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All Journal Jurnal Matematika EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi dan Bisnis Communicatus: Jurnal Ilmu Komunikasi BAREKENG: Jurnal Ilmu Matematika dan Terapan Paedagoria : Jurnal Kajian, Penelitian dan Pengembangan Kependidikan Andragogi: Jurnal Diklat Teknis Pendidikan dan Keagamaan EDUKATIF : JURNAL ILMU PENDIDIKAN Indonesian Journal of Electrical Engineering and Computer Science G-Tech : Jurnal Teknologi Terapan Majalah Ilmiah Matematika dan Statistika (MIMS) Jurnal Riset Pembelajaran Matematika Sekolah Jurnal Statistika dan Aplikasinya Jurnal Pendidikan Annals of Mathematical Modeling Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Wawasan: Jurnal Kediklatan Balai Diklat Keagamaan Jakarta Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian Kepada Masyarakat Patikala As-Sidanah : Jurnal Pengabdian Masyarakat Indonesian Community Journal AKADEMIK: Jurnal Mahasiswa Ekonomi & Bisnis Jurnal Natural
Selly Anastassia Amellia Kharis
Mathematics Department, Faculty Of Science And Technology, Universitas Terbuka, Indonesia
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UJI VALIDITAS DAN RELIABILITAS INSTRUMEN PENJADWALAN MATA KULIAH TUTORIAL TATAP MUKA DAN WEBINAR UNIVERSITAS TERBUKA Kharis, Selly Anastassia Amellia; Zubir, Edward; Permatasari, Sri Maulidia; Arisanty, Melisa; Qonitah, Laity; Robiansyah, Anton
Paedagoria : Jurnal Kajian, Penelitian dan Pengembangan Kependidikan Vol 15, No 4 (2024): Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/paedagoria.v15i4.26260

Abstract

Abstrak: Universitas Terbuka (UT) sebagai pioneer instansi pendidikan dengan pembelajaran jarak jauh di Indonesia. Salah satu bentuk layanan yang diberikan Universitas Terbuka kepada mahasiswa adalah layanan bantuan pembelajaran.  Salah satu bentuk layanan bantuan pembelajaran adalah tutorial berbasis tatap muka (TTM) dan tutorial berbasis webinar (tuweb). Sebelum pelaksanaan TTM dan tuweb, Universitas Terbuka menyusun penjadwalan pembelajaran berdasarkan pada standar aturan yang telah ditentukan. Dengan semakin meningkatnya jumlah mahasiswa, dibutuhkan efektivitas dalam proses penjadwalan, sehingga penelitian terkait dengan penjadwalan TTM dan tuweb perlu dilakukan. Salah satu hal yang harus dipersiapkan dalam penelitian adalah instrumen penelitian yang telah diuji validitas dan reliabilitas datanya. Penelitian ini menggunakan kuesioner sebagai instrumen pengumpulan data dan bertujuan untuk menguji validitas dan reliabilitas kuesioner penjadwalan mata kuliah TTM dan tuweb Universitas Terbuka. Penelitian ini memanfaatkan metode Pearson Correlation dalam pengujian validitas dan teknik Cronbach’s Alpha untuk menguji reliabilitas instrumen penelitian. Penelitian dilakukan kepada 36 manager dan staff yang melakukan proses penjadwalan di UT Daerah. Instrumen penelitian terdiri dari enam variabel, yaitu variabel registrasi dan pembayaran mahasiswa, kelompok belajar (pokjar) dan sentra layanan UT (Salut), tutor TTM/Tuweb, petugas UT Daerah, persetujuan prodi dan fakultas, dan variabel sistem penjadwalan. Hasil penelitian menunjukkan tiga dari enam variabel valid dan reliabel. Berdasarkan hal tersebut, 3 variabel pada instrumen penelitian dapat dipercaya dan konsisten.Abstract:  Universitas Terbuka (UT) is a distance learning university in Indonesia. One of the services provided by Universitas Terbuka to its students is learning support services. This support includes face-to-face tutorials (TTM) and webinar tutorials (tuweb). Before the implementation of TTM and tuweb, Universitas Terbuka prepares the scheduling in accordance with established standards. With the increasing number  of students, the effectiveness of the scheduling proses is necessary, so that research on TTM and tuweb scheduling needs to be carried out. One critical aspect of this reserach is the preparation of a research instrument that has undergone validity and reliability testing. This study uses questionnaire as data collection instrument and aims to test the validity and reliability of questionnaire for TTM and tuweb scheduling process in UT. This study uses Pearson Correlation to test validity and Cronbach’s Alpha  to test the reliablity of the research instruments. The research was conducted with 36 managers and staff involved in the scheduling process at UT regional Offices. The research instrument consists of six indicators: student registration and payment, study groups (pokjar) and UT service centers (Salut), TTM/Tuweb tutors, UT Regional staff, program, and faculty approval, and scheduling systems. The results indicate that three out of six indicators are valid and reliable. Based on these findings, three indicators of the research instrument are deemed trustworthy and consistent
Creative Digital Literacy in Reducing War Flaming on Social Media Arisanty, Melisa; Riady, Yasir; Amellia Kharis, Selly Anastassia; Sukatmi, Sri; Zubir, Edward; Ajmal, Muhammad
Communicatus: Jurnal Ilmu komunikasi Vol 8, No 2 (2024): Communicatus: Jurnal Ilmu Komunikasi
Publisher : Fakultas Dakwah dan Komunikasi UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/cjik.v8i2.40154

