Sistem Jurnal UNU Purwokerto (SJU)
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Pemanfaatan Daun Sirsak sebagai Larutan Nutrisi Tanaman menuju Pertanian Organik Berkelanjutan
Full text linkSoursop leaf is a plant with a tree height of about 8 meters. Brown woody stems, round, branched. It has egg-shaped or lanceolate leaves, pointed tip, flat edge, tapered base, pinnate stalk, 5 mm long stalk, yellowish green. Flowers are located on stems or twigs, small petals, whitish yellow, hairy stamens. The fruit is not a true fruit, which is called "fruit" is actually a collection of fruits (aggregate fruit) with a single seed that coincides with each other and loses the boundaries between the fruits. Liquid organic fertilizer is a fertilizer that is available in liquid form, Liquid Organic Fertilizer can be interpreted as a fertilizer that is made naturally through a fermentation process to produce a solution of decay from plant residues, as well as animal or human waste. For some people, liquid organic fertilizer is better to use because it avoids chemicals/ synthetics and has a good impact on health. Liquid organic fertilizers consist of microorganisms that play an important role in helping plant growth.
Keywords: Soursop Leaves, Liquid Organic Fertilizer, Sustainable Agricultur
Analisis jenis makanan ikan sidat (Anguilla spp.) di Sungai Air Manna Bengkulu Selatan
Full text linkEel (Anguilla spp.) is catadromous with high economic values. Research on the analysis of eel's stomach contents provides information on its food and feeding habits. This study aimed to analyze the type, volume, frequency, and index of food preponderance of eel in the Manna River based on its length and weight. The method used in this research is a survey method by collecting samples of eels by purposive sampling. Sampling was carried out in September 2019. The results showed the eels ate five types of food: crabs, shrimps, insect larvae, plankton, and litter. Based on the food volume (Vi), crab kinds were the most commonly eaten by the eels. The food-frequency of occurrence (Oi) for eel is most often found in the types of crabs, shrimps, and plankton. Index of Preponderance (IP) showed that this eel's main food was crabs, while the complimentary food was shrimps, insect larvae, and plankton. Litter, on the other side, was an addition to all types of food obtained
Analisis Pemahaman Konsep dan Kesulitan dalam Memahami Mata Kuliah Kalkulus 1 Mahasiswa Program Studi Matematika
Full text linkThe purpose of this study is to find out: (1) understanding of the concept of calculus 1 for students of the mathematics study program, (2) what are the things that cause students difficulties in understanding the concept of calculus. In this research, the method used is qualitative with descriptive methods. Where the technique used to determine the source of data is the purposive sampling technique. The data taken in this study consisted of two, namely the results of the conceptual understanding test and the interview results. Triangulation methods will then validate the test results. The conclusions of this study's results are: first, the understanding of the concept of calculus 1 in mathematics study program students consists of 13.64% in the high category, 40.91% in the medium category, and 45.45% in the low category. Second, three things cause students difficulties in understanding the concept of calculus 1; they are the methods or learning models used by lecturers, student's lack of questions' exercise by the students, student's lack of repeating the materials given by the lecturer. Besides all of that, basic mathematical concepts during high school are also insufficient to go through the next level of calculus learning
ANALISIS PENGGUNAAN PERSAMAAN KUADRAT MATEMATIKA SEBAGAI KUNCI PADA MONOALPHABETIC CIPHER
Full text linkMonoalphabetic cipher is an encryption substitution method that maps each alphabet to another alphabet randomly. This method is different from the Caesar cipher, which only shifts the alphabet. In addition, in monoalphabetic ciphers, substitution tables are used to store keys, where these keys are useful for mapping alphabets from plaintext to ciphertext. However, in reality the use of substitution tables still has difficulties. Based on this, an idea emerged to analyze whether the substitution table could be replaced by a mathematical equation to be used as a key to the monoalphabetic cipher. And in this case, the mathematical equation used is a quadratic equation.
