Big Data is a collection of data with a large and complex size, consisting of various data types and obtained from various sources, overgrowing quickly. Some of the problems that will arise when processing big data, among others, are related to the storage and access of big data, which consists of various types of data with high complexity that are not able to be handled by the relational model. One technology that can solve the problem of storing and accessing big data is Hadoop. Hadoop is a technology that can store and process big data by distributing big data into several data partitions (data blocks). Problems arise when an analysis process requires all data spread out into one data entity, for example, in the data clustering process. One alternative solution is to do a parallel and scattered analysis, then perform a centralized analysis of the results of the scattered analysis. This study examines and analyzes two methods, namely K-Medoids Mapreduce and K-Modes without Mapreduce. The dataset used is a dataset about cars consisting of 3.5 million rows of data with 400MB distributed in a Hadoop Cluster (consisting of more than one engine). Hadoop has a MapReduce feature, consisting of 2 functions, namely map and reduce. The map function performs a selection to retrieve a key, value pairs, and returns a value in the form of a collection of key value pairs, and then the reduce function combines all key value pairs from several map functions. The results of the cluster quality evaluation are tested using the Silhouette Coefficient testing metric. The K-Medoids MapReduce algorithm for the car dataset gives a silhouette value of 0.99 with a total of 2 clusters.

Universita Mataram conducts Introduction to School Field  aims to allow students of undergraduate education programs to gain factual and contextual educational experience in applying a set of knowledge, attitudes and skills that can support the achievement of professional competency mastery, pedagogic, personality, and social as a whole, which boils down to the formation of prospective teachers or educators who are professional and characterful, and able to apply it in the implementation of education and teaching, both in school and outside the school responsibly

Intisari DSSC (Dye-sensitized solar cells) adalah suatu devais yang mampu mengubah energi matahari menjadi energi listrik dengan memanfaatkan dye ruthenium (N719) sebagai sensitizer. Pada penelitian ini telah berhasil dibuat elektroda kerja berbahan titanium dioksida (TiO2) ukuran nanopartikel berbentuk lapisan yang dideposisikan diatas gelas transparan konduktif FTO (fourine doped-tin oxide) dengan metode spin coating. Dari hasil pengujian menggunakan solar simulator AM 1.5G (100 mW/cm 2 ) diperoleh overall conversion efficiency mencapai 0,298% dengan tegangan open circuit (Voc) sebesar 460 mV, rapat arus short circuit (Jsc) sebesar 7,5 mA dengan fill factor (FF) 0,24.ABSTRACT DSSC (Dye-sensitized solar cells) is a firmware device capable of converting solar energy into electrical energy by utilizing a ruthenium dye (N719) as a sensitizer. In this research has been successfully made the working electrode is made of titanium dioxide ( TiO2) nanoparticles size shaped thin film is deposited on a transparent conductive glass FTO (fourine-doped tin oxide) by the spin coating method. From the test results using AM 1.5G solar simulator (100 mW / cm 2 ) obtained overall conversion efficiency reached 0.298% with an open circuit voltage (Voc) of 460 mV, short circuit current density (Jsc) of 7.5 mA with a fill factor (FF ) 0.24. Energi merupakan kebutuhan yang sangat penting dalam memenuhi segala bentuk kebutuhan hidup di dunia, sehingga kebutuhan energi di dunia semakin hari semakin meningkat. Oleh sebab itu, pencarian sumber energi alternatif yang dapat diperbaharui (renewable), murah dan ramah lingkungan menjadi tuntutan yang tidak dapat ditunda lebih lama lagi saat ini sehubungan dengan menyusutnya cadangan bahan bakar fosil secara siginifikan dalam beberapa tahun belakangan ini, serta efek rumah kaca dan pemanasan global yang ditimbulkan selama proses pengunaannya. Kementerian Energi dan Sumber Daya Mineral (ESDM) Republik Indonesia memperkirakan cadangan minyak bumi di tanah air hanya mencukupi untuk 18 tahun ke depan, sementara gas bumi dan batubara masingmasing hingga 61 dan 147 tahun ke depan [1]. Salah satu energi alternatif yang mempunyai potensi sangat besar namun belum dimanfaatkan secara maksimal adalah sel surya (photovoltaic/solar cell) yang mampu mengkonversi sinar matahari secara langsung menjadi energi listrik. DSSC berbeda dengan sel surya komersial berbasis silikon, dimana pada sel surya DSSC ini terjadi pemisahan antara fungsi penyerapan cahaya dengan transport pembawa muatannya [2], DSSC memiliki * E-MAIL: danylastchild07@gmail.com beberapa keunggulan dibandingkan dengan sel surya komersial berbasis silikon diantaranya murah, pembuatannya mudah, serta memiliki efisiensi tinggi walau pada intensitas cahaya yang kurang [3]. Komponen-komponen didalam DSSC pada umumnya terdiri dari elektroda kerja berupa elektroda foto-anoda dari bahan semikonduktor (misalkan: TiO 2 dan ZnO), dye sebagai sensitizer yang menyerap cahaya matahari, pasangan redox berupa triodide/iodide, dan counter elektroda berbahan Plat...

An inventory system is a system that manages data on items owned by an office. A good inventory system will help a company manage data on goods owned by the company. Not only do big companies need an inventory system, but small offices also need an inventory system. Likewise, with the Health Center, managing data such as drugs, medical equipment, stationery, etc., requires a good warehouse inventory system. Therefore, this service activity aims to develop and train the Health Center Warehouse Inventory application. The partner of this activity is the Sakra Community Health Center (administrative staff). The methods used are lectures, mentoring, and direct practice using applications. The result of this activity is the production of warehouse inventory system software for the Sakra Health Center. In addition, the Sakra Health Center's administrative staff can also run the software