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Joyosemito, Ibnu Susanto
Universitas Bhayangkara Jakarta Raya
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Pendekatan Pemodelan Matematika Dinamis Dalam Analisis Prediksi COVID-19 Sebagai Masukan Kebijakan Pemerintah Indonesia Joyosemito, Ibnu Susanto; Nasir , Narila Mutia
Jurnal Pengabdian kepada Masyarakat UBJ Vol. 4 No. 1 (2021): Januari 2021
Publisher : Lembaga Penelitian Pengabdian kepada Masyarakat dan Publikasi Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1053.105 KB) | DOI: 10.31599/jabdimas.v4i1.455

Abstract

World Health Organization has declared Coronavirus Disease 2019 (COVID-19) as pandemic on March 11, 2020. It becomes a global health issue since all countries over the world including Indonesia are fighting against the disease. In order to minimize the impact of COVID-19, the government need to implement the right policy. One of the important elements in deciding the policy is by having the estimation of the COVID-19 cases using the modeling simulation. The objective of this community service activity was to provide the analysis the COVID-19 cases in Indonesia using a dynamic modeling approach. Two basic scenarios of with and without the policy implementation was simulated simultaneously with Monte Carlo method. The model results demonstrated that it needs to implement Large Scale Social Restriction (LSSR) policy to reduce the contact rate in order to reduce the spread of transmission and to extend the period of LSSR until the peak of pandemic in Indonesia is passed. The peak of pandemic under LSSR policy scenario will be reached in the middle of July. Those result were presented twice to government party. Unfortunately, the LSSR was relaxed soon after the second presentation. A precise prediction by the model was occurred when the relaxation of LSRR was implemented, then the peak of COVID-19 pandemic was shift to the uncertain time. It is suggested that the stakeholders especially the policy maker should consider the modeling analysis as a tool for helping in the policy arrangement of COVID-19 countermeasure. Keywords: COVID-19, Dynamics Modeling, High Leverage Policy, Social Restriction Abstrak Organisasi Kesehatan Dunia (WHO) telah menetapkan Coronavirus Disease 2019 (COVID-19) sebagai pandemi pada 11 Maret 2020. COVID-19 menjadi isu kesehatan secara global karena semua negara di dunia termasuk Indonesia sedang berjuang melawannya. Untuk meminimalisir dampak COVID-19, pemerintah perlu menerapkan kebijakan yang tepat. Salah satu elemen penting dalam pengambilan keputusan adalah dengan melakukan estimasi kasus COVID-19 dengan menggunakan pemodelan. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk menyediakan analisis kasus COVID-19 di Indonesia dengan menggunakan pendekatan pemodelan dinamis. Dua buah basis skenario yaitu dengan dan tanpa implementasi kebijakan disimulasikan secara bersamaan dengan metode Monte Carlo. Hasil keluaran model menunjukkan perlunya penerapan kebijakan Pembatasan Sosial Berskala Besar (PSBB) untuk mengurangi laju kontak (contact rate) dengan penderita guna mengurangi penyebaran penularan dan memperpanjang periode PSBB hingga puncak pandemi COVID-19 di Indonesia terlampaui. Puncak pandemi dalam skenario kebijakan PSBB akan terjadi pada pertengahan Juli. Hasil pemodelan tersebut sudah dua kali dipresentasikan kepada pihak pemerintah. Sayangnya, PSBB diperlonggar diimplementasikan oleh pemerintah setelah presentasi kedua. Prediksi yang tepat secara kuantitatif oleh model terjadi pada saat PSBB diperlonggar diimplementasikan oleh karenanya puncak pandemi COVID-19 bergeser ke waktu yang belum dapat dipastikan. Untuk itu disarankan agar para pemangku kepentingan terutama pembuat kebijakan dapat mempertimbangkan analisis pemodelan sebagai alat bantu dalam menyusun kebijakan untuk tindakan penanggulangan COVID-19. Kata kunci: COVID-19, Modeling, Kebijakan Berpengaruh Tinggi, Pembatasan Sosial
Budidaya Sayur Melalui Kegiatan Pendampingan Sebagai Upaya Mewujudkan Program Ketahanan Pangan Khasanah, Fata Nidaul; Untari, Dhian Tyas; Susanto, Ibnu; Nurmanto, David
Jurnal Pengabdian kepada Masyarakat UBJ Vol. 6 No. 2 (2023): June 2023
Publisher : Lembaga Penelitian Pengabdian kepada Masyarakat dan Publikasi Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/6yva8w35

