Rumah Sakit Bhayangkara merupakan salah satu instansi kesehatan negeri yang sedang menghadapi persaingan dalam tuntutan akan pelayanan kesehatan yang baik dan bermutu.Pengeloaan data penjualan dan manajemen stok obat menggunakan sistem secara manual menjadi suatu masalah yang memerlukan sebuah sistem aplikasi peramalan obat yang dapat mengelola data penjualan.Sebagai Instansi kesehatan negeri, Rumah Sakit Bhayangkara perlu mengadakan pembuatan sistem aplikasi peramalan obat-obatan untuk dapat mengelola stok obat dan data penjualan lebih baik.Tujuan penelitian ini adalah meramalkan penjualan obat-obatan di Rumah Sakit Bhayangkara dengan menggunakan metode least square berdasarkan data penjualan sebelumnya dan meringankan petugas dalam pengolaan data persediaan obat.Penelitian ini menggunakan metode least square dengan sampling sebanyak 120 item dan menggunakan Mean Absolute Percentege Error (MAPE) untuk perhitungan error.Hasil peramalan menggunakan metode least square mempunyai error (tingkat kesalahan) yang diukur dengan MAPE adalah 3%. Hal ini menunjukkan metode least square sangat bagus dalam meramalkan stok obat masa yang akan datang. Hasil akhir dari penelitian ini diharapkan dapat membantu proses perhitungan peramalan obat masa datang secara mudah, memperkecil kesalahan, dan menghasilkan ramalan yang akurat dan cepat.
The Department of Environment and Forestry, Pollution and Environmental Damage Control Division, has an active role in monitoring water quality in Riau Province. The rivers that are still monitored and managed are Kampar River, Siak River and Indragiri River. Division of Environment Pollution calculates river quality status manually using Microsoft Excel, this is not maximally done since this important information should be processed quickly. Division of water pollution must determine the right calculation to get the results of the water quality status. Because of many calculation formulas set by the government, the commonly used method is the STORET method and the Pollution Index. So, in overcoming the problem of classification, the researcher proposes the use of learning methods that can predict or determine the status of water quality with classification techniques on data mining that is Modified K-Nearest Neighbor (MKNN) which is a modification of K-NN. The calculation of the MKNN algorithm produced the highest accuracy of 85.10% at K = 5 using STORET result data as training data. While, using the Pollution Index data results, the highest accuracy is 76.92% at K = 1. Based on the analysis with attribute analysis, the attributes that influence the determination of river water quality are BOD, COD, NH3, Fecal Coli and Total Coli. This result can be taken into consideration by the Division of Environmental Pollution in the process of overcoming and reducing pollutant overload that exceeds quality standards.
This study determined the general form of the trace of the triangular matrices n × n with the power of positive integer. Before obtaining the general form of the trace of triangular matrices (upper triangle and lower triangle) n × n with the power positive integer, first obtain the general form of the triangular matrices n × n with power positive integer. Obtaining the general form of the triangular matrices n × n with the power positive integer is carried out by determining of the triangular matrices from power two to power eight. It is further suspected that the general form of a triangular matrices n × n with the power of a positive integer and prove it using mathematical induction. Finally, a triangular matrices trace n × n with the power of a positive integer is obtained with direct proof based on the general form of the matrices has been obtained. Given the application trace of the triangle matrices n × n with power positive integer by an example.
This study aims to explain the application of a scientific method in teaching English at Riau Province's State Islamic Senior High School 2 (MAN 2). This is a descriptive qualitative study. This study includes one instructor and students from class X. MS.1. Techniques for gathering data include observation, interviews, and documentation. Techniques for data analysis include data reduction, data display, and data verification. The findings of this study suggest that the scientific approach is being used in the teaching of English at State Islamic Senior High School 2 in Riau Province, with the five phases being watching, inquiring, experimenting, associating, and communicating. There are various issues that either stymie or help use the scientific approach in teaching English topics. The time required in five components of the scientific method is an impediment. The next impediment is the material used. Factors that aid in implementation are; interesting material and student effectiveness.
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