Article Per Year (5 Year)
p-Index From 2021 - 2026
1.8
P-Index
This Author published in this journals
All Journal Jurnal Konseling dan Pendidikan TELKOMNIKA (Telecommunication Computing Electronics and Control) Journal of Information Systems Engineering and Business Intelligence Proceeding of the Electrical Engineering Computer Science and Informatics ITEj (Information Technology Engineering Journals) JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI JTP - Jurnal Teknologi Pendidikan Aptisi Transactions on Technopreneurship (ATT) Jurnal Mantik Journal of Applied Engineering and Technological Science (JAETS) International Journal of Engineering, Science and Information Technology Abditeknika - Jurnal Pengabdian Kepada Masyarakat Innovative: Journal Of Social Science Research
Retnowardhani, Astari
Unknown Affiliation
Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

Published : 15 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 15 Documents
Search

 1   2 
Enhance interval width of crime forecasting with ARIMA model-fuzzy alpha cut Yaya Sudarya Triana; Astari Retnowardhani
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 3: June 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i3.12233

Abstract

With qualified data or information a better decision can be made. The interval width of forecasting is one of data values to assist in the selection decision making process in regards to crime prevention. However, in time series forecasting, especially the use of ARIMA model, the amount of historical data available can affect forecasting result including interval width forecasting value. This study proposes a combination technique, in order to get get a better interval width crime forecasting value. The propose combination technique between ARIMA model and Fuzzy Alpha Cut are presented. The use of variation alpha values are used, they are 0.3, 0.5, and 0.7. The experimental results have shown the use of ARIMA-FAC with alpha=0.5 is appropriate. The overall results obtained have shown the interval width crime forecasting with ARIMA-FAC is better than interval width crime forecasting with 95% CI ARIMA model.
Usability of BLESS-implemented class room: a case study of mixtio Desita Mustikaningrum; Astari Retnowardhani
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 2: April 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i2.8999

Abstract

Conventional learning system and e-learning have their own strengths and weaknesses. To combine both systems, blended learning is created. In Extention Program of Informatics Engineering Faculty at XYZ university most of the students already have jobs. As much 47.5 % of students who take this program have a job in daily office hours. Then, to facilitate the learning process the XYZ university develop learning management system (LMS) by Moodle. XYZ university want to make a learning process with blended learning concept. However, the Moodle sytem has limited function to adapt the blended learning system (BLS). In the aim to improve the class usability in BLS, then this study proposes to apply to Blended Learning System Structure (BLESS) into LMS design. BLESS is offered as a framework which matches to learning and uses a top-down approach. Then, the system design maed it “Mixtio”. At the end of this study, it can be seen the analysis result of the use of BLESS can improve system usability of LMS.
Security risk analysis of bring your own device system in manufacturing company at Tangerang Astari Retnowardhani; Raziv Herman Diputra; Yaya Sudarya Triana
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 2: April 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i2.10165

Abstract

Nowadays information system has become popular used for help effectiveness and efficiency operation on a company. Bring Your Own Device (BYOD) system is a growing trend in corporate environment, where employees could access the system from anywhere. BYOD system is system information development using some technology like a Virtual Private Networks (VPN) or using some application to make the client on outside network office can access to inside networks with remote system. The remote system has strength to help employees working anywhere and anytime, that could make some issue for a security thing. The security issue that can be happen is unauthorized access and lost some important of company information. XYZ company as a manufacturing company in Tangerang, Indonesia has been used BYOD system in their company. They want to improve the security of the system with do risk analysis, with the aim to protect the internal data. The risk analysis use Cybersecurity Framework NIST will assist organizations to understand the risk of BYOD system. The analysist results obtained by the use of cybersecurity analysis on BYOD system in XYZ company are found some improvement need to develop in terms of security system recommended. According to the stages of respond with the analysis using Cybersecurity NIST framework and ISO/IEC 27002:2013.
Evaluation of Knowledge Management System Using Technology Acceptance Model Jarot S. Suroso; Astari Retnowardhani
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 4: EECSI 2017
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (268.266 KB) | DOI: 10.11591/eecsi.v4.1048

Abstract

This study was motivated to assess the Knowledge Management System (KMS) using Technology Acceptance Model (TAM). TAM is the best concept to be taken as model on explaining user attitude of new technology. TAM model used in the study because it has been widely adopted among IT researchers and appears to be growing rapidly, has the reliability and construct  validity were established, and realized  that the model has not been applied to the acceptance KMS. The data population in this study is the employees in PT. XYZ who have work-related to development and maintenance process. The data analysis  was  done  using  Partial  Least  Squares  (PLS).  The analysis was proof to be statistically significant: a) perceived ease of use and perceived usefulness, b) perceived ease of use and attitude, c) perceived usefulness and attitude, d) perceived usefulness and behavioral intention to use, e) behavioral intention to use and actual use.
Measuring Student Satisfaction In Using Learning Management System At ED-TECH Company Sandy Anugerah; Astari Retnowardhani
Jurnal Mantik Vol. 6 No. 1 (2022): May: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/jurnalmantik.v6i1.2187