Abstract

One of the efforts to support the availability of food, especially vegetables as a provider of healthy family nutrition during a pandemic, is to use yards for the cultivation of various types of plants. One of the activities that can be done is to carry out vegetable cultivation activities. The partner of this activity is South Tambun village RT 04. The location of the partner has a yard but is felt to be less than optimal related to its utilization. The condition of the yard so far has not contributed to the fulfillment or support of daily needs. Furthermore, the yard so far, in addition to not contributing added value to the fulfillment of daily needs, also does not provide comfort and beauty. If the yard is arranged and empowered, it is expected to add aesthetic value and contribute to the needs of the community, especially vegetables for daily consumption. So that the arrangement and utilization of the yard as one solution that can contribute to daily needs, especially vegetables. The implementation of activities starts from counseling, training, mentoring and evaluation. Training begins with spreading vegetable seeds, followed by care and harvesting. Evaluation of activities related to enthusiasm and satisfaction from service activities that have been carried out reaches 92%.
Analisis Perbandingan Emisi Gas Rumah Kaca dan Potensi Energi Listrik Antara Insinerasi dan Proses Biologi (Studi Kasus Pembangkit Listrik Tenaga Sampah Merah Putih) Mulia Bakti, Rani; Susanto Joyosemito, Ibnu; Shanti Meilani, Sophia
Jurnal Jaring SainTek Vol. 6 No. 1 (2024): April 2024
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/86mqy720

Abstract

Solid waste disposal is one of the contributing sectors to greenhouse gas (GHG) emissions. Open burning of waste generates CO2, anaerobic decomposition of organic waste generates CH4, while composting activities and biological processes generate CO2, CH4, and N2O. Transportation to waste disposal facilities contributes to GHG emission as well. The aim of this study is to compare GHG emission and electrical energy generated from incineration and biological process. Calculation of estimated GHG emission in this study used the IPCC Tier 2 method with a combination of default data and local data such as data on the composition of waste for incineration compared to biological processes. The result indicated that incineration generated lower GHG emission compared to biological process. Higher electrical energy potential can be obtained from biological process, if most of CH4 is converted to electrical energy. PLTSA Merah Putih, which applied energy recovery from incineration, simultaneously convert heat to electrical energy and reduce GHG problem from CH4
Penerapan Metode Just In Time dalam Upaya Optimalisasi Biaya Bahan Baku Produksi Tahu di Usaha Mikro Kecil Dan Menengah (UMKM) (Studi Kasus: CV. Pono Jaya) Arif Hidayat, Muhammad Yogi; Saputra, Yayan; Prasmoro, Alloysius Vendhi; Rosihan, Rifda Ilahy; Joyosemito, Ibnu Susanto
Jurnal Rekavasi Vol 11 No 1 (2023)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/rekavasi.v11i1.4297

Abstract

CV. Pono Jaya adalah sebuah perusahaan yang bergerak dalam bidang industri makanan yang memproduksi tahu. Dalam proses produksi tahu periode 2021 terdapat sisa bahan baku kedelai yang tidak terpakai pada saat proses pembuatan tahu sehingga mengakibatkan adanya penumpukan bahan baku kedelai di gudang dan menimbulkan biaya simpan yang besar. Untuk itu dilakukan penelitian ini agar dapat menentukan pengendalian persediaan pada bahan baku yang optimal dan memberikan usulan saran dalam pengendalian persediaan pada bahan baku kedelai dengan memakai metode Just In Time. Hasil dari penelitian ini dapat diketahui bahwa setelah memakai metode Just In Time untuk pemesanan yang optimal dalam satu tahun adalah 15 kali, dalam satu kali pemesanannya sebanyak 3170 Kg untuk bahan baku kedelai dan dibutuhkan 3 kali pengiriman, untuk pengiriman satu minggu pertama adalah 1070 Kg, minggu kedua adalah 1050 Kg, dan minggu ketiga adalah 1050 Kg. Dari data aktual perusahaan didapatkan biaya persediaannya adalah Rp. 6.850.000, lalu setelah memakai metode Just In Time maka biaya persediaan yang dikeluarkan adalah Rp. 818.117.
Analysis of Greenhouse Gas Emission Load and Emission Reduction from Switching to Electric Vehicles: A Case Study of Java Island Wicaksono, Surya Adi; Huboyo, Haryono Setiyo; Samadikun, Budi Prasetyo; Joyosemito, Ibnu Susanto
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 21, No 3 (2024): November 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v21i3.773-792

