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21st century learning is required to be technology-based to balance the demands of the millennial era with the aim that students will become accustomed to 21st century life skills. The 21st century with the rapid development of information and technology also demands changes and adjustments in learning evaluation activities, one of which is based on computer-based tests ( CBT). This study aims to develop e-learning for General Chemistry courses on organic materials based on CBT and developed through the ADDIE model. This study produced a book and e-learning of General Chemistry on organic material based on a computer based test (CBT) and has been declared valid (appropriate) and proven effective to improve student HOTS achievement. The validity is met qualitatively based on the assessment of the expert validator and the effectiveness is met based on the implementation of CBT-based e-learning in organic learning as well as evidenced by the results of statistical hypothesis testing with a probability value of

Various types of applications of computer-aided technology have begun to be used in the learning process. The application when viewed from the way it is presented and the goals to be achieved include tutorials, namely the presentation of the material in stages, a drill that aims to help students master the material that has been learned before, as well as simulations and games, namely exercises in applying the knowledge and skills that have just been learned. One form of computer-based learning media that can be used is hypermedia. Hypermedia refers to computer software that uses elements of text, graphics, video, and audio that are connected, which can make it easier for users to switch to information. Communication between students and computers in Computer Assisted Instruction includes several stages, namely: (1) The computer presents the subject matter, (2) The learner studies the material, (3) the computer asks questions, (4) The learner gives a response, (5) The computer checks the response, if it is judged to be correct, the computer presents the next material, but if it is judged to be wrong, the computer gives the correct answer along with the explanation. The application of Computer Assisted Instruction in the development of learning hypermedia produces a product, namely learning hypermedia on digital image material. In testing the effectiveness of hypermedia products, students are carried out through post-testing. The results of the post-test obtained 75% of the results stated that the digital image learning hypermedia product was effective for use.

Revolution 4.0 requires college students to be able to have skills in solving problems. The rapid development of technology and the outbreak of the COVID-19 pandemic require the learning process is done online. This is certainly very different from the face-to-face learning process before the pandemic era. The object of this research is Learning Planning e-book based PBL. E-book developed using the Kvisoft Flipbook Maker application. Students' perceptions of the developed e-book learning media with Kvisoft Flipbook Maker application based PBL on Learning Planning course is included in the very good category with an average score of 4.34. While, regarding the effectiveness of the e-book learning media developed with the PBL-based Kvisoft Flipbook Maker application in the Lesson Planning course, there is an increase after using the e-book learning media compared with before using the e-book. After using the e-book learning media obtained a total of 2690 with an average 84.06 on the very good criteria but before using the e-book obtained a total of 1850 with an average of 57.81 being in the deficient criteria.

Penelitian ini bertujuan untuk mengembangkan multimedia pembelajaran interaktif pada matakuliah penggunaan dan pengaturan motor listrik. Pengembangan media interaktif ini bertujuan untuk menyediakan alternatif media pembelajaran yang dapat memfasilitasi mahasiswa untuk belajar secara aktif, kreatif dan mandiri tanpa adanya keterbatasan ruang, waktu ataupun adanya pendidik. Penelitian ini menggunakan model pengembangan ADDIE yang terdiri dari 5 tahapan utama yaitu: (1) Analisis, (2) Perancangan, (3) Pengembangan dan (4) Implementasi dan (5) Evaluasi. Rancangan desain multimedia pembelajaran interaktif dibuat dengan menggunakan software Adobe Flash Pro CC. Dalam penelitian ini, teknis analisis data yang digunakan yaitu teknik analisis deskriptif yaitu mendeskripsikan tingkat validitas produk yang dihasilkan. Berdasarkan hasil keseluruhan validasi ahli materi memperoleh rata-rata sebesar 4,73, maka hasil validasi terhadap produk multimedia pembelajaran interaktif dari para ahli materi tersebut dikategorikan sangat baik. Hasil keseluruhan validasi ahli media memperoleh rata-rata sebesar 4,75, maka hasil validasi terhadap produk multimedia pembelajaran interaktif dari para ahli media tersebut dikategorikan sangat baik. Kata Kunci: Multimedia Pembelajaran Interaktif, Motor Listrik, Model ADDIE Abstract: This study aims to develop interactive multimedia learning in the course of using and regulating electric motors. The development of interactive media aims to provide alternative learning media that can facilitate students to learn actively, creatively and independently without any limitations of space, time or the presence of educators. This study uses the ADDIE development model which consists of 5 main stages, namely: (1) Analysis, (2) Design, (3) Development and (4) Implementation and (5) Evaluation. The interactive learning multimedia design design is made using Adobe Flash Pro CC software. In this study, the technical data analysis used is a descriptive analysis technique, which describes the level of validity of the product produced. Based on the overall validation results of material experts obtained an average of 4.73, the validation results of interactive learning multimedia products from these material experts are categorized as very good. The overall validation results of media experts obtained an average of 4.75, so the validation results of interactive learning multimedia products from these media experts are categorized as very good. Keywords: Interactive Learning Multimedia, Electric Motor, ADDIE Model

