<p>Algoritma pergantian adalah suatu mekanisme pergantian objek dalam cache yang lama dengan objek baru, dengan mekanisme  melakukan penghapusan objek sehingga mengurangi penggunaan bandwidth dan server load. Penghapusan dilakukan apabila cache penuh sehingga penyimpanan entri baru diperlukan. Secara umum algoritma FIFO, LRU dan LFU sering digunakan dalam pergantian objek, akan tetapi diperoleh suatu objek yang sering digunakan namun terhapus dalam pergantian cache sedangkan objek tersebut masih digunakan, akibatnya pada waktu klien melakukan permintaan dibutuhkan waktu yang lama dalam browsing objek. Untuk mengatasi masalah tersebut dilakukan kombinasi algoritma pergantian cache Multi-Rule Algorithm, dalam bentuk algoritma kombinasi ganda FIFO-LRU dan triple FIFO-LRU-LFU. Algoritma Mural (Multi-Rule Algorithm) menghasilkan respon pada cache size 200 MB dengan waktu tanggapan rata-rata berturut-turut 56,33 dan 42 ms, sedangkan pada algoritma tunggal memerlukan waktu tanggapan rata-rata 77 ms. Sehingga Multi-Rule Algorithm dapat meningkatkan kinerja terhadap waktu penundaan, throughput, dan hit rate. Dengan demikian, algoritma pergantian cache Mural, sangat direkomendasikan untuk meningkatkan akses klien.</p><p> </p><p class="Judul2"><em>Abstract</em></p><p class="Abstract">Substitution algorithm is a mechanism to replace objects in the old cache with new objects, with a mechanism to delete objects so that it reduces bandwidth usage and server load. Deletion is done when the cache is full so saving new entries is needed. In general, FIFO, LRU and LFU algorithms are often used in object changes, but an object that is often used but is deleted in the cache changes while the object is still being used, consequently when the client makes a request it takes a long time to browse the object. To overcome this problem a combination of Multi-Rule Algorithm cache replacement algorithms is performed, in the form of a double combination algorithm FIFO-LRU and triple FIFO-LRU-LFU. The Mural algorithm (Multi-Rule Algorithm) produces a response on a cache size of 200 MB with an average response time of 56.33 and 42 ms respectively, whereas a single algorithm requires an average response time of 77 ms. So the Multi-Rule Algorithm can improve the performance of the delay, throughput, and hit rate. Thus, the Mural cache change algorithm, is highly recommended to improve client access.</p><p><br /><em></em></p>

In human life, health is the most valuable asset. a healthy body and soul gives happiness to everyone. But sometimes circumstances make human health decline. One of the causes of declining human health is due to viruses or bacteria that spread without people knowing it. One of the infectious diseases is tuberculosis (TB). Tuberculosis is a disease that occurs due to an infection caused by a bacterium called Mycobacterium tuberculosis. TB is a disease that spreads very easily, namely by air. The patient will spread germs through the air if the patient coughs or sneezes. Death is not uncommon because those with symptoms are afraid to go to the hospital for medical check-ups because they are hampered by a lack of funds. This situation is very concerning. Because of these circumstances, technological developments can be used as an alternative solution in replacing or assisting in diagnosing diseases experienced by people based on their symptoms. One of the technologies that develop about diagnosing disease is by using an expert system. An expert system is a system created by experts by developing technology based on science. In expert systems, their use must be combined with a method so that they can work properly and optimally. In this study the method used is the Bayes Theorem method. The Bayes Theorem method was developed by a priest named Thomas Bayes. The pastor comes from England who is a Presbyterian pastor. The Rev. Thomas Bayes developed Bayes' Theorem in 1763 and was perfected and redeveloped by an expert named Laplace. Based on the results of the above process, information was obtained that 87% of patients who consulted had pulmonary tuberculosis