Abstract

In order to  mitigate the impact of climate change  arising from Greenhouse Gas (GHG) emissions generated from the transportation sector, many countries  including Indonesia, have  initiated to develop policies to encourage environmentally friendly transportation technologies. Electric vehicles  represent a highly sustainable  alternative when compared to conventional vehicles. This study aims to  assess the potential reduction of GHG emissions from the shifting  to electric vehicle utilization on Java Island. The research method was conducted by modeling conventional vehicles until 2033 where there was a transition to electric vehicles throughout the model year and then calculating the GHG emission.  This study employs three scenarios : Business As Usual (BAU), Electric Vehicle Plan (EVP) with existing scenario power plant and Electric Vehicle Plan (EVP) with National Energy Plan (NEP) scenario power plant.  Model results revealed potential GHG emission reductions within 12.11% from the Existing EVP scenario and 12.54% from the NEP scenario against the BAU scenario  due to the shifting usege of electric vehicles on Java island. Based on the model results, it is possible to determine that shifting from conventional vehicles to electric vehicles can reduce GHG emissions from conventional vehicle use.
Analisis Risiko Pengolahan Limbah Bahan Berbahaya dan Beracun dengan Cara Termal Melalui Insinerasi (Studi Kasus: PT. XYZ) Surya Adi Wicaksono; Joyosemito , Ibnu Susanto; Haudi Hasaya
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rapid industrial growth increases the production of hazardous and toxic waste (LB3), which, if not managed properly, can pose a serious risk to human health and the environment. This study analyses the risks associated with the incineration of hazardous waste at PT XYZ, using the Hazard Identification, Risk Assessment and Risk Control (HIRARC) approach based on the AS/NZS 4360:2004 standard. Hazard identification is conducted via Job Safety Analysis (JSA), while risk assessment considers likelihood and severity. The results show that the infectious waste feeding process and combustion emissions pose the greatest risk (high and very high), with potential consequences including exposure to chronic diseases and environmental pollution. Risk control is achieved by providing personal protective equipment (PPE), monitoring flue gas emissions and managing incinerator residues in accordance with regulations. This study highlights the importance of implementing strict risk management measures and technological innovations to mitigate the negative impacts of hazardous waste incineration.
Evaluating Environmental and Public Health Risks of Medical Waste Incineration Using Air Dispersion Modeling in Indonesia Joyosemito, Ibnu Susanto; Meilani, Sophia Shanti; Azmi, Muhammad
Jurnal Kesehatan Lingkungan Indonesia Vol 24, No 3 (2025): Oktober 2025
Publisher : Master Program of Environmental Health, Faculty of Public Health, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkli.68740