Abstract

War flaming constitutes one of the perilous practices prevalent on social media platforms. This might result in discomfort associated with social media usage, leading to melancholy, anxiety, excessive worry, and disturbances in mental health. War Flaming has become a prominent issue that necessitates enhancing digital literacy on social media platforms. This study employed a qualitative methodology, with data collected through observation, in-depth interviews, and Focus Group Discussions (FGD). Informants were selected using standard case sampling. The selected informants include the Directorate of IKP from the Ministry of Communication and Information of the Republic of Indonesia, SiBerkreasi, digital technology and culture experts, and specialists in social campaigns. The findings indicated that digital literacy building aimed at mitigating war flaming on social media involved creating innovative social campaigns through pertinent language and a human-centric literacy approach. This strategy seeks to engage Generation Z, empowering youth communities as proactive advocates against hoax narratives on social media. It emphasizes collaboration among governmental entities, community leaders, and journalists within the anti-war flaming educational initiative, alongside the optimization of TikTok and Instagram for disseminating positive content, and partnerships with young influencers to promote the significance of digital reputation. Creative digital literacy, facilitated by social campaigns and multisectoral cooperation, effectively mitigates war flaming on social media, enhances Gen Z awareness, and promotes mental health through affirmative material.
TRAINING AND ASSISTANCE IN THE DEVELOPMENT OF LEARNING OUTCOME ASSESSMENT MATERIALS HIGH-ORDER THINKING SKILLS FOR HIGH SCHOOL MATHEMATICS TEACHERS IN SOUTH TANGERANG Herlinawati, Elin; Kharis, Selly Anastassia Amellia; Idayani, Darsih; Siregar, Hasoloan; Muna, Siti Umamah Naili
As-Sidanah Vol 5 No 2 (2023): OKTOBER
Publisher : LP2M Universitas Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35316/assidanah.v5i2.382-398

Abstract

High Order Thinking Skill (HOTS) is students' ability to process knowledge and ideas in a certain way to give them new knowledge and implications. The general perception regarding HOTS questions is that they are high-level questions. Most teachers adopt olympic questions as HOTS questions due to a misperception that HOTS questions are difficult, even though HOTS questions can be made in various difficulty levels: low, medium, and high. In addition, the substantive aspect of Mathematics, especially the application of Mathematics in life, is also one of the problems in developing HOTS questions. The method of implementing community service (PkM) is by training and assisting in preparing SMA-level Mathematics HOTS questions. The results of this PkM activity are: (1) Increased knowledge and understanding of teachers in the technique of developing HOTS questions which can be seen in an increase in the average pre-test and post-test results by 9%, (2) Improved mathematical skills in the use of concepts and applied Mathematics on HOTS questions. This can be seen from the questions made by the teachers in this PkM activity, and (3) the participants' satisfaction with this PkM activity is shown by the questionnaire results with a satisfaction range of 85.71% - 96.43%.
TRAINING AND ASSISTANCE IN USING GEOGEBRA TO IMPROVE THE COMPETENCE OF HIGH SCHOOL MATHEMATICS TEACHERS Idayani, Darsih; Hidayat, Wahyu; Kharis, Selly Anastassia Amellia; Tarigan, Asmara Iriani; Sumartono, Sumartono
As-Sidanah Vol 6 No 1 (2024): APRIL
Publisher : LP2M Universitas Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35316/assidanah.v6i1.182-192