Nowadays Indonesia is facing the challenges with the very high growth of electrical energy needs. The increased has not been followed by the growth of power generation. Various policies have been carried out by the government include the use of renewable energy, which refers to Presidential Decree No. 5 in 2006 on National Energy Policy by setting the contribution target of renewable energy in the national primary energy mix by 17% in 2025 and electricity projects of 35,000 MW. However the focus of policy is not to touch the electricity management sector that actually has a large contribution in performing electrical energy savings. One of them is the implementation of smart grid systems. Smart grid is a continuation of the current system to the next generation vision that combines the use of sensors, communications, computing and control capabilities in some form to improve the overall functioning of the electricity distribution system. Smart grid technologies is the key to use energy resources efficiently distributed. Moreover the smart grid may encourage the application of renewable energy through distributed generation massively. The main focus in this paper is to discuss the prospects, opportunities and challenges in the implementation of smart grid in power distribution systems to improve efficiency and accelerate the use of renewable energy in Indonesia.

Ilmu kimia termasuk dalam rumpun sains dan merupakan salah satu cabang sains yang mencakup konsep, aturan, hukum, prinsip dan proses. Proses dan pembelajaran kimia dapat menghasilkan manusia yang berkualitas dengan menunjukkan kesadaran kimia dan keterampilan berpikir tingkat tinggi yang dapat memunculkan sumber daya manusia yang mampu berpikir kritis, berpikir kreatif, mengambil keputusan dan memecahkan masalah. Studi ini bertujuan untuk mengetahui pengaruh implementasi bahan ajar kimia umum online terintegrasi media dalam meningkatkan HOTS mahasiswa. Penelitian ini termasuk penelitian kuasi eksperimen dengan menggunakan desain faktorial 2×2. Hasil penelitian menunjukkan bahwa terdapat perbedaan HOTS antara kelompok mahasiswa yang diberi pembelajaran menggunakan bahan ajar kimia umum online terintegrasi media dibandingkan kelompok mahasiswa yang diberi pembelajaran tanpa bahan ajar kimia umum online. Terdapat perbedaan HOTS mahasiswa ditinjau dari kemampuan awalnya yaitu kelompok mahasiswa yang memiliki kemampuan awal tinggi memperoleh nilai HOTS lebih tinggi dibandingkan mahasiswa yang memiliki kemampuan awal rendah. Tidak terdapat interaksi antara pembelajaran dengan kemampuan awal terhadap HOTS mahasiswa. Hal ini sekaligus mengindikasikan bahwa penerapan pembelajaran yang diterapkan dan kemampuan awal yang dimiliki mahasiswa secara terintegrasi tidak berpengaruh signifikan terhadap HOTS mahasiswa. Kata kunci : Bahan Ajar Online, Media, Kimia Umum, Kemampuan Awal, HOTSEnglish translation. Abstract: Chemistry belongs to the science group and is one of the branches of science that includes concepts, rules, laws, principles and processes. Chemical processes and learning can produce qualified humans by demonstrating high-level chemical awareness and thinking skills that can give rise to human resources capable of critical thinking, creative thinking, decision-making and solving problems. This study aims to find out the influence of the implementation of integrated online chemical teaching materials media in improving student HOTS. This research included quasi-experimental research using 2×2 factorial design. The results showed that there was a difference in HOTS between the group of students who were given learning using integrated online general chemistry teaching materials compared to the group of students who were given learning without general chemistry teaching materials online. There is a difference in student HOTS judging from the initial ability, namely the group of students who have high initial ability to get higher HOTS scores than students who have low initial ability. There is no interaction between learning and initial ability for student HOTS. This also indicates that the application of applied learning and the initial abilities possessed by students in an integrated manner have no significant effect on student HOTS. Keywords : Online Teaching Materials, Media, General Chemistry, Initial Ability, HOTS

A lot of data is misused without the data owner being aware of it. Software developers must ensure the security user data on their system. Due to the size of the market that houses data, the security of record databases must be of great concern. Cryptographic systems or data encryption can be used for data security. The Merkle-Hellman Knapsack algorithm is included in public-key cryptography because it uses different keys for the encryption and decryption processes. This algorithm belongs to the NP-complete algorithm which cannot be solved in polynomial order time. This algorithm has stages of key generation, encryption, and decryption. The results of this study secure database records from theft by storing records in the form of ciphertext/password. Ciphertext generated by algorithmic encryption has a larger size than plaintext.

