Air pollution is a disaster that can indirectly interfere with human health, Indonesia is the third highest country in the world that has pollution levels, one of the types of pollution that threatens public health is the increase of CO, NO2 and SO2 level in the air. With the increasing level of air pollution in the city, it requires a device that can monitor air pollution in a real time. By integrating air sensor and Raspberry Pi as data processor and using LoRa module as transceiver module, then the process of transmitting data from transmitter to receiver can be done directly without connected internet. In a test, the system can transmit intensity data information by wireless system on Line Of Sight (LOS) scemes at a maximum distance of 1.7 Km and Non Line Of Sight (NLOS) scheme at a distance of 400 meters with a average delay is 2 second.
ABSTRAK
ANALISIS OPTIMASI TARGET 235 U PENGKAYAAN RENDAH (LEU) UNTUK MENDUKUNG PRODUKSI 99 Mo DAN TARGET BATU TOPAZ DI REAKTOR RSG-GAS. Peningkatan utilitas produksi radioisotop di reaktor RSG-GAS
KAJIAN PENAMBAHAN DUMMY ALUMINIUM PADA POSISI IRADIASI SENTRAL (CIP) TERHADAP PARAMETER NEUTRONIK REAKTOR RSG-GAS. Reaktor RSG-GAS adalah reaktor riset yang dioperasikan untuk keperluan produksi radioisotop, analisis aktivasi neutron, penelitian dan uji material. Reaktor RSG-GAS beroperasi dengan rata-rata energi terbangkitkan sebesar 625 MWd setiap siklus dan manajemen bahan bakar teras menggunakan pola 5/1 untuk pemuatan bahan bakar. Setiap pergantian teras dilakukan perhitungan dan pengukuran parameter reaktor untuk mengetahui pengaruh terhadap keselamatan operasi reaktor. Pada kondisi operasi normal fasilitas iradiasi dalam teras berisi air atau dummy aluminium. Penambahan dummy aluminium pada fasilitas iradiasi perlu diketahui pengaruhnya terhadap parameter neutronik reaktor RSG-GAS. Tujuan penulisan makalah ini yaitu melakukan perhitungan dan pengukuran parameter operasi reaktor dan mengetahui pengaruh penambahan dummy aluminium terhadap reaktivitas dan fluks neutron pada teras 97 reaktor RSG-GAS. Perhitungan parameter operasi dilakukan menggunakan kombinasi program WIMS/D5 untuk generasi tampang lintang sel, Batan-2DIFF untuk menghitung reaktivitas dan faktor puncak daya radial serta Batan-3DIFF untuk menghitung faktor puncak daya aksial dan fluks neutron dalam teras reaktor. Efek reaktivitas akibat penempatan dummy aluminium pada CIP sebesar 0,17 %Δk/k. Jika dummy aluminium diletakkan di CIP dan IP akan menaikkan fluks di posisi tersebut karena aluminium mempunyai daya moderasi yang sangat baik. Nilai faktor puncak daya radial dan aksial masing-masing 1,2200 dan 1,2902. Berdasarkan hasil perhitungan dan pengukuran besaran tersebut masih berada dalam batas yang diizinkan untuk keselamatan operasi reaktor dan menunjukan bahwa teras 97 reaktor RSG-GAS memenuhi batas keselamatan operasi reaktor.Kata kunci: Dummy aluminium, reaktivitas, fasilitas iradiasi, operasi reaktor
Problems in artificial intelligence can be solved using intelligent tracking methods through intelligent search mechanisms. Understandably, search algorithm performances are highly dependent on the problem solved. In this study, we evaluate and compare the performance of five uninformed and informed search (breadth-first search, depth first search, optimal search and best first search using two heuristic functions, namely mismatched tile and Manhattan distance) algorithms to solve the eight-puzzle game problem. For each algorithm, the numbers of raised and explored nodes were assessed and analyzed. Our experiment demonstrates that informed search with heuristic outperforms uninformed search significantly, both in terms of memory usage efficiency and computational power efficiency. On average, the informed search using heuristic requires only 5.33% of memory used by uninformed search and only 4.45% of computational power demanded by uninformed search. Boxplot analysis also confirms that informed search using heuristic also delivers more stable performance contrasted to uninformed search. These could be a concern for researchers and game developers to consider implementing the heuristically enhanced search algorithm to utilize memory and computational power efficiently to solve similar problems.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.