Cybercrime is a crime committed using equipment connected to the internet. One of the cybercrimes that occured during the COVID-19 pandemic was the spread hoaxes about the COVID-19 vaccine which caused panic in society. Signal Messenger is one of the social media that has become a trending topic since the number of personal data security issues and the emergence of end-to-end encryption features. This research aims to find digital evidence on Signal Messenger application installed on the perpetrator's Android smartphone. This research uses Belkasoft, Magnet AXIOM, and MOBILedit Forensic Express tools and implements the Digital Forensics Research Workshop (DFRWS) framework in each stage of the research experiment. The research was carried out according to the case scenario with 11 predetermined parameters. Digital evidence is found from the Signal Messenger application: application information, account information, chat, pictures, videos, contacts, and stickers. The results of this research indicate that Belkasoft Evidence Center forensic tool is better, with an accuracy rate of 78.69%, while Magnet AXIOM is 26.23% and MOBILedit Forensic Express is 9.84%. The results of this research can be used as a reference for other forensic researchers/experts in handling similar crime cases on the Signal Messenger application to get better results.
The COVID-19 pandemic is one of the factors that has increased the use of social media. One of the negative impacts of using social media is the occurrence of cybercrime. The possibility of cybercrime can also happen on one of the social media platforms, such as the Signal Messenger application. In the investigation process, law enforcement needs mobile forensic methods and appropriate forensic tools so that the digital evidence found on the perpetrator's smartphone can be accepted by the court. This research aims to get digital evidence from cases of spreading the COVID-19 vaccine hoaxes. The method used in this research is a mobile forensics method based on the Digital Forensic Research Workshop (DFRWS) framework. The DFRWS framework consists of identification, preservation, collection, examination, analysis, and preservation. The results showed that the MOBILedit tool could reveal digital evidence in the form of application information and contact information with a performance value of 22.22%. Meanwhile, Magnet AXIOM cannot reveal digital evidence at all. The research results were obtained following the expected research objectives.
Siswa mengalami kesulitan dalam belajar yang ditunjukkan dengan prestasi yang kurang baik dan pengunaan metode pembelajaran yang kurang berpariasi. Sebahagian siswa menganggap tugas rumah tidak penting dan sebahagian mengerjakan tugas rumah dengan baik pada pembelajaran pendidikan agama Islam. Tujuan dalam penelitian ini adalah untuk mengetahui ada pengaruh penggunaan metode resitasi terhadap prestasi belajar Pendidikan Agama Islam SMA Negeri 4 Padangsidimpuan. Penelitian ini adalah penelitian kuantatif deskriptip yang bertujuan untuk menggambarkan ada tidaknya pengaruh antara dua variabel. Populasi dalam penelitian ini adalah kelas X yang berjumlah 73 siswa. Sampel sehingga penelitian ini adalah penelitian populasi. Instrument penelitian yang digunakan adalah angket dan tes. Angket untuk memperoleh data penggunaan metode resitasi dan tes untuk prestasi belajar. Analisis data yang digunakan adalah analisis data deskriptif dengan uji hipotesisnya dengan menggunakan regresi. Hasil penelitian menunjukkan dengan hasil Fhitung sebesar 15,55. Setelah Fhitung diperoleh kemudian dikonsultasikan ke Ftabel sebesar 3,98. Dengan demikian diperoleh Fhitung Ftabel, yaitu 15,55 3,98. Dari hasil pengujian hipotesis dapat diketahui bahwa variabel X memiliki pengaruh terhadap variabel Y yang artinya terdapat pengaruh penggunaan metode resitasi terhadap prestasi belajar pendidikan agama Islam SMA
The quality of education in Indonesia was in the worst position in Asian from 12 countries surveyed in 2010 by PERC, so more efforts by teachers are needed to improve the quality of education. One of the efforts is through the application of good and appropriate learning models to the characteristics of subjects. This study aimed to determine the achievement of learning outcomes of heat transfer subject of students of class VII6 SMP Negeri 2 Ambon through application of a contextual approach in Jigsaw type cooperative learning model. This research was a quantitative descriptive, with 40 students. This study found that the average score of initial achievement was 29.22 (failed qualification). While during the learning process with Jigsaw cooperative learning model, the average cognitive achievement was 83.34 (good qualification), affective was 82.66 (good qualification), and psychomotor was 88.75 (good qualification). While there were formative test results obtained the average achievement score was 74.77 (sufficient qualification), and the average of the final score was 81.71 (good qualification). It can be concluded that the learning process by applying a contextual approach in Jigsaw type cooperative learning model was proven to help students in achieving the learning outcomes of heat transfer subject.
This study aimed to determine the volume of traditional eucalyptus oil from distillation with variations in fluid flow velocity. The method of distillation was distillation with water (water distillation). The material was eucalyptus leaves. To determine the volume of eucalyptus oil produced by distillation, the distillation device was set at the height of the condenser to the source of flow fluid, which was at an altitude of 15 cm, 25 cm, 35 cm, 45 cm, and 55 cm. Variation in the height of the condenser would affect the fluid flow rate. The faster the fluid flow rate, the greater the convection coefficient so that it increased the heat transfer rate. This results in greater volume (capacity) of oil produced. From these experimental results, most volumes of eucalyptus oil obtained from the distillation was obtained at 55 cm of the height of condenser with 3.6 mLof oil volume.
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