Topography and geographical conditions in Indonesia are very supportive in the effort to use solar energy as a producer of electrical energy. In this research, Dye Sensitized Solar Cell (DSSC) was fabricated using the doctor blading deposition method for coating TiO2 onto the substrate. The research focused on the effect of varying TiO2 thickness. TiO2 as an electron jumping pathway and binders for dye molecules, dye to absorb photons which will help generate electricity. the iodide / triiodide redox pair as electrolyte, and carbon as the counter electrode on the DSSC. TiO2, organic dyes, electrolytes, and counter electrodes are arranged and combined with a layered structure as a donor-acceptor layer. In testing the output power measurement using the Internet of Things, where testing cells at a thickness of 292 micrometers using a 7 watt LED lamp produces the maximum power reaches 4429.8 x 10-9 W.

The source of science is still dominated by books, although with the internet students get information with diverse scientific fields, but actually the information comes from material in the book. To be able to master a material from a book, students must first be able to read and understand well. Nowadays software is growing very rapidly. The world of education has also used software to create interactive learning application methods with multimedia concepts. This can help overcome, the level of difficulty experienced by students, in order to be able to attract student learning interest, so that it can automatically improve the learning process to be more active and effective. Actually this method has been widely used and has good benefits in learning. As for the achievements of this study to assist students in learning and understanding the learning of data security techniques, this is a solution in several learning problems, namely an explanation that is too fast, a conducive atmosphere, time, learning media and student interest.

encarian adalah proses pencarian solusi di dalam suatu permasalahan sampai solusi atau tujuan ditemukan, atau pergerakan di state-space untuk mencari lintasan dari initial-state ke goal-state. Dalam sebuah permainan TIC TAC Toe proses pencarian ruang keadaan tidak cukup untuk mengotomasikan tingkah laku pemecahan masalah, pada setiap situasi tersebut hanya terdapat sejumlah pilihan langkah yang terbatas yang boleh dilakukan oleh seorang pemain. Masalah-masalah yang akan dihadapi dapat dipecahkan dengan melakukan pencarian (search) dari antara pilihan-pilihan yang ada, terdukung oleh pandangan cara penyelesaian yang biasa dilakukan. Best First Serach bekerja dengan cara melakukan pencarian pada sebuah Graf Berarah yang setiap simpulnya menggambarkan sebuah titik di dalam suatu ruang problema.

Technological development affect on aspects of education that impact on learning activities. In computer networks learning, there is still rarely media use which has an impact on students’ understanding of how to install computer networks. Current mobile phones have many features that can be used to play games, watch videos, listen to music, personal assistant, find information, GPS, and many more. One of the interesting technologies that can be developed on mobile phones is Augmented Reality. Augmented Reality (AR) is a technology that combines two-dimensional or three-dimensional virtual objects into a real three-dimensional environment and then projects these virtual objects in real time. This research discusses the development of learning media Augmented reality of computer network installation. The purpose of this research is to develop augmented reality learning media and build media that makes it easier for students to understand the process of installing computer networks that becomes an alternative as a learning media. The method used is Research and Development (R&D).

Online book stall is one form of e-commerce in cyberspace, all the time the sale and purchase transactions of books can be done at any time, but along with the development of online transactions, data controls should also be improved. To avoid data from damage caused by irresponsible people, it is necessary to secure data by applying cryptography to the data. In modern times there are many methods or algorithms that can be used to protect and control data from various attacks, but each of these algorithms certainly has its own weaknesses and strengths. The need for long-distance transactions and the importance of data security caused developers to continue to develop cryptography. MD5 algorithm is a one-way hash function that is often used in cryptography, especially in web-based transactions. The MD5 algorithm encodes data in a constant form of 32 bits. All processes from sales and purchase transactions in online bookstores will be safe and durable when the bookstore database is designed in such a way. The book stall database records are encoded with the MD5 algorithm, especially for logging records as a gateway for hackers or hackers to infiltrate. All transactions in the online book kiosk system are detected by the database, the resilience of the database from all attacks is the control of the system from all kinds of damage.

Big data refers to big data, fast data processing, diversity of data structures, and data values so that it is not possible to be processed with outdated methods. Big data technology is used in various industrial sectors. Big data technology is the whole technology that can handle Big Data. Some of the uses of big data are based on the largest significant data traffic sources such as social media, financial transactions, public data, sensor data, and corporate data. The same is the case with the status of so many villages in Indonesia, so it is better to use big data for the classification of village status based on the village index build by involving an algorithm process. This research aims to produce a description of the role of big data in supporting activities in a grouping. The method used is a qualitative approach related to data collection based on scientific work with the source of data information needed to study literature techniques from various studies that have been published in national and international journals. A decision is made that big data has been widely used in different circles to facilitate performance and speed up the decision-making process.