Abstract

Latar belakang: Pengembangan fasilitas pengolahan limbah medis tetap menjadi persoalan utama, terutama di wilayah yang memiliki infrastruktur yang belum memadai. Sebagai tanggapan atas masalah ini, pemerintah Indonesia telah merancang pembangunan insinerator limbah medis yang ditujukan untuk meningkatkan sistem penanganan limbah di dalam negeri. Meskipun proyek ini menjanjikan peningkatan dalam pengelolaan limbah, implikasi lingkungan dari insinerator perlu diperhatikan, khususnya yang berkaitan dengan penurunan kualitas udara ambien.Metode: Penelitian ini menggunakan pendekatan pemodelan dispersi udara Gaussian untuk menganalisis pola penyebaran dan besarnya konsentrasi polutan udara yang dihasilkan dari spesifikasi insinerator limbah medis yang diusulkan. Investigasi difokuskan pada area pemukiman yang ada di dekatnya, berjarak 100 meter dari lokasi instalasi cerobong insinerator yang diusulkan, guna mempelajari dampak langsung terhadap populasi sekitar. Penelitian ini mensimulasikan dua skenario stabilitas atmosfer: 'sangat tidak stabil' (A) dan 'tidak stabil' (B) berdasarkan kondisi meteorologi tahunan di lokasi.Hasil:  Hasil penelitian menunjukkan bahwa lima parameter kualitas udara ambien utama—nitrogen dioksida (NO₂), sulfur dioksida (SO₂), karbon monoksida (CO), partikel tersuspensi total (TSP), dan timbal (Pb)—masih memenuhi Baku Mutu Udara Ambien Nasional (BMUAN) Indonesia dalam kedua skenario stabilitas atmosfer yang disimulasikan. Meskipun konsentrasi Pb dan NO₂ masih berada dalam batas yang diperkenankan BMUAN yaitu 2 µg/m³ untuk Pb dan 200 µg/m³ untuk NO₂, nilainya mendekati ambang batas regulasi. Dalam skenario terburuk, konsentrasi maksimum yang tercatat adalah 1,459 µg/m³ untuk Pb (72,95% dari batas BMUAN) dan 128,840 µg/m³ untuk NO₂ (64,42% dari batas BMUAN), temuan ini menegaskan pentingnya pemantauan kualitas udara secara berkala untuk memitigasi potensi risiko lingkungan.Simpulan:  Meskipun kelima parameter kualitas udara yang dianalisis masih berada dalam batas BMUAN, pemantauan berkala tetap diperlukan karena konsentrasi Pb dan NO₂ mendekati ambang batas regulasi. Studi ini menyoroti pentingnya strategi mitigasi, termasuk pemantauan kualitas udara jangka pendek dan panjang serta biomonitoring bagi populasi berisiko, untuk mengantisipasi dampak kesehatan akibat paparan kumulatif. Selain itu, hasil penelitian ini menunjukkan bahwa evaluasi dampak polutan berdasarkan variasi musiman dan kondisi cuaca ekstrem perlu dipertimbangkan dalam model dispersi udara guna meningkatkan akurasi prediksi. Penguatan regulasi emisi insinerator dalam Peraturan Pemerintah RI No. 22/2021, serta eksplorasi teknologi alternatif pengolahan limbah medis, seperti autoclaving dan pyrolysis, direkomendasikan untuk mendukung praktik pengelolaan lingkungan yang lebih berkelanjutan. ABSTRACT Background: The development of medical waste processing facilities remains a major issue, especially in areas with inadequate infrastructure. In response to this issue, the Indonesian government has initiated plans for a medical waste incinerator aimed at improving waste management practices in the country. While the project promises improvements in waste management, the environmental implications of the incinerator need to be addressed, particularly in relation to ambient air quality degradation.Method: This study employs a Gaussian air dispersion modeling approach to analyze the dispersion patterns and magnitude of air pollutant concentrations emanating from the proposed medical waste incinerator specifications. Our investigation is focused on a nearby existing residential area located 100 meters from the proposed incinerator stack installation to study the immediate impact on nearby population. The study simulated two atmospheric stability scenarios: 'very unstable' (A) and 'unstable' (B) based on annual meteorological condition at site.Result:  The study revealed that concentrations of five key ambient air quality parameters—nitrogen dioxide (NO₂), sulfur dioxide (SO₂), carbon monoxide (CO), total suspended particulate (TSP), and lead (Pb)— comply with Indonesia's National Ambient Air Quality Standards (INAQS) under both tested atmospheric stability scenarios. Although the concentrations of Pb and NO₂ remain within the permissible limits set by INAQS, which are 2 µg/m³ for Pb and 200 µg/m³ for NO₂, their values are approaching the regulatory thresholds. Under the worst-case scenario, the maximum concentrations recorded were 1.459 µg/m³ for Pb (72.95% of the INAQS limit) and 128.840 µg/m³ for NO₂ (64.42% of the INAQS limit), these findings highlight the need for continuous air quality monitoring to mitigate potential environmental risks.Conclusion:  Although the five analyzed ambient air quality parameters remain within the INAQS limits, regular monitoring is still required as Pb and NO₂ concentrations are approaching regulatory thresholds. This study highlights the importance of mitigation strategies, including short- and long-term air quality monitoring and biomonitoring for at-risk populations, to anticipate the health impacts of cumulative exposure. Furthermore, the findings indicate that the evaluation of pollutant impacts based on seasonal variations and extreme weather conditions should be incorporated into air dispersion models to enhance predictive accuracy. Strengthening emission regulations for incinerators under Government Regulation No. 22/2021, along with exploring alternative medical waste treatment technologies, such as autoclaving and pyrolysis, is recommended to support more sustainable environmental management practices. 
PERBANDINGAN KOMPOS PRODUK PEMANFAATAN LIMBAH MAGGOT BLACK SOLDIER FLY (BSF) DENGAN KOMPOS SAMPAH ORGANIK Haudi Hasaya; Dovina Navanti; Luthfian Rizki Ramadhan; Ibnu Susanto; Wahyu Kartika; Sophia Shanti Meilani; Elvi Kustiyah; Warniningsih
Jurnal Rekayasa Lingkungan Vol. 24 No. 1 (2024)
Publisher : Institut Teknologi Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37412/jrl.v24i1.257

