Distributed and various systems on learning environment are the current issues to produce big data and heterogeneity data problem. Heterogeneity on learning environment is about numerous learning applications and various learning information to support a learning process in educational institutions IntroductionImplementation of Electronic system on learning environments is becoming popular and very important in today's scenario because of their flexibility, convenience and accessibility to support learning activities in traditional learning process [1], [2]. There is numerous and various application systems on learning environment from different function and with specific purpose, this is usually known as heterogeneity on learning environment. The heterogeneity may be the difference in: User interface, Platform, Application system, Database system, Data representation etc.The heterogeneity of data is a current issue in distributed and various information sources. Development of applications and information systems makes heterogeneity problems grow up and more complex, and from that problems need to find the best solution [3], [4]. Data on learning environment is increasingly grown up and becoming more meaningful to support learning activities [5], [6].Heterogeneity of data on learning environment is about different data representation and types of information or data in different and numerous applications to support a learning process in education institutions [7]. Different applications are develop for specific purposes based on function and feature that included on that applications [5]. A lot of applications developed on learning environment, such as Teaching and learning online application, Library application system, Question bank system, Student management and payment system, Academic information management system, Student registration system and subject course evaluation system. In this paper, researchers are using UTM (Universiti Teknologi Malaysia) as a case study to analyze the data heterogeneity problem on university environment. With numerous applications that develop with various system and database schema, produces a big data with heterogeneity problem on that environment.
The concept of Traveling Salesman Problem (TSP) used in the discussion of this paper is the Traveling Salesman Problem with Time Windows (TSP-TW), where the time variable considered is the time of availability of attractions for tourists to visit. The algorithm used for optimizing the solution of Traveling Salesman Problem with Time Windows (TSP-TW) is a genetic algorithm. The search for a solution for determining the best route begins with the formation of an initial population that contains a collection of individuals. Each individual has a combination of different tourist sequence. Then it is processed by genetic operators, namely crossover with Partially Mapped Crossover (PMX) method, mutation using reciprocal exchange method, and selection using ranked-based fitness method. The research method used is GRAPPLE. Based on tests conducted, the optimal generation size results obtained in solving the TSP-TW problem on the tourist route in the Province of DIY using genetic algorithms is 700, population size is 40, and the combination of crossover rate and mutation rate is 0.70 and 0.30 There is a tolerance time of 5 seconds between the process of requesting distance and travel time and the process of forming a tourist route for the genetic algorithm process.
Steganography is a technique of hiding a secret or confidential information in another message so that other people are not aware of the existence of a hidden message. In order for hidden messages or information that it's safer to use the science of cryptography for data encryption. So that the data or messages can not be understood by an unauthorized person who managed to access the data. This application uses methodologies Rappid Guidelines for Application Engineering (Grapple), which consists of Requirement gathering, Analysis, Designs, Development, and Deployment. This application was built using the Java programming language with tools NetBeans IDE 7.0. The algorithm used in this application is the steganography algorithms Least Significant Bit and cryptographic algorithms Vigenere Cipher. The final results of this study is an application of steganography in images by using the method of least significant bit (LSB) and vigenere that can be run on a computer. The image can be used in this application is the image format JPG, PNG, GIF, and BMP. This application can insert text in the image and can perform encryption and decryption at the message you want to insert.
AbstrakPenelitian ini bertujuan untuk mengevaluasi kesesuaian rencana pembelajaran guru, kesesuaian pembelajaran dengan rencana pembelajaran guru, kelengkapan unsur-unsur pendekatan saintifik di dalam proses pembelajaran, kendala guru dalam menerapkan pendekatan saintifik, dan strategi guru dalam mengatasi kendala penerapan pendekatan saintifik. Penelitian ini dilaksanakan dengan menggunakan metode penelitian deskriptif kuantitatif. Teknik pengumpulan data penelitian ini adalah observasi, angket, wawancara, dan dokumentasi. Hasil penelitian ini menunjukkan bahwa: (1) kesesuaian RPP guru dibandingkan dengan kriteria RPP Kurikulum 2013 berada dalam kategori baik dengan persentase sebesar 86,41% (2) kesesuaian proses pembelajaran dengan rencana program pembelajaran berada dalam kategori baik dengan presentase 82%; (3) kelengkapan unsur-unsur pendekatan saintifik di dalam proses pembelajaran tergolong kurang dengan presentase 48%; (4) kendala guru dalam menerapkan pendekatan saintifik adalah dalam melaksanakan kegiatan asosiasi, yaitu berada dalam kategori kurang dengan presentase 7%; (5) strategi guru dalam mengatasi kendala penerapan kegiatan asosiasi adalah dengan melatih siswa untuk memecahkan masalah, memfasilitasi siswa dengan media pembelajaran; memberikan reward, menyediakan sumber belajar tambahan, dan mendorong siswa untuk berdiskusi dengan teman sekelasnya.AbstractThis study aims to evaluate the suitability of the teacher's lesson plan, the suitability of learning with the teacher's lesson plan, the completeness of the elements of the scientific approach in the learning process, the obstacles of the teacher in applying the scientific approach, and the teacher's strategy in overcoming the obstacles to the application of the scientific approach. This research was conducted using quantitative descriptive research methods. The data collection techniques of this study were observation, questionnaires, interviews, and documentation. The results of this study indicate that: (1) the suitability of the teacher's RPP compared to the 2013 curriculum RPP criteria is in the good category with a percentage of 86.41% (2) the suitability of the learning process with the learning program plan is in the good category with a percentage of 82%; (3) the completeness of the elements of the scientific approach in the learning process is classified as lacking with a percentage of 48%; (4) the teacher's obstacle in applying the scientific approach is in carrying out association activities, which are in the less category with a percentage of 7%; (5) the teacher's strategy in overcoming obstacles to the application of association activities is to train students to solve problems, facilitate students with learning media; provide rewards, provide additional learning resources, and encourage students to discuss with their classmates.
Sabun kertas sendiri merupakan salah satu inovasi produk sabun yang tipis seperti kertas, sabun kertas ini akan larut bila terkena air serta digosokkan pada tangan akan mengeluarkan busa. Sabun kertas umumnya digunakan sebagai sabun cuci tangan sekali pakai karena ukurannya yang kecil dan tipis sehingga mudah dibawa ke mana saja dan cocok digunakan pada saat beraktivitas di luar rumah. Menumbuhkan kreatifitas mengenai cara mendaur ulang kertas bekas menjadi paper soap sebagai solusi praktis membawa sabun untuk tetap menjaga kebersihan tangan jika harus beraktivitas diluar rumah. Metode pengabdian pemberian materi dengan metode ceramah dan tanya jawab, pra dan post test dan praktek pembuatan paper soap dari limbah kertas, terdiri dari anak-anak madrasah di Uswah Al-Islam khususnya kelas MDTA berjumlah 25 orang. Kegiatan ini menghasilkan kreatifitas siswa-siswi berupa sabun yang terbuat dari limbah kertas, dan selanjutnya siswa-siswi diberi soal dalam bentuk essay dengan hasil rata-rata nilai pre test dan post test sebanyak 25 anak adalah 60.72 dan 84.96, dapat dilihat bahwa hasil post test meningkat setelah diberi pelatihan pembuatan paper soap. Pelatihan ini dapat memberikankan kemampuan dan menumbuhkan kreatifitas siswa-siswi membuat paper soap dari limbah kertas yang dapat dimanfaatkan untuk tetap menjaga kebersihan tangan.
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