 
OPTIMASI PRODUKSI KERIPIK PANGSIT MENGGUNAKAN LOGIKA FUZZY METODE MAMDANI
Full text linkOptimal profit can be obtained from maximum sales by using minimal costs. Besides being able to meet existing demands, the use of costs is also a major factor in determining optimal results. Therefore, it is necessary to plan the number of products in a company in order to meet market demand. Factors that need to be considered are demand and supply of goods. The inventory factor of a production item is difficult to monitor when using manual calculations. For that we need a method to predict the availability of manufactured goods effectively. The method used is the calculation of fuzzy logic. This study uses the Mamdani fuzzy logic technique method. The result of this research is a calculation of the production of kripang (dumpling chips) based on calculations based on Mamdani fuzzy logic. The calculation that is built can help the company determine the amount of production in accordance with consumer demand so that the demand for kripang in Sidabowa Village is fulfilled and the amount produced by the producer is more optimal.
Keywords : Fuzzy Logic, Mamdani, Optimizatio
TEKNIK PEWARNAAN GRAF PADA PENJADWALAN PIKET OSIS DENGAN ALGORITMA WELCH-POWELL PADA SMP NEGERI 2 KEMRANJEN
Full text linkTeori graf digunakan untuk mempresentasikan objek-objek diskrit dan hubungan antar objek tersebut. Representasi visual dari sebuah graf adalah dengan menyatakan objek dengan sebuah titik, sedangkan hubungan antar objek dinyatakan dengan garis. Dalam kehidupan sehari-hari penggunaan teori graf salah satunya menentukan penjadwalan menggunkaan pewarnaan graf. Pewarnaan yang dimaskud adalah pewarnaan simpul. Hal tersebut dipadukan dengan Algoritma Welch-Powell. Algoritma Welch-Powell dapat digunakan untuk menentukan sebuah penjadwalan berdasarkan derajat tertinggi dari simpul-simpulnya. Keunggulan algoritma tersebut dapat menyelesaikan secara efisien, tidak terjadi kesamaan jadwal antar siswa pada satu kelas yang sama. Cara penentuannya dengan melihat jumlah derajat dari sebuah simpul yang terbesar sebagai pewarnaan pertama
PENENTUAN JALUR PENGIRIMAN PESANAN MENGGUNAKAN METODE TRAVELLING SALESMAN PROBLEM (TSP) DENGAN ALGORITMA HEURISTIK DI KPRI SEHAT RS MARGONO SOEKARJO PURWOKERTO
Full text linkIn everyday life, there are many problems that can be solved and brought into the form of a diagram consisting of points and lines, for example looking for a salesman route (Traveling salesman problem (TSP)). This problem is classified as having very many possible answers. The Heuristic Algorithm is an algorithm that produces the best solution to problems that are part or intersect with a more complex problem where delivery of orders from producers to consumers is maximized. This algorithm looks for the minimum spanning tree of all vertices. Then, forming a circuit that has been passed more than once, so that it is expected to provide optimal solutions in solving the problem of order delivery. With this method, we can find the fastest distance to deliver orders to consumers. This not only makes it easier to find the best route that can speed up delivery of orders to consumers, but also can keep food good because it reaches consumers faster at Rs Margono Soekarjo Purwokerto
ALGORITMA KRUSKAL MENENTUKAN LINTASAN TERPENDEK EFEKTIF CALL SALESMAN
Full text linkThe management of distribution visits is a crucial problem experienced by goods product companies (distributors). There needs to be an optimal pattern to determine the shortest route in the goods distribution process. The data obtained are in the form of shop names, distances, and travel routes at PT BSP. The data obtained are then represented in the form of an image and look for the minimum spanning tree of the distribution line. From the calculation of the distance salesmen usually cover a distance of 16,660 m, while using the Kruskal algorithm it is obtained 14,110 m. So there is a savings in the distance obtained along the 2560 m. This study shows that using the Kruskal algorithm is more optimal because the steps taken are more precisely applied in the salesmen's journey problem