Abstract

Sampah organik merupakan jenis sampah paling dominan ditemui di Tempat Pengolahan Akhir (TPA) di Indonesia. Salah satu upaya minimasi jumlah sampah yang masuk ke TPA adalah dengan mengolah sampah organik, contohnya dengan pemanfaatan sampah dalam budidaya black soldier fly (BSF) menjadi produk pakan ternak. Namun proses budidaya ini masih menghasilkan residu berupa limbah budidaya maggot (kasgot). Residu kasgot ini juga dapat dimanfaatkan menjadi campuran kompos padat, dalam upaya meningkatkan kualitas kompos. Dalam penelitian ini, dilakukan perbandingan 2 variasi kompos, yaitu dilakukan variasi 1 (50% limbah budidaya maggot : 50% sampah organik) dan variasi 2 (100% sampah organik) untuk melihat perbedaan kualitas kompos, baik secara fisik, kimia (kandungan N, P, K, dan Kadar Air), serta neraca massa dari 2 proses pengomposan berbeda. Pengomposan dilakukan simultan selama 30 hari, dan setiap hari dilakukan pengamatan fisik, pengukuran suhu dan pH pada 2 variasi kompos. Di akhir pengomposan, variasi 1 menunjukkan hasil uji kandungan N = 3,95%, P = 1,30%, K = 2,52%, Kadar air = 34,60%; sedangkan variasi 2 menunjukkan hasil uji kandungan N = 2,22%, P = 1,06%, K = 1,08%, Kadar Air = 29,96%. Untuk kedua variasi kompos parameter kandungan N, P, K, dan Kadar Air memenuhi Standar Nasional Indonesia 19-7030-2004 untuk Kompos dari Sampah Organik Domestik. Kualitas kompos variasi 1 cenderung lebih baik daripada variasi 2, dengan tekstur lebih halus dan lebih cepat menjadi kompos, serta mengandung nilai N, P, K lebih besar. Reduksi sampah organik dari pengomposan variasi 1 mencapai 63,33% dan variasi 2 mencapai 42%, sehingga berpotensi mengurangi sampah organik dibuang ke TPA.
Co-Authors Afriyanti, Avira Alloysius Vendhi Prasmoro, Alloysius Vendhi Arif Hidayat, Muhammad Yogi Aulia Maharani Avira Afriyanti Baequni, Baequni Budi Prasetyo Samadikun Bungaran Saing, Bungaran David Nurmanto Desy Indrias Wari Dovina Navanti Elvi Kustiyah Elvi Kustiyah Elvi Kustiyah, Elvi Fata Nidaul Khasanah Haryono Setiyo Huboyo Hasaya, Haudi Haudi Hasaya Haudi Hasaya Idaul Hasanah Ismaniah Ismaniah Kartika, Wahyu Luthfian Rizki Ramadhan Meilani, Sophia Shanti Muhammad Abidzar Alfian Muhammad Akmal Darmawan Muhammad Azmi, Muhammad Muhammad Khairul Najib Mulia Bakti, Rani Narila Mutia Nasir Narila Mutia Nasir Nasir , Narila Mutia Nasir, Narila Mutia Navanti, Dovina Noval Nurdiansyah Nurmanto, David Rifda Ilahy Rosihan Shanti Meilani, Sophia Shanti, Sophia Siti Sarah Sophia Shanti Sophia Shanti Meilani Surya Adi Wicaksono Tri Haryati Untari, Dhian Tyas Wahyu Kartika Wahyu Kartika Warniningsih Wicaksono, Surya Adi Wiryalhaqqi Tianto Yayan Saputra, Yayan