Big data technology is the overall technology that can handle the processing associated with analyzing the data to explore the potential that is in it. Some of the uses of big data are based on the biggest data traffic sources, such as social media, financial transactions, public data, censorship data, and company data. The problem found in the accumulation of village status data that has not been utilized in the decision-making process to determine the status of the next village and the absence of an application to process the data stored in the data database so that a tool is developed to analyze the buildup. The results of this study are to produce a prototype design that is Unified Modeling Language (UML) design, Form Design, and Database Design that will be used to develop Big Data Technology in determining the classification of village status based on the Village Build index.

Data mining is a technique of extracting information that has not been known before in a collection of data in the database. Data mining has been applied in various fields that require extracting information, some of the work that can be generated with data mining is classification, prediction, and data grouping. In this study, an analysis of village data collection was carried out to explore the potential or knowledge of the data that has been presented with the main objective of producing a grouping of village status. To support clustering or grouping activities the K-means algorithm used with the general process is to carry out the modeling process without supervision and is one of the methods for grouping data with a system partition, with the principle of allocating each data to the centroid or the closest average, work steps conducted in support of this research is to collect data related to the analysis of data grouping and proceed with the calculation process in accordance with the work steps of the K-means algorithm, the amount of data used as a test of 303 villages scattered in the old Padang regency. The results of calculations by displaying a new group of Cluster 0 is occupied by 120 villages, cluster 1 with a total data of 123 villages, Cluster 2 with a total of 6 villages, cluster 3 with a total of 33 villages while cluster 4 with a total of 21.

Data confidentiality is an important aspect of information systems. In case of that we need an application to maintain data confidentiality. This study aims to compare two methods of data security systems, namely using the RC4A algorithm which is a symmetric key cryptographic algorithm and the RSA algorithm which is an asymmetric algorithm with a hybrid process on the RC4A and RSA algorithms to secure the secret key of RC4A and speed up the encryption process of RSA. The study uses a comparative test on two algorithm methods, according to data security system parameters. Data is encrypted with the RC4A algorithm and the RC4A key obtained from KSA RC4A will be encrypted with RSA before sending to the receiver. The test results get Hybrid cryptosystem RC4A-RSA faster in completing the encryption process than RSA. Furthermore, the RC4A key can be secured by being encrypted using the RSA algorithm.

Freedom of opinion through social media is frequently affect a negative impact that spreads hatred. This study aims to automatically detect Indonesian tweets that contain hate speech on Twitter social media. The data used amounted to 4,002 tweets related to politics, religion, ethnicity and race in Indonesia. The application model uses classification methods with machine learning algorithms such as Naïve Bayes, Multi Level Perceptron, AdaBoost Classifier, Decision Tree and Support Vector Machine. The study also compared the performance of the model using SMOTE to overcome imbalanced data. The results show that the Multinomial Naive Bayes algorithm produces the best model with the highest recall value of 93.2% which has an accuracy value of 71.2% for the classification of hate speech. Therefore, the Multinomial Naïve Bayes algorithm without SMOTE is recommended as the model to detect hate speech on social media.

Academic loads in writing a thesis cause difficulties to students to complete their studies. This problem can be solved with the application of an expert system with early detection of depressive final-year students that compares Certainty Factor method and Dempster-Shafer method. Certainty Factor method used to measure facts certainty or rules in defining the level of expert confidence, while the Dempster-Shafer method combines uncertainty that has characteristics according to the way of thinking of experts but has a mathematical basis. The purpose of comparing these methods is to get the most appropriate and best method for early detection of depression. The methodology used in this study is a comparative test between two methods, with a mechanism (1) Collecting data related to the depression of final year students; (2) Data acquisition and weighting of confidence values; (3) Calculate formulations from both methods; (4) Perform a comparative test to obtain conclusions. Certainty Factor method is the most appropriate and the best model in early detection of depression, because Certainty Factor method revealed that the more symptoms are given, the higher the probability of detection of depression.

encarian adalah proses pencarian solusi di dalam suatu permasalahan sampai solusi atau tujuan ditemukan, atau pergerakan di state-space untuk mencari lintasan dari initial-state ke goal-state. Dalam sebuah permainan TIC TAC Toe proses pencarian ruang keadaan tidak cukup untuk mengotomasikan tingkah laku pemecahan masalah, pada setiap situasi tersebut hanya terdapat sejumlah pilihan langkah yang terbatas yang boleh dilakukan oleh seorang pemain. Masalah-masalah yang akan dihadapi dapat dipecahkan dengan melakukan pencarian (search) dari antara pilihan-pilihan yang ada, terdukung oleh pandangan cara penyelesaian yang biasa dilakukan. Best First Serach bekerja dengan cara melakukan pencarian pada sebuah Graf Berarah yang setiap simpulnya menggambarkan sebuah titik di dalam suatu ruang problema.