Abstract

Mathematics teachers must adapt to technological developments in the digital era. Among other problems related to learning mathematics, students tend to feel bored and uninterested in mathematics. At the same time, most teachers need help keeping up with fast technology developments. The solution offered is training and mentoring activities for using the GeoGebra software in mathematics learning in South Tangerang City in collaboration with the Subject Teacher Deliberation of Mathematics or MGMP. The material presented was about introducing GeoGebra, graphs, and function operations. Moreover, it was about solving linear programming, geometry, and calculus in GeoGebra. The pretest and posttest results showed increased participants' knowledge about GeoGebra utilization. This condition is indicated by the significance value of the t-test, which is less than 0.05 and less than 0.001. In addition, activity evaluation was carried out by filling out evaluation forms and interviews. The evaluation results show that the training and mentoring activities have enabled participants to gain new knowledge about the GeoGebra as needed in teaching mathematics in high school.
Comparing machine learning models for Indonesia stock market prediction Amellia Kharis, Selly Anastassia; Anna Zili, Arman Haqqi; Malik, Maulana; Nuryaningrum, Wahyu; Putri, Agustiani
Indonesian Journal of Electrical Engineering and Computer Science Vol 38, No 1: April 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v38.i1.pp508-516

Abstract

The financial market hold a significant role in the economy and the ability to accurately predict stock prices poses a major challenge, particularly in volatile markets like Indonesia. This study investigates the application of three supervised machine learning algorithms: random forest (RF), support vector regression (SVR), K-nearest neighbor (KNN) to predict the closing prices of stocks. The data used in this research consists of BBCA, PWON, and TOWR stocks. This study adopted daily historical stock prices from March 2017 to February 2020, which were normalized and segmented into training and testing datasets. The models were trained using machine learning techniques, and their predictive accuracy was evaluated using root mean square error (RMSE) and mean absolute error (MAE). The historical stock data includes Open, High, Low, and Close prices. The result indicated that SVR consistently outperforms RF and KNN in terms of RMSE and MAE across different stocks. The SVR method produced RMSE values of 4.79% for BBCA stock, 10.61% for PWON stock, and 15.14% for TOWR stock, and produces MAE values of 3.52% for BBCA stock, 8.49% for PWON stock, and 13.78% for TOWR stock.
Model Matematika SVEIAR Penularan Covid-19 di Indonesia dengan Intervensi Vaksinasi dan Tradisi Mudik Idayani, Darsih; Tarigan, Asmara Iriani; Kharis, Selly Anastassia Amellia; Kurniawati, Heny
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Volume 13 Issue 1 April 2025
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/euler.v13i1.30231

Abstract

In early 2020, the Covid-19 epidemic started in China, rapidly spreading across the globe, including Indonesia. Indonesian society is known for its diversity and complexity, making it difficult to predict trends in the number of infected, deceased, and recovered individuals. This study develops a Covid-19 transmission epidemic model, called SV EIAR, which accounts for interventions such as vaccination and the mudik tradition (the practice of returning to hometowns during Eid). In this model, the susceptible (S) compartment refers to the subpopulation of individuals who are susceptible to the virus, while vaccinated (V) represents those who have been vaccinated twice. The exposed (E) compartment includes individuals who are infected but still in the incubation period and unable to spread the virus. Infection (I) refers to individuals who are symptomatic, and asymptomatic (A) includes those who are infected but show no symptoms. Lastly, the recover (R) compartment represents individuals who have recovered from the infection. The analysis of the model involves identifying the reproduction number, estimating the disease-free and endemic equilibrium points, and analyzing their stability. Numerical simulations were carried out using Covid-19 transmission data from Indonesia to predict the trends of the infected and asymptomatic populations. The results suggest that the dynamics of Covid-19 cases are semi-stable in the susceptible (S), exposed (E), infected (I), and asymptomatic (A) compartments, meaning that these populations will increase over time. In a disease-free situation, the susceptible population (S) remains stable at a certain value, while other populations are stable at nearly zero. The susceptible population in the disease-free state is larger than during an epidemic, while other populations are smaller in the disease-free state compared to the epidemic. Additionally, the study found that vaccination can help reduce the transmission of Covid-19, while the practice of mudik can increase the spread of the virus.
EXPLORATION OF THE DIGITAL LITERACY LEVEL OF NEW STUDENTS IN OPEN AND DISTANCE LEARNING Kharis, Selly Anastassia Amellia; Arisanty, Melisa; Permatasari, Sri Maulidia; Robiansyah, Anton; Sukatmi, Sri
Paedagoria : Jurnal Kajian, Penelitian dan Pengembangan Kependidikan Vol 16, No 2 (2025): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/paedagoria.v16i2.29725