Abstract

Nowadays, technology and education have a strong relationship. Especially in this pandemic situation which forced people to work and study from home. The education world does not only talk about formal education such as school or college. Many students or employees searching for informal education to develop their skills. Education technology companies offer educational services that are combined with technology to enable the online teaching and learning process. This process supports the current condition which we need to keep learning in the middle of social distancing. This case study aims to evaluate student satisfaction with the learning management system while studying at an education technology company. This research uses IS Success Model to find is there any direct influence from technical system quality, service quality, educational system quality perceived usefulness, and information quality to the user satisfaction toward learning management system. This research took a sample of 70 students at one of the ed-tech companies in Indonesia who already used the learning management system in this company for at least 1 month for their study. The result showed that perceived usefulness and technical system quality are significantly affected user satisfaction.
Perbandingan Kerangka Kerja Penilaian Tingkat Kematangan Pengujian Perangkat Lunak Saragih, Margreth Handayani; Retnowardhani, Astari
JATISI Vol 11 No 2 (2024): JATISI (Jurnal Teknik Informatika dan Sistem Informasi)
Publisher : Universitas Multi Data Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/jatisi.v11i2.7897

Abstract

Software testing is one of the crucial stages in the development of software within an organization or company. Some organizations even measure the maturity level of their software testing practices assessing whether their testing efforts suffice or require improvements in the future. This paper presents the findings of a qualitative research study comparing selected software maturity assessment frameworks. The evaluation in this research compares the TMMI, TPI Next, and Test SPICE frameworks. The paper provides a comparison of these frameworks and recommends the most suitable one based on organizational needs. These frameworks can be considered for use in improving the software testing process, with careful consideration in choosing among them. Additionally, a summary of example implementations of the chosen framework is also provided. The results of this study are expected to serve as a valuable reference for organizations in preparing for software testing maturity assessments.
Tingkat Kepuasan Pengguna E-Learning Mahasiswa Pascasarjana Universitas Swasta Terbaik di Jakarta R, Ayub Ezra; Retnowardhani, Astari
ITEJ (Information Technology Engineering Journals) Vol 7 No 1 (2022): June
Publisher : Pusat Teknologi Informasi dan Pangkalan Data IAIN Syekh Nurjati Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24235/itej.v7i1.97

Abstract

Innovation learning that is relatively cheaper, easily accessible, or an integrated system as an e-learning platform in blended or hybrid. The purpose of this study was to analyze the effect of using e-learning on the satisfaction level of postgraduate students at a private university in Jakarta during the COVID-19 pandemic. Sample data obtained from postgraduate students; the number is 324 postgraduate students through online questionnaires on a google form. To conduct research testing through PLS-SEM analysis with the help of the SmartPls application version 3.0. The results of this study indicate that for H1 the original sample value is 0.158, the p-value is below 0.05, and the t-statistic is 2.791, which is greater than the t-table value of 1.962. For the results of H2, the original sample value is 0.132 and the p-value is above 0.05, and the t-statistic is 1.583 which is smaller than the t-table value of 1.962. For the H3 results, the original sample value is 0.201, the p-value is below 0.05, and the t-statistic is 2.221 which is greater than the t-table value of 1.962. So that, the overall result of this research is that the quality of the system, and the quality of information that affect the level of user satisfaction.
Unlocking User Satisfaction: A Delone & Mclean Is Success Model Approach To It Helpdesk Ticketing System Adoption Niky Purnama Putra; Astari Retnowardhani
Journal of Applied Engineering and Technological Science (JAETS) Vol. 6 No. 1 (2024): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v6i1.4469

Abstract

The IT Helpdesk Ticketing System application is used to submit requests for IT services and handle technical problems related to these services. This research aims to understand the factors that influence user satisfaction with this application, which is triggered by user dissatisfaction. The research method used is qualitative using the DeLone & McLean IS Success Model, which is implemented through the Partial Least Squares Structural Equation Modeling (SEM) framework. The research was conducted on 231 respondents who were surveyed online. The results showed that system quality, service quality, and level of system usage significantly affect user satisfaction. System and service quality contribute positively to user satisfaction, while the level of system usage also has a key role in determining the level of satisfaction. The implications of the findings emphasize the importance of paying attention to these aspects in system development and improvement, while increasing the level of usage to meet the needs and increase user satisfaction more effectively.
Comparison of LSTM and TCN Models for Customer Churn Prediction Based on Sentiment and Transaction Data Dharmasaguna, Made Bayu Brahmanda; Retnowardhani, Astari
International Journal of Engineering, Science and Information Technology Vol 5, No 4 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i4.979

Abstract

This study investigates the combined use of customer review sentiment analysis and transaction history to predict customer churn on the Balimall Market e-commerce platform. The dataset includes 41,519 reviews labeled with positive and negative sentiments and 48 transaction samples labeled as churn or non-churn based on RFM method. Two deep learning models, Long Short-Term Memory (LSTM) and Temporal Convolutional Network (TCN), are applied in parallel for each analysis path. Data pre-processing includes filtering, cleaning, tokenizing, normalization, sentiment labeling, as well as feature engineering and churn labeling. Evaluation using accuracy, precision, recall, F1-score, and confusion matrix metrics shows that TCN excels with 91.55% accuracy on sentiment analysis and 91.67% on churn prediction, while LSTM achieves 86.35% and 86.67% respectively. Segment analysis shows that 47.30 % of users express negative sentiment yet remain active, 51.69 % express positive sentiment and remain active , 0.54 % express negative sentiment and churn, and 0.48 % express positive sentiment and churn. This finding demonstrates that negative