) Application of Vector Error Correction Model (VECM) and Impulse Response Function for Analysis Data Index of Farmers’ Terms of Trade. Indian Journal of Science and Technology, 10 (19). pp. 1-14. ISSN 0974-5645

Warsono, Warsono and Kurniasari, Dian and Widiarti, Widiarti and Usman, Mustofa and Elfaki, Faiz A. M. (2017) The Moment Generating Function of the Four Parameter Generalized F Distribution and Related Generalized Distributions. Global Journal of Pure and Applied Mathematics, 13 (3). pp. 941-956. ISSN 0973-1768

Kharimah, Faiga and Usman, Mustofa and Widiarti, Widiarti and Elfaki, Faiz A. M. (2015) TIME SERIES MODELING AND FORECASTING OF THE CONSUMER PRICE INDEX BANDAR LAMPUNG. Science International, 27 (5(B)). pp. 4619-4624. ISSN 1013-5316

Usman, Mustofa and Widiarti, Widiarti and Ruswandi, Rudi and Elfaki, Faiz A. M. and Daoud, Jamal I (2015) HIGHER DIMENSIONAL LOG-LINEAR MODEL AND ITS APPLICATION. Science International Lahore, 27 (5). pp. 3989-3993. ISSN 1013-5316

Wamiliana, Wamiliana and Elfaki, Faiz A. M. and Faisol, Ahmad and Usman, Mustofa and Evi Lestari, Isna (2015) Determining The Pattern for 1- fault Tolerant Hamiltonian Cycle From Generalized Petersen Graph P(n,k). IJCSNS International Journal of Computer Science and Network Security, 15 (4). pp. 26-30. ISSN 1738-7906

Usman, Mustofa and Elfaki, Faiz A. M. and Wamiliana, Wamiliana and Fauzan Inu, M. and Daoud, Jamal I (2015) STATISTICAL MODEL AND PREDICTION OF PINEAPPLE PLANT WEIGHT. Science International, 27 (2). pp. 937-943. ISSN 1013-5316

Wamiliana, Wamiliana and Usman, Mustofa and Azram, M and Elfaki, Faiz A. M. and Hijriani, Astria and panditatwa, Pandya (2015) Adaptive Minimum Error Least Significant Bit Replacement Method for Steganography Using JPG/JPEG and PNG Files. Science International (Lahore), 27 (6). pp. 4987-4990. ISSN 1013-5316

Usman, Mustofa and Barusman, M Yusuf S and Elfaki, Faiz A. M. and Daoud, Jamal I (2013) Profile Analysis of Population Based on Age-Group in Sumatra. Middle-East Journal of Scientific Research 13 (Mathematical Applications in Engineering), 13 (1). pp. 116-123. ISSN 1990-9233

Usman, Mustofa and Elfaki, Faiz A. M. and Daoud, Jamal I (2013) Ratio of Linear Function of Parameters and Testing Hypothesis of the Combination Two Split Plot Designs. Middle-East Journal of Scientific Research 13 (Mathematical Applications in Engineering), 13 (1). pp. 109-115. ISSN 1990-9233

Usman, Mustofa and Hendarman, Hendarman and Daoud, Jamal I and Elfaki, Faiz A. M. (2012) ANALYSIS AND MODELING OF EDUCATION PARTICIPATION INDEX (EPI) IN INDONESIA FROM 2003-2008. Journal of Technical Education and Training (JTET), 4 (2). pp. 52-62. ISSN 2229-8932

Elfaki, Faiz A. M. and Azram, M and Usman, Mustofa (2012) Parametric Cox’s Model for Partly Interval-Censored Data with Application to AIDS Studies. International Journal of Applied Physics and Mathematics, 2 (5). pp. 352-354.

Usman, Mustofa and NJuho, Peter and Elfaki, Faiz A. M. and Daoud, Jamal I (2011) The Combination of Several RCBDs. Australian Journal of Basic and Applied Sciences, 5 (4). pp. 67-75. ISSN ISSN 1991-8178

Usman, Mustofa and Njuho, Peter and Elfaki, Faiz A. M. and Daoud, Jamal I (2011) The Combination of Several RCBDs. Australian Journal of Basic and Applied Sciences,, 5 (4). pp. 67-75. ISSN 1991-8178

Elfaki, Faiz A. M. and Daud, J and Azram, M and Usman, Mustofa (2011) Statistical Process Control For Failure Crushing Time Data Using Competing Risks Model. Australian Journal of Basic and Applied Sciences, 5 (3). pp. 28-37. ISSN 1991-8178

Usman, Mustofa and Ruswandi, Rudi and Daoud, Jamal I and Elfaki, Faiz A. M. (2008) BETA HAT MODEL AND ITS APPLICATION. In: International Conference On Quantitative Methods Used In Economics and Bussiness, 15-17 Oktober 2008, Bandar Lampung, Indonesia.

Usman, Mustofa and Elfaki, Faiz A. M. and Daoud, Jamal I (2008) EXPERIMENTAL DESIGN FOR SCIENTISTS AND ENGINEERS. International Islamic University Malaysia Press, Kuala Lupur, Malaysia. ISBN ISBN 978-983-3855-34-6

Warsono, Warsono and Kurniasari, Dian and Widiarti, Widiarti and Usman, Mustofa and Elfaki, Faiz A. M. the moment generating function of the four parameter generalized f-distribution and related generalized. Global Journal of Pure and Applied Mathematics, 13 (3). ISSN 0973-1768