UIN (Universitas Islam Negeri) Sunan Kalijaga, Yogyakarta: E-Journal Fakultas Sains dan Teknologi
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Sentiment Analysis using Twitter Dataset
No full textApparently Social media sites are becoming increasingly popular, it creates platforms through which organizations, communities, and individuals share and discuss various topics. The reviews and data obtained from these sites are essential for further analysis. In this paper we studied the sentiment classification of 2019 Kenyan 1000 banknote demonetization using Twitter as our source dataset. We perform Multi nominal naïve Bayes classifier algorithm to classify tweets documents. We split our dataset using k-folder validation since we had limited amounts of data, so to achieve unbiased prediction of the model. . We obtained in test data an accuracy of 70.8% when we used unigram model and 64.1% when we applied bigram model. Results show that the model reached to an acceptable accuracy of (71%) on average using unigram model.
Online Public Access Catalogue: Factors Affecting Use E-Catalog
No full textOnline Public Access Catalog (OPAC) is one of the e-catalog information technologies applied in libraries. OPAC is a library information retrieval system that can be accessed online. State Islamic University of Sunan Kalijaga Yogyakarta has been using OPAC since 2012 and OPAC users are increasing from year to year. An information system will be used by users if it suits their needs. The successful implementation of OPAC raises questions about the factors that influence this success. For this reason, this study aims to determine the factors that influence users to use OPAC. Structural Equation Modeling (SEM) is a multivariate statistical technique which is a combination of factor analysis and regression analysis (correlation) which aims to examine the relationships between variables in a model. Processing using SEM will be carried out to find the relationship between the variables to be tested, which variables are interconnected, and are there any unrelated variables. The results of processing the variables using SEM can show what variables attract users to use the e-catalog. Acceptance of information systems can be measured by several evaluation models that have been developed at this time. There are many evaluation models used to measure. Technology Acceptance Model (TAM) is the appropriate model to use for this study, because this study is about the acceptance of a system. In addition, several previous studies used by researchers as references also used TAM as their study method to assess user acceptance of a system. This study modifies TAM, which is used to determine user acceptance of an information system, by adding three exogenous variables, information quality, perceived enjoyment, and user interface. Results of this study proved that information quality, user interface, perceived usefulness, perceived ease of use, and behavioral intention to use, are all factors that influence the actual use of OPAC. Perceived enjoyment is a variable that cannot be proved affects the actual use of OPAC
Internship Program of The Faculty of Science and Technology of UIN Sunan Kalijaga Yogyakarta for Soft Skills Development and Student Competencies
No full textDemand in workplace requires a person not only have a high grade point average but also have sufficient soft skills. The higher demands for labor have prompted UIN Sunan Kalijaga, especially the Faculty of Science and Technology, to make an internship program as a program to equip students with soft skills that will be needed in the workplace. Apprenticeship/internship is a form of education and training that will shape the competence of students. The apprenticeship program is used as an effort to bridge the gap between the theories obtained by students in college and the actual professional conditions in the workplace. This activity should be beneficial for students and alumni because in apprenticeship activities participants have the opportunity to apply the knowledge they have learned in college and learn the ins and outs of professional work standards.The apprenticeship program at the Faculty of Science and Technology UIN Sunan Kalijga Yogyakarta has been carried out for 3 periods. Many activities have been programmed to support the competence of students at UIN Sunan Kalijaga Yogyakarta. This paper would disscus and analyse about the program, its achievement and implications for the student’s competency
The Glycemic Index Value of Hipa 7 and the Determination Method
No full textCarbohydrate content information of food does not enough to describe its physiological effect. Different carbohydrate sources give diverse blood glucose response. The concept of glycemic index (GI) was introduced to fill that gap. It divides food into several classifications according to their postprandial glycemic response. The original method was conducted by observing blood glucose after consuming sample then comparing the result with standard food. Later, miscellaneous in vitro digestion models were developed to mimic the in vivo condition. Rice is one of food types that have various GI which are related to the rice variety and postharvest processing method. There are some varieties that have low or medium GI, the others have higher. Parboiled and brown rice tend to have lower GI compared to their un-parboilled milled rice form. Hipa 7 is hybrid new superior variety that that had been launched by ICRR in 2009 and its milled rice has low glycemic index 49.2. Low glycemic index rice potentially reduced the occurrence of obesity and diabetic mellitus disease
Using Family Taxon as an Indicator of Haram Halal of Reptiles in Animal Systematic Lab Work
No full textHaram halal of an animal are usually refer to the four mahzab in Islamic believe. This study discussed about halal haram of reptile class that will would be connected with its taxon family as an indicator. This research aims to set the family taxon as an indicator in determining halal haram of reptiles Literature study was done, tracing the written manuscript of Islamic and Science journals, books, websites or other relevant sources that can be used as a reference. The study showed that if a species in the family taxon is classified as halal to the Islamic Law, then the rest of the members in the family were considered as halal
