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Journal : Operations Research: International Conference Series

Determining The Optimal Portfolio Markowitz Model on Moving Stock Prices Using Brown Motion Geometry Suhariman, Fikrianto; Prabowo, Agung; Wardayani, Ari
Operations Research: International Conference Series Vol. 4 No. 3 (2023): Operations Research International Conference Series (ORICS), September 2023
Publisher : Indonesian Operations Research Association (IORA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/orics.v4i3.253

Abstract

Stock price movements that fluctuate and follow a stochastic process will make it difficult for investors to start investing. For that, we need a stochastic mathematical model. The Brownian geometry motion model is one of the stochastic models that can be used to display the condition of a stock's price movement. Investment is related to the rate of return (return) and the risk obtained. The higher the rate of return obtained, the higher the risk obtained. Therefore, a portfolio calculation is needed, one of which is using the Markowitz model. The Markowitz model can be used to determine the optimal portfolio. The purpose of this study is to model stock prices and form an optimal portfolio. The stock price data used are BBRI, TLKM, and ADRO for the period from 1 July 2021 to 31 August 2022. The results obtained from this study are that there are three portfolio preferences. If investors like high risk to get high returns, then the combined allocation of funds for BBRI, TLKM and ADRO shares is 10.51%, 42.05% and 47.44% respectively. If investors do not like high risk but still want to get a return that is balanced with risk, then the combination of fund allocation for shares of BBRI, TLKM and ADRO is 22.62%, 46.63% and 30.75%, respectively. If the investor chooses minimum risk, the combined allocation of BBRI, TLKM and ADRO shares is 34.73%, 51.21% and 14.06%, respectively.
Life Insurance Aggregate Claims Distribution Model Estimation Yohandoko, Setyo; Prabowo, Agung; Yakubu, Usman Abbas; Wang, Chun
Operations Research: International Conference Series Vol. 4 No. 4 (2023): Operations Research International Conference Series (ORICS), December 2023
Publisher : Indonesian Operations Research Association (IORA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/orics.v4i4.271

Abstract

Risk is a hazard or consequence that can occur in an ongoing process or future events. As the party responsible for assuming and managing risks, the insurance company must be prepared to provide compensation in the event of claims; otherwise, they may face bankruptcy. Hence, it is important to understand the characteristics of risks handled by the insurance company. The risk's characteristics can be analyzed through the distribution model of previous-period claims. The sum of aggregate claims over several periods forms the aggregate claims distribution. The aggregate claims distribution used to determine the amount of pure premium and gross premium that must be obtained by the insurance company. In this research, the determination of distribution model estimation was examined for data cases on aggregate claims of life insurance in Indonesia 2016-2020. The result of this research conduct that the appropriate distribution model is the inverse Gaussian 3P distribution (three parameters).
Analysis of Treatment Period for TB Patients Using The Kaplan-Meier Method Andini, Kiki Andini; Marsanda, Mareta; Wahyuni, Olivia Nindi; Prabowo, Agung
Operations Research: International Conference Series Vol. 6 No. 3 (2025): Operations Research: International Conference Series (ORICS) September 2025
Publisher : Indonesian Operations Research Association (IORA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/orics.v6i3.398

Abstract

This study aims to analyze the duration of treatment for tuberculosis (TB) patients using the Kaplan-Meier method, a non-parametric approach in survival analysis. The research data comes from the Banyumas Regency Health Office for the period March 2023 to November 2023, with a total of 25 patients. The variables analyzed include gender, age, and treatment completion status. The results of the study showed that the chance of incomplete treatment was higher in male patients than in female patients, and the chance of incomplete treatment in patients aged >40 years was higher than in the age group ≤40. The Kaplan-Meier method was used to calculate the survival function, hazard function, and survival time distribution, which provides an in-depth understanding of the dynamics of TB treatment. These findings can assist policymakers in improving the effectiveness of TB treatment in Banyumas Regency.
Co-Authors ., Rusliyawati A.A. Ketut Agung Cahyawan W Abd. Rasyid Syamsuri Abdul Halim, Nurfadhlina Abdul Muis Abdul Muis ABDUL MUIS Abdul Syukur Achmad Ridwan Achmad Ridwan, Achmad adi surya antara, adi surya Adiati, Ani Adinda, Baiq Tami Dwi Aglia, Arla Agus Sugandha Agustawijaya, Didi Supriadi Agustini Tripena Br Surbakti Ahmad Fadli Ahmad Fadli Akbar Idaman Akmalina, Diniatul Al-Ghifari, Muhammad Aziz Abdullah Alfaridzi, Sultan Izbik Riska Alibazah, Terra Dei Alif, Muhammad Ikhsan Amal, Moh Alfi Amar Luthfi Amar Ma’ruf Amir, Supratiwi Amitarwati , Diah Paramita Amitarwati, Diah Paramita Amrullah Andini, Kiki Andini Andoko Andoko, Andoko Andriawan, Deden Andriyani, Mega Shintya Andryani Handrayani Putri Angelica Sitanggang, Tiffany Maria Arditianto, Yanuar Ari Purwanti Ari Wardayani, Ari Arif Wibawa Arrosyid, Muhammad Daffa Arumingtyas, Felinda Ashari, Isya Asri Laksmi Riani Azahra, Astrid Sulistya Azizah, Azkiyatul bin Mamat, Mustafa binti Abdullah Suhaimi, Nurnisaa Br. SB, Agustini Tripena Bukit, Dimas Dimanta Candra candra Choirunisa, Erika Nurul Chun wang Deden Andriawan Dei Alibazah, Terra Delima Sitanggang, Delima Deni Noviana Dewi Ratnasari, Erlinda Dharma Ajie Nur Rois Diki Hidayat Duran, Filbert Dwi Abadi, Medi Trilaksono Eldo, Handry Elisa, Syifa Fadlilah, Fajar Nur Fahreza, Muhammad Naufal Felim, Filbert Felinda Arumningtyas Firdaus, Muhammad Ilham Gea, Radiman Ginting, Riski Titian Govandy Gurning, Rosintan Guswanto, Bambang Hendriya Guswanto, Bambang Herdriya Halawa, Hendi Jaya Halim, Nurfadhlina Abdul Hamisu Kankarofi, Rabiu Hamka, Achmad Chaerul Handinata Handry Eldo Haryadi - Hati, Primanda Berlian Hendriva Guswanto, Bambang Henry Chandra Herol, Herol Heru Suryanto Hoesain M, Ismail HS, Christnatalis Hulu, Yakin Rianto Hutasoit, Feliks Daniel I Wayan Arsa Suteja Ida Wiendijarti Idha Sihwaningrum Ika Safitri Windiarti Immanuel Sinaga, Ferdy Indah, Sika Nur Indra Surjati Irman, Dede Ismawati, Heni Istikanaah, Najmah Itsnaini, Nurul Janna, Nur Jorgi L.Tobing, Stefanus kalfin Kalfin Kamal Prohandani Karpriana, Angga Permadi Kenichiro, Yoshie Ketaren, Faisal Haries Khairunisyah, Sevia Tri Kinanti, Fani Rasya Kireina, Michiko Komalasari Komalasari Kristina Wijayanti Kusumawati, Fajry Ayu Kusumo, Yudhy Widya Laksito, Grida Saktian Lianingsih, Nestia Mala Nurilmala Manalu, Rio Vincent Marulam Manday, Dhanny Rukmana Marsanda, Mareta Mashuri Mashuri Maulida, Ghafira Nur Mawaddah Harahap, Mawaddah Meilia Wulansari Melda Juliza Mendrofa, Fide Moses Miftahurrizqi, Miftahurrizqi Monica Dwi Kusumaningsih Muchtaranda, Ismail Hoesain Mufidah, Afifah Muhamad Awiet Wiedanto Prasetyo Muhammad Haris Qamaruzzaman Muhammad Rizki Muhsin Muhsin Mukarromah, Zulfatul Muliady, Jefry Munahefi, Detalia Noriza Muntafi’ah, Naailah Mustafa Mamat Muzakki, Muhammad Sulthan Naibaho, Sona Halomoan Napitupulu, Agrifa Insani Nazilul Falah, Eliza Nazira, Aisy Azra Nofriadi Nofriadi Norhalisa, Siti Norhayati Novia Novita Eka Chandra Nunung Nurhayati Nur Amel Fitriyan Nur Heri Cahyana Nur Jannah Nurnisaa Binti Abdullah Suhaimi Nuroso, Dwiyani Larasati Putri Oliver Samuel Simanjuntak Pakuan, Gani Muhammad Paramita Amitarwati , Diah Paramita Amitarwati, Diah Pasaribu, Firdaus Hosea Pasaribu, Tessa Vena Melinda Perangin Angin, Despaleri Pirdaus, Dede Irman Polem, Naufal Maulana Pramesty, Elya Arum Prasetya, Riduwan Pratama, Anugrah Robby Prihartini Widiyanti PUJI LESTARI Purba, Rian Elby Putri, Cici Puty, Flower of Your Dreams Yati Rahmadana, Muhammad Akbar Rahmah, Khairunnisa Ramadhan, Abil Ramdhani, Arif Retno Hendariningrum Rifattul Qonita, Dewi Rini Cahyandari Rini Wahyu Sayekti Rita Sari Riyanto Haribowo Robetson, Robetson Rosady, Tiara Rulianah, Nita Ryan Rinaldi Hadistio Saefullah, Rifki Salma Mukhtar, Andina Saputra, Jumadil Sari Nurahmandhani, Ambar Sari, Fitra Bona Sehah Sehah Sembiring, Icha Dwi Putri Br Shihah, Hanna Dzawish Siahaan, Assana Dea Sidi, Pramono Sidiq, Fahmi Simbolon, Marco Duran Sinaga, Alfrendo Sinaga, Bram Dimpos Fajar Sinarpaska, Stefany Mahatma Siregar, Saut Dohot Soemitro Padmowijoto Sri Endang Rahayu Sudarmin Sudarmin Suhaimi, Nurnisaa binti Abdullah Suhariman, Fikrianto Sukono Sukono Sulistyowati, Tri Sulistyowati Sulthan Izbik Riska Alfaridzi Sumita Wardani Sunoko , Ray Aksan Supriyanto Supriyanto Supriyono Supriyono Suratno Suratno Suroto suroto Suroto Suroto Suroto Suroto Susilawati , Susi Sutami Syaiful Anwar, Agus Setiadi, Suwali, Syamsul Arifin Tambunan, Fiktor Januari Tar Muhammad Raja Gunung Tarigan, Nathanael Atan Baskita Tarigan, Perwira Togar Timoteus Gultom Tri Ayu Mulyani Tri Sulistyowati Triandi Triandi Tripena, Agustina Uswatun Chasanah Velicia, Lorraine Putri Vimelia, Willen Wahyuni, Nur Maulida Wahyuni, Olivia Nindi Wijaya, Frederico Wijaya, Sky Xavier Wijayanti, Marwah Daud Wilbert Solo, Eddrick Wisnalmawati Wisnalmawati Yakubu, Usman Abbas Yansyah, Deli Yanti, Voni Yasmin, Arla Aglia Yaza Azzahara Ulyana Yelia, Cica Yenni Sri Utami Yenni Sri Utami, Yenni Sri Yennimar, Yennimar Yhenis Apriliana Yohana Vivit Yohandoko, Setyo Yohandoko, Setyo Luthfi Okta Yuningsih, Siti Hadiaty Zaenal Bachruddin Zahra, Alika Zinedine Amalia Noor Mauludy Reihan Zulfahmi, Muhammad Hafidz