Abstract

Abstrak: Pembelajaran terbuka dan jarak jauh (PTJJ) semakin diminati oleh masyarakat Indonesia, sebagaimana ditunjukkan dari peningkatan jumlah mahasiswa pada perguruan tinggi terbuka dan jarak jauh dari tahun ke tahun. Salah satu aspek dalam PTJJ adalah penggunaan teknologi yang disebabkan tidak adanya batas ruang dan waktu dalam pembelajarannya. Mahasiswa baru yang memiliki perbedaan cara belajar dari tatap muka menjadi pembelajaran jarak jauh (online learning) memerlukan adaptasi dalam proses belajarnya. Apalagi PTJJ tidak membatasi usia pada mahasiswanya sehingga memerlukan analisis kebutuhan pelatihan dan program pembelajaran. Penelitian ini bertujuan untuk mengeksplorasi tingkat literasi digital mahasiswa baru dalam PTJJ. Berdasarkan penelitian terhadap 10.396 mahasiswa baru menunjukkan bahwa kemampuan literasi digital beragam. Skor literasi digital pada digital skill sebesar 68,22 yang termasuk klasifikasi tinggi. Skor literasi digital pada digital ethics sebesar 95,25 yang termasuk klasifikasi sangat tinggi. Skor literasi digital untuk digital safety sebesar 57,46 yang berada pada klasifikasi cukup. Skor untuk digital culture adalah 84,94 yang berada dalam klasifikasi sangat tinggi. Hasil ini menunjukkan bahwa digital skill, digital culture dan digital ethics mahasiswa baru sudah baik namun perlu adanya peningkatan pada digital safety. Oleh karena itu, diperlukan penguatan literasi digital yang berfokus pada peningkatan kesadaran akan keamanan digital guna mendukung efektivitas PTJJ.Abstract:  Open and Distance Learning (ODL) has gained increasing popularity in Indonesia, as evidenced by the growing number of students enrolling in open and distance universities each year. Technology integration is a key aspect of ODL, enabling learning without spatial and temporal limitations. New students transitioning from face-to-face learning to distance learning (online learning) require adaptation in their learning process. ODL does not impose age restrictions on its students, necessitating an analysis of training needs and learning programs to support their academic success. This study aims to explore the level of digital literacy among new students in ODL. Based on an analysis of 10,396 new students, the findings indicate diverse levels of digital literacy. The digital skill score was 68.22, classified as high. The digital ethics score reached 95.25, categorized as very high. Meanwhile, digital safety obtained a score 57.46, categorized as moderate, and digital culture achieved a score of 84.94, classified as very high. These results suggest that while new students demonstrate strong digital skills, digital culture, and digital ethics, there remains a need for improvement in digital safery. Therefore, strengthening digital literacy with a focus on increasing awareness of digital safety is essential to enhance the effectiveness of ODL.
Membangun Generasi Bijak, Cerdas, Santun pada Era Digitalisasi melalui Edukasi Etika Digital bagi Remaja Sekolah Menengah Pertama Melisa Arisanty; Yasir Riady; Selly Anastassia Amellia Kharis; Anton Robiansyah; Sri Sukatmi
PaKMas: Jurnal Pengabdian Kepada Masyarakat Vol 4 No 2 (2024): November 2024
Publisher : Yayasan Pendidikan Penelitian Pengabdian Algero

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54259/pakmas.v4i2.3372

Abstract

The issue of digital ethics is a major problem that needs to be resolved. The challenge of implementing digital ethics amidst increasingly rapid technological developments is the main focus in various digital education and literacy activities. Digital Education and Literacy are the main keys to handling problems related to digital ethics, such as the spread of hoaxes, cyberbullying, Hatescpeech and Hatecomment, war flaming, fraud, SARA violations, distribution of content containing violence and pornography and so on. Therefore, community service activities regarding digital ethics education for junior high school teenagers at SMP PGRI 1 Ciputat can have the opportunity to increase teenagers' awareness of implementing digital ethics when utilizing various digital media platforms. The focus of this community service activity is teenagers, especially junior high school (SMP) teenagers, because it is considered the initial phase in the formation of identity and self. The formation of behavior as an adult also depends on what kind of moral education was given as a teenager. Based on the evaluation, this educational activity about digital ethics is very useful and able to increase awareness among teenagers, especially at SMP PGRI 1 Ciputat, about the importance of applying digital ethics in their daily activities when accessing digital media.
CERDAS DAN AMAN BERMEDIA DIGITAL : PENINGKATAN KESADARAN KEAMANAN SIBER DI ERA HOAKS DAN PHISHING Arisanty, Melisa; Riady, Yasir; Anastassia Amellia Kharis, Selly; Maulidia Permatasari, Sri; Sukatmi, Sri
Jurnal Pengabdian Kepada Masyarakat Patikala Vol. 4 No. 4 (2025): Jurnal PkM PATIKALA
Publisher : Education and Talent Development Center of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/patikala.v4i4.3282

Abstract

Digital safety has emerged as a critical issue that demands serious attention, particularly among younger generations. Amidst the rapid advancement of technology, adolescents' ability to safeguard their personal digital security and avoid risks such as hoaxes, phishing, cyberbullying, the spread of harmful content, and various forms of online fraud has become increasingly essential. Digital safety education plays a vital role in equipping them with the knowledge and skills necessary to confront these challenges intelligently and critically. A community engagement program conducted at SMP PGRI 1 Ciputat focused on delivering digital safety training to junior high school students, an age group situated in a crucial phase of identity and digital character formation. Evaluation results from this program revealed that 100% of participants comprehended the material presented and felt motivated to implement it in their daily digital practices. Participants demonstrated positive behavioral changes, including increased caution in sharing personal information, enhanced accuracy in verifying online content, and improved awareness in identifying and avoiding suspicious links or content. These changes also reflected greater vigilance in their overall use of digital platforms. These findings suggest that well-targeted digital safety training can serve as a strategic initiative to cultivate a generation of digitally responsible, resilient, and secure adolescents
Implementation of ABC and ROP Methods for Inventory Control of Mandatory Pharmacy Drugs Maulani, Nur Izani; Kharis, Selly Anastassia Amellia
G-Tech: Jurnal Teknologi Terapan Vol 9 No 2 (2025): G-Tech, Vol. 9 No. 2 April 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i2.6613

Abstract

Grawira Farma Pharmacy in Kulon Progo manages Mandatory Pharmacy Drugs, which require strict regulation for self-medication. Managing the inventory of Mandatory Pharmacy Drugs is necessary to prevent shortages and stockouts. This study aims to analyze the planning and control of Mandatory Pharmacy Drugs inventory at Grawira Farma Pharmacy, using the Always Better Control (ABC) method for inventory planning, categorizing drugs into three groups. Group A consists of fast-moving drugs with 11 types (27.5%), accounting for 79.38% of total drug usage and an investment value of Rp 1,697,300.00, group B consists of moderately-selling drugs with 11 types (27.5%),  contributing 18.29% of total drug usage and an investment value of Rp 1,319,450.00, and group C consist of the slowest-selling drugs with 18 types (45%), representing 2.33% of total drug usage and an investment value of Rp 392,425.00. In addition to inventory planning, this study examines inventory control using the Reorder Point (ROP) method to determine when the reorder after grouping Mandatory Pharmacy Drugs. The research results obtained the reorder point of Mandatory Pharmacy Drugs, which include group A, ranging from 150-500 items, group B varies from 14-340 items, group C, ranging from 0-34 items.
Co-Authors AA Sudharmawan, AA Abdulmana, Sahidan Agustiani Putri Ajmal, Muhammad Anna Zili, Arman Haqqi Anuraga Jayanegara ARMAN HAQQI ANNA ZILI Arman Haqqi Anna Zili Arman Haqqi Anna Zili Asmara Iriani Tarigan Bramastary, Aurelly Meidy Bustamam, Alhadi Danial, T Ahmad Darsih Idayani Darwin Hartono Derick Hendri Devvi Sarwinda Dian Lestari Dwi Antari Wijayanti Edward Zubir Edward Zubir Eka Wirajuang Daurrohmah Elin Herlinawati Endang Wahyuningrum Endy Grade Tampubolon Fajar, Fauzan Ihza Fatia Fatimah Fauzan Ihza Fajar Febri Maulana Hasoloan Siregar Heny Kurniawati Herlinawati, Elin Hertono, Gatot Fatwanto Hirawati Lubis Indriyani, Annisa Irawan, Sam Rizky Kusriyah, Siti Martinasari, Made Diyah Putri Maulana Malik, Maulana Maulani, Nur Izani Maulidia Permatasari, Sri Melisa Arisanty Melisa Arisanty Muna, Siti Umamah Naili NadyaAsanul Husna Nur Mahin Nuryaningrum, Wahyu Nyoman A. Wibawa Pesi Suryani Putri, Agustiani Qonitah, Laity Riady, Yasir Robiansyah, Anton Robiansyah, Anton Saputra, Dimas Septian Siregar, Hasoloan Sri Maulidia Permatasari Sri Maulidia Permatasari Sukatmi, Sri Sumartono Sumartono Sumartono Tarigan, Asmara Iriani Tri Murdiyanto Tri Wijayanti Septiarini Wahyu Hidayat Wiradharma, Gunawan Yasir Riady Yumiati Zubir, Edwar Zubir, Edward