Komparasi Kinerja Algoritma BFS, Dijkstra, Greedy BFS, dan A* dalam Melakukan Pathfinding
No full textPathfinding is a computational process in finding the best route between two points or nodes to find the shortest path. This method has many algorithms that can be applied in various fields. In carrying out the pathfinding, speed and distance are considered as important. Through the test diagram, this paper illustrates the execution steps related to the pathfinding algorithm which includes BFS, Dijkstra, Greedy BFS, and A * for comparison. From several studies, the authors identified that execution time and mileage can be used optimally in the comparison process. Input variables as well as media used are 2-dimensional grids and heuristic function calculations. The analogy is carried out on a unity platform with the C# programming language, producing A * as a more flexible pathfinding algorithm to be implemented in various domains
Instalasi dan Evaluasi Sistem Peringatan Dini Banjir Berbasis Sensor Ultrasonik HC-SR04 dan Internet of Things (IoT)
No full textResearch on installation and evaluation of early warning systems based on the HC-SR04 ultrasonic sensor and the Internet of Things (IoT) has been successfully carried out. This study aimed to install and evaluate a flood early warning system based on the ultrasonic sensor HC-SR04 and IoT at a flood monitoring post, Boyong River Yogyakarta. Installation of a flood early warning system based on the HC-SR04 and IoT ultrasonic sensor was carried out by preparing tools and materials, connecting WiFi, and installing the system. Evaluation accuracy of the system was carried out by varying the distance between the sensor and the water surface, namely 5 cm - 200 cm with 5 cm intervals, while testing of precision and success were done by 10 times repeating for each distance variation. The results showed that flood early warning system based on ultrasonic sensor HC-SR04 and IoT has been successfully installed at the flood monitoring post, Boyong River Yogyakarta. In addition, the flood early warning system based on ultrasonic sensor HC-SR04 and IoT was successfully evaluated with an accuracy value 99.95%, repeatability precision 98.75%, reproducibility 99.27%, and success 89.50%
Prototype System of Solar Tracking Design to Optimize the Energy Absorption Based on Arduino
No full textThis research optimizes the absorption of solar energy in solar panels by designing mechanical systems that can move solar panels in the direction of incoming sunlight. Light-sensitive sensors are used to track the sun. The solar tracking system is designed using two axes, namely rotation axis and the tilt axis. Both axes are driven by servo motors based on light-sensitive sensors. The system was developed using an ATmega328 microcontroller unit. The test results found that using solar tracking the amount of energy produced was greater than static solar panels. Radiation generated between solar tracking and static sun can increase by 55.2%.This research optimizes the absorption of solar energy in solar panels by designing mechanical systems that can move solar panels in the direction of incoming sunlight. Light-sensitive sensors are used to track the sun. The solar tracking system is designed using two axes, namely rotation axis and the tilt axis. Both axes are driven by servo motors based on light-sensitive sensors. The system was developed using an ATmega328 microcontroller unit. The test results found that using solar tracking the amount of energy produced was greater than static solar panels. Radiation generated between solar tracking and static sun can increase by 55.2%
How Can Playfair Cipher Secure Data?
No full textCryptography plays an important role in the digital world today. Information can be mathematically secured by the message sender with a key. The intended sender\u27s privacy and recipient\u27s information will be protected from eavesdroppers. The purpose of this paper is to find out how to secure data using a playfair cipher with a 16 X 16 matrix. This algorithm will provide the power to playfair cipher. The encryption and decryption process in cryptography uses keywords that have been agreed upon by the sender and recipient of the message. Entries of this matrix are large and small alphabet letters, numerical characters, and other special characters to construct the contents of the matrix. The characters refer to ASCII from 0 to 255
Multivariable Panel Data Cluster Analysis using Ward Method Gross Enrollment Ratio (GER) Data in West Java in the Year 2015-2018
No full textThe aim of this study is to determine cluster analysis for panel data with multivariable data structures. Choosing a Ward method Choosing a method in a cluster analysis hierarchical technique. Ward method is a method based on Sum Square Error (SSE) with a measure of homogeneity between two objects based on the minimum number of error squares. The measure of similarity used is the Euclidean distance squared. The Ward method is used to add variation between objects in one cluster and maximize variation with objects in another cluster. The steps of the analysis are described in the discussion of this study. The method of implementation uses education gross enrollment rate (GER) data in West Java Province in 2015-2018. The results of the study indicate that the grouping of education GER data in West Java in 2015-2018 using the Ward method produces four clusters. The first cluster consists of five regions, GER for Elementary school, junior and senior high school in the cluster are below the average APK in West Java. The second cluster consists of two regions, in contrast to the first cluster GER for elementary schools in this cluster according to the average GER in West Java but for junior and senior high school GER below the average GER in West Java. The third cluster consists of seven regions, the GER for elementary, junior and senior high schools in this cluster is above the average GER in West Java while the fourth cluster consists of five regions, the GER for elementary and junior high schools in this area is above the average GER in West Java