The SARS-CoV-2 virus causes the infectious disease COVID-19. This virus can be transmitted via the fomite mode of transmission (the surface of objects contaminated with the virus). It is possible to prevent the spread of COVID-19 by spraying disinfectant on infected objects. This research aims to develop a mathematical model of COVID-19 fomite transmission with disinfectant spraying intervention. The model was analyzed by determining its stability and critical point. A Ro analysis was conducted to determine the impact of disinfectant spraying on the eradication or spread of the disease. The results demonstrated that, in the absence of disinfectant spraying, the number of infected humans increased rapidly and abruptly. Based on the findings of sensitivity analysis, it is known that spraying disinfectants is highly effective at reducing Ro, thereby reducing the number of infected humans and eradicating the disease from the population. In this study, the recommended measure to prevent the spread of COVID-19 is the periodic application of disinfectant in accordance with medical regulations.
This research aims to determine the right marketing strategy for meatball products and generate optimum profits using Game Theory. The novelty of the research is lies in the object study. The data used in this study is primary data collected by using a questionnaire given to visitors at three Bakso Warungs in Bombana Regency, namely Warung Bakso Solo, Baper, and BRI. The number of samples to be observed is 50 respondents. Then the data that has been collected will be tested for validity and reliability, and then will be processed using the Game Theory method. Based on the results of the analysis obtained the optimal strategy for each meatball stall. The optimal game value obtained shows that the advantage of Warung Bakso Solo in marketing is that product prices are cheaper, but Warung Bakso Solo must use a strategy to improve the cleanliness of the stalls so that sales are optimal. The advantage of Warung Bakso Baper in marketing is the politeness of employees, but Warung Bakso Baper must improve in the strategy of timely delivery of orders. The superiority of Warung Bakso BRI in marketing is product quality, but Warung Bakso BRI must improve its employee politeness strategy
Penyakit Demam Berdarah (DBD) adalah penyakit menular yang disebabkan oleh virus dengue dan ditularkan melalui gigitan nyamuk. Penyakit ini banyak berkembang di daerah tropis dan sub-tropis seperti Indonesia. Ada dua populasi makhluk hidup yang terlibat dalam penyebaran penyakit DBD yaitu manusia yang disebut host dan nyamuk Aedes Aegypti betina yang disebut sebagai vector pembawa virus dengue. Oleh karena itu, penyebaran penyakit DBD dapat dimodelkan mengikuti model host-vector. Keberadaan vektor nyamuk Aedes Aegypti, sangat mempengaruhi penyebaran dan jumlah kasus terjadinya penyakit DBD. Suhu atau temperatur udara merupakan salah satu faktor lingkungan yang mempengaruhi kehidupan nyamuk Aedes Aegypti. Dalam penelitian ini akan dilakukan konstruksi model transmisi penyebaran penyakit Demam Berdarah dengan Model SEIR-SEI yang dipengaruhi oleh suhu. Selanjutnya dilakukan analisis dinamik dari model transmisi penyakit DBD yang dipengaruhi oleh suhu dari nyamuk ke manusia. Dengan menggunakan software matematika Maple 17, diperoleh hasil simulasi numerik Model SEIRS-SEI menunjukkan bahwa suhu sangat mempengaruhi penurunan atau peningkatan populasi nyamuk terhadap penyebaran penyakit demam berdarah.AbstractDengue Fever (DHF) is a contagious disease caused by the dengue virus and transmitted through mosquito bites. This disease develops in many tropical and sub-tropical areas such as Indonesia. There are two populations of living things that are involved in the spread of dengue, namely humans, called the host and female Aedes aegypti mosquitoes, which are known as vectors of the dengue virus. Therefore, the spread of dengue can be modeled following the host-vector model. The existence of the Aedes Aegypti mosquito vector greatly affects the spread and number of cases of dengue fever. Temperature or air temperature is one of the environmental factors that affect the life of the Aedes Aegypti mosquito. In this study, the construction of a model of transmission of the spread of Dengue Fever with the SEIR-SEI Model which is one of the environmental factors that affect the life of the Aedes Aegypti mosquito. In this study, the construction of a model of transmission of the spread of Dengue Fever with the SEIR-SEI Model which is influenced by temperature will be constructed. Furthermore, a dynamic analysis of the dengue transmission model which is influenced by temperature from mosquitoes to humans is carried out. By using the Maple 17 mathematical software, the numerical simulation results of the SEIRS-SEI Model show that temperature greatly affects the decline or increase in mosquito populations against the spread of dengue fever.
Kehidupan makhluk hidup tidak terlepas dari interaksi. Interaksi yang terjadi dapat berupa persaingan dalam memperebutkan makanan. Pengetahuan mengenai persaingan/kompetisi antar populasi sangat penting untuk diketahui sebagai gambaran prediksi ketersediaan suatu bahan makanan dan ketahanan spesies dalam ekosistem yang menjamin keseimbangan ekosistem itu sendiri. Dalam penelitian ini dipelajari perilaku persaingan memperebutkan makanan antara populasi kijang dan kelinci dalam suatu kawasan tertutup. Model yang dibangun adalah Model Mikro/Individual Based Model yang melibatkan model dinamik stokastik pada pertumbuhan populasi kelinci dan kijang. Hasil simulasi dan analisis sensitivitas model menunjukkan bahwa punah dan hidup eksisnya spesies sangat ditentukan oleh jumlah kondisi awal dari spesies serta nilai dari kostanta persaingan antar populasi.
Pelaksanaan program kegiatan Pengabdian kepada Masyarakat Terintegrasi Kuliah Kerja Nyata–Tematik (KKN-Tematik) bertujuan untuk membuat dan mengelola website kelurahan yang pengelolaannya dilaksanakan oleh kelurahan. Metode pelaksanaan kegiatan ini dengan cara memberikan pelatihan sekaligus praktek pembuatan website kepada pegawai kelurahan punggolaka yang dilanjutkan dengan sosialisasi physiscal distancing kepada RT/RW. Hasil dari kegiatan PkM terintegrasi KKN-Tematik ini adalah mitra dalam hal ini Kelurahan Punggolaka telah memiliki website kelurahan, yang pengelolaannya diserahkan kepada seorang admin kelurahan yang telah ditunjuk lurah. Pelaksanaan pelatihan pengelolaan website dilaksanakan secara tatap muka dan praktik langsung dengan tetap memperhatikan protokol kesehatan Covid-19. Hadirnya website kelurahan ini, akan mengoptimalkan kinerja RT/RW dan pegawai kelurahan dimasa tanggap pandemi saat ini, sekaligus menekan secara signifikan penyebaran Covid-19. Keberlanjutan website ini ditentukan sepenuhnya oleh admin kelurahan dalam memperbarui semua informasi kemasyarakatan secara real time.
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