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All Journal JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI GRADIEN Edumatsains Panrita Abdi - Jurnal Pengabdian pada Masyarakat BAREKENG: Jurnal Ilmu Matematika dan Terapan JURNAL PENGABDI Teorema: Teori dan Riset Matematika Jurnal Pengabdian Masyarakat Bumi Raflesia Sainstek : Jurnal Sains dan Teknologi Jurnal Berdaya Mandiri LOSARI: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat TRIBUTE: JOURNAL OF COMMUNITY SERVICES Mathematical Journal of Modelling and Forecasting Jurnal Integritas Serasan Sekundang Indonesian Journal of Statistics and Its Applications
Siska Yosmar
Department Of Mathematics, Faculty Of Mathematics And Natural Sciences, Bengkulu University, Indonesia
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ANALYSIS OF THE ANALYTIC HIERARCHY PROCESS (AHP) METHOD IN DETERMINING PRIORITY DECISIONS FOR HANDLING STUNTING IN BENGKULU PROVINCE Rewan Jayadi; Ramya Rachmawati; Siska Yosmar
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5577

Abstract

Statistical Processing Data 2021 shows that technical efficiency in stunting intervention costs in Bengkulu Province always achieves efficient results in the technical system, however, for that reason, it is technically inefficient in costs. This research aims to analyze the Analytical Hierarchy Process (AHP) method in deciding to determine priorities for handling stunting in Bengkulu Province, which will then get results according to the level of needs of each district/city. This study used the AHP method to determine priorities for handling stunting by collecting primary data directly from respondents, namely the Bengkulu Province Health Service. Validity and reliability tests are used before researching to obtain good research results suitable for development. The results of the consistency test showed that the Consistency Ratio (CR) value for each criterion and the alternative was, which means that the filling and results of the questionnaire for respondents had obtained results that met the requirements. The results of the analysis of preferences for criteria/alternatives show that the main priority in making decisions for handling stunting in Bengkulu Province is North Bengkulu as the main priority, followed by South Bengkulu, Seluma, Rejang Lebong, Kepahiang, Central Bengkulu, Bengkulu, Mukomuko, Lebong, and finally Kaur. Keywords: Analytic Hierarchy Process, Consistency Ratio, stunting, Bengkulu Province.
LQ45 Stock Portfolio Selection using Black-Litterman Model in Pandemic Time Covid-19 Siska Yosmar; S Damayanti; S Febrika
Indonesian Journal of Statistics and Applications Vol 5 No 2 (2021)
Publisher : Departemen Statistika, IPB University dengan Forum Perguruan Tinggi Statistika (FORSTAT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/ijsa.v5i2p343-354

Abstract

The world was shocked by the emergence of a virus that spread very quickly to several countries including Indonesia at the end of 2019. This virus infection is called Corona Virus Disease 2019 (Covid-19). The outbreak of Covid-19 not only threatens human lives but also disrupts various economic, financial, and business activities, especially in Indonesia. A stock portfolio is a collection of financial assets in a unit that is held or created by an investor, investment company, or financial institution. The Black-Litterman model of the stock portfolio is a portfolio model that involves the CAPM equilibrium return and investor views. The purpose of this study is to determine the stock portfolio with the Black-Litterman model using company data listed in the LQ45 stock index from January 2020 to June 2020. Four of the twenty-nine LQ45 stocks were selected as assets in the stock portfolio. The stock portfolio containing the four stocks, namely ICBP, KLBF, MNCN, and TLKM with the Black-Litterman model resulted in an expected return of 2.07% and a risk of 2.82%.
PENGUATAN KONSEP MITIGASI BENCANA GEMPA BUMI DAN TSUNAMI DI SDN 07 KECAMATAN TELUK SEGARA KOTA BENGKULU Zulfia Memi Mayasari; Nur Afandi; Siska Yosmar; Lidya Savitri; Meca Nerdika; Fajri Ramadan; Nova Asri Ramdhani
Panrita Abdi - Jurnal Pengabdian pada Masyarakat Vol. 8 No. 4 (2024): Jurnal Panrita Abdi - Oktober 2024
Publisher : LP2M Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/pa.v8i4.23175

Abstract

SDN 07 Bengkulu City is an elementary school located in Teluk Segara District which is quite close to the beach. Because of this position factor, this school is very vulnerable to risks of earthquake and tsunami disasters. Therefore, this school must have preparedness in  face of disasters that can occur at any time. In fact, disaster mitigation education in this school is very minimal. In addition, this school does not yet have the necessary evacuation routes when a disaster strikes. The purpose of this community service is to create an evacuation route in SDN 07 Bengkulu City and increase the awareness of the residents of SDN 07 schools against earthquake and tsunami disasters. This activity is carried out through several stages of implementation, namely: Setting targets and targets to be achieved, compiling materials related to disaster mitigation which are packaged in the pocket book, installing directions for evacuation routes in the school environment, making maps of evacuation routes in schools, and carrying out socialization and simulation of disaster mitigation. The results obtained from this activity are a pocket book on earthquake and tsunami disaster mitigation, the installation of directions for evacuation routes in the school environment, availability an evacuation  route map at SDN 07 Bengkulu City and increasing awareness, understanding and knowledge of school residents about the concept of disaster mitigation.   ---   SDN 07 Kota Bengkulu merupakan sekolah dasar yang terletak di Kecamatan Teluk Segera yang jaraknya cukup  dekat dengan pantai. Karena faktor posisi inilah maka sekolah ini sangat rentan terhadap resiko bencana gempa bumi dan tsunami. Oleh karena itu sekolah ini harus memiliki kesiapsiagaan dalam menghadapi bencana yang dapat terjadi kapan saja. Faktanya, pendidikan mitigasi bencana di sekolah ini sangat minim. Selain itu, sekolah ini belum memiliki jalur evakuasi yang diperlukan saat bencana datang. Tujuan dari kegiatan pengabdian ini adalah membuat jalur evakuasi di lingkungan SDN 07 Kota Bengkulu dan meningkatkan kewaspadaan warga SDN 07 terhadap bencana gempa bumi dan tsunami.  Kegiatan ini dilakukan melalui beberapa tahap pelaksanaan yaitu: Menetapkan target dan sasaran yang akan dicapai, menyusun materi yang berkaitan dengan mitigasi bencana yang dikemas dalam bentuk buku saku, memasang petunjuk arah jalur evakuasi di lingkungan sekolah,  membuat peta jalur evakuasi di sekolah, serta melaksanakan sosialisasi dan simulasi mitigasi bencana. Hasil yang diperoleh dari kegiatan ini adalah buku saku mengenai mitigasi bencana gempa dan tsunami, terpasangnya petunjuk arah jalur evakuasi di lingkungan sekolah, tersedianya peta jalur evakuasi di SDN 07 Kota Bengkulu dan meningkatnya kesadaran, pemahaman dan pengetahuan warga sekolah tentang konsep mitigasi bencana.
“Data-Driven Decision Making”: Pengenalan Statistika dan Pemanfaatannya di SMA IT Iqra Kota Bengkulu Firdaus; Rachmawati, Ramya; Hidayati, Nurul; Damayanti, Septri; Yosmar, Siska
Jurnal Pengabdian Masyarakat Bumi Rafflesia Vol. 8 No. 1 (2025): APRIL: Jurnal Pengabdian Kepada Masyarakat Bumi Raflesia
Publisher : Universitas Muhammadiyah Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/jpmbr.v8i1.7352

Abstract

Kemampuan mengambil keputusan yang baik merupakan kebutuhan esensial bagi siswa. Terdapat banyak metode dalam mengambil keputusan, salah satunya adalah Data-Driven Decision Making, yaitu pengambilan keputusan berdasarkan analisis data. Pentingnya peran data dalam menentukan pengambilan keputusan berdasarkan data belum utuh dipahami oleh siswa SMA IT Iqra Kota Bengkulu karena kurikulum pada jenjang SMA terbatas pada statistika deskriptif yang meliputi pengenalan ukuran pemusatan, ukuran penyebaran, dan visualisasi data. Program Pengabdian Kepada Masyarakat (PkM) dengan judul “Data-Driven Decision Making”: Pengenalan Statistika dan Pemanfaatannya di SMA IT Iqra Kota Bengkulu bertujuan untuk mengenalkan analisis korelasi dan regresi yang dapat digunakan untuk mendukung pengambilan keputusan. Pelaksanaan PkM dilaksanakan secara klasikal dengan penyampaian materi dan pelatihan langsung dengan memanfaatkan Bahasa pemrograman RStudio. Evaluasi program PkM yang dilakukan dengan memberikan pre-test dan post-test menunjukkan bahwa terdapat perbedaan rata-rata hasil pemahaman sebelum dan setelah mengikuti kegiatan. Hal ini dapat diinterpretasikan bahwa kegiatan PkM memberikan pengaruh terhadap pemahaman siswa pengambilan keputusan berdasarkan analisis data.
IMPLEMENTATION OF FUZZY TIME SERIES CHEN FOR FORECASTING INDONESIAN OIL AND GAS IMPORTS VALUE Damayanti, Septri; Yosmar, Siska; Afandi, Nur
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 17 No 2 (2023): BAREKENG: Journal of Mathematics and Its Applications
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol17iss2pp0685-0694

Abstract

Indonesia is an importing country that frequently imports goods from abroad continuously every year. Imported goods are oil and gas and non-oil and gas. Oil and gas includes oil and gas. This oil and gas import value data is an example of time series data, where the data is obtained from data recapitulation at the Central Bureau of Statistics (BPS). Time series analysis is a method for predicting an event that will come by looking at data from the previous time. One of the newest methods of time series analysis used in this research is Fuzzy Time Series Chen method. The purpose of this research is to find out how the implementation of Fuzzy Time Series Chen method in predicting the value of Indonesian oil and gas imports and to know the results of forecasting the value of Indonesian oil and gas imports. In predicting the value of Indonesia's oil and gas imports using Fuzzy Time Series Chen method, the results of forecasting the value of Indonesia's oil and gas imports in August 2022 were US$ 3743.213 million with a MAPE value of 19.969%.
APPLICATION OF FUZZY TIME SERIES WITH FIBONACCI RETRACEMENT FOR FORECASTING STOCK PRICE PT. BANK RAKYAT INDONESIA Dwi Miranda, Anggel; Yosmar, Siska; Damayanti, Septri
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 17 No 2 (2023): BAREKENG: Journal of Mathematics and Its Applications
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol17iss2pp0787-0796

Abstract

Stock can be defined as securities that indicate the ownership of a person or legal entity to the company issuing the shares. Good stocks for long-term investment are stocks that have good fundamentals and large market capitalization. The purpose of investing is to make a profit. In investing in stocks, investors need to know the risk management that can affect the ups and downs of a stock. Forecasting or forecasting is an analysis to predict everything related to the production, supply, demand, and use of technology in an industry or business. One of the forecasting methods is using fuzzy time series. The primary purpose of fuzzy time series is to predict time series data that can widely use on any real-time data, including capital market data. In this study, we will discuss the evolution of the time series model in overcoming fluctuations that often occur in stock prices by using a fuzzy time series that combines a stock analysis approach, namely Fibonacci retracement. The stock data used in this study is the close price of BBRI for October 2021 to March 2022. Forecasting results for 1 April 2022 are IDR 4660.49 with a Mean Absolute Percentage forecasting accuracy value of 1.034%.
EARTHQUAKE FREQUENCY DATA MODELING IN MENTAWAI USING FUZZY TIME SERIES LEE AND FUZZY TIME SERIES TSAUR Damayanti, Septri; Rizal, Jose; Yosmar, Siska; Afandi, Nur; Acnesya, Vivin
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 18 No 1 (2024): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol18iss1pp0281-0294

Abstract

The Fuzzy Time Series (FTS) was first studied by Song and Chissom based on the theory of fuzzy sets and the concept of linguistic variables and their applications discovered by Zadeh. FTS has several models, namely FTS Lee, FTS Tsaur, and so on. In this study, we will model earthquake frequency data in Mentawai using FTS Lee and FTS Tsaur. The seismicity data used in this study is earthquake frequency data in the Mentawai which are calculated from 1960 to 2022. Additionally, the seismicity data source is taken from the U.S. Geological Survey catalog. Based on MAPE and MSE, the results obtained on the FTS Lee and FTS Tsaur models are MAPE values of 37,511% and 27,051%. And the MSE values obtained were 27,073 and 11,671. Thus, the best model used in modeling data on the frequency of earthquake occurrences in the Mentawai Islands is the Ruey Chyn Tsaur Fuzzy Time Series model.
PENINGKATAN LITERASI KEUANGAN BAGI SISWA SMA NEGERI 10 KOTA BENGKULU MELALUI EDUKASI KEUANGAN UNTUK MENDUKUNG INDEKS LITERASI KEUANGAN PROVINSI BENGKULU Dion Raja Kusumah; Kelfin Hardiansyah; Hisyam Rahmatullah Akbar; Arita Nurul Khotimah; Nur El Hasanah; Siska Yosmar
J-ABDI: Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 5 (2025): Oktober 2025
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53625/jabdi.v5i5.11180

Abstract

Based on the low financial literacy index in Bengkulu Province, which is below the national average, this education program is designed to enhance financial understanding and skills within the community. Through the financial literacy education program, students are taught basic financial concepts, budget planning, debt management, simple investment, and consumer protection using guided modules. The implementation of the program showed a significant improvement in students' financial literacy understanding, as measured through engagement, questionnaires, and test scores. Collaboration between educational institutions, local government, and financial institutions played an important role in the success of this program. The results of the program show that SMA Negeri 10 Kota Bengkulu students have a better understanding of financial literacy, which is expected to help them manage their personal finances more wisely. The program provides not only theoretical understanding but also valuable practical experience. The program is expected to contribute to the improvement of the financial literacy index in Bengkulu Province, promoting the financial well-being of the community, and regional economic growth.
Determination of the Disability Premium there is Life Insurance with Annual Payment for Type Benefit Waiver of Premium marsela, esti; Yosmar, Siska; Damayanti, Septri
Mathematical Journal of Modelling and Forecasting Vol. 1 No. 1 (2023): June 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/mjmf.v1i1.11

Abstract

When there is a work accident that results in someone becoming disabled or sick, it often leads to termination of employment (layoff) for reasons of productivity. A person who has a chance of having a work accident needs to buy a disability life insurance policy to reduce the financial losses that occur. One type of disability benefit in life insurance is the waiver of premiums. The purpose of this study is to determine the amount of annual disability premium that will be paid to be able to benefit from the type of benefit waiver of premium on dual-purpose life insurance either manually or using Excel Visual Basic for Application. The results showed that the calculation of annual premiums can be generalized that the older the insured, the greater the premium paid. Meanwhile, the greater the policy term, the smaller the premium paid.
OPTIMASI JALUR DISTRIBUSI BERAS SEJAHTERA DENGAN PENDEKATAN INTEGER PROGRAMMING (Studi Kasus di Perum BULOG Divisi Regional Bengkulu) Gumaratia, Deriani; Fanani Haryo Widodo; Siska Yosmar
Jurnal Integritas Serasan Sekundang Vol 6 No 1 (2024): Jurnal Integritas Serasan Sekundang
Publisher : Badan Penelitian dan Pengembangan Daerah KabupatenMuara Enim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64987/jiss.v6i1.84

Abstract

Penelitian ini bertujuan untuk menemukan rute terpendek dalam penyelesaian Travelling Salesperson Problem (TSP) pada jalur pendistribusian RASTRA oleh Perum BULOG di Kota Bengkulu dengan menggunakan metode Branch and Bound. Parameter yang digunakan dalam penelitian ini adalah jarak jalan yang dilalui oleh mobil pendistribusi RASTRA dari e-warong ke e-warong dengan memanfaatkan Google Maps. Prosedur menemukan route terpendek ditempuh melalui titik awal, yakni gudang BULOG di Kota Bengkulu, ke setiap e-warong dan kembali lagi ke gudang BULOG dengan syarat tiap e-warong hanya dikunjungi satu kali saja. Permasalahan TSP ini dimodelkan ke dalam masalah integer programming. Model ini diselesaikan dengan bantuan software LINGO 11.0 untuk memperoleh solusi optimal. Hasil yang diperoleh dari penelitian ini berupa rute terpendek dengan total jarak terpendek adalah 44,2 km dan 41,2 km
Co-Authors Acnesya, Vivin Arita Nurul Khotimah Baki Swita Dian Agustina Dion Raja Kusumah Dwi Miranda, Anggel Dyah Setyo Rini Etis Sunandi Fajri Ramadan Fanani Haryo Widodo Firdaus Gumaratia, Deriani Herlin Fransiska Hisyam Rahmatullah Akbar Jose Rizal Kelfin Hardiansyah Lidya Savitri marsela, esti Meca Nerdika Moradarma Taksiyah Nova Asri Ramdhani Nur Afandi Nur Afandi Nur El Hasanah Nurul Hidayati rachmawati, Ramya Ramya Rachmawati Rewan Jayadi S Damayanti S Febrika Septri Damayanti Septri Damayanti Swita, Baki Syahrul Akbar Winalia Agwil Zulfia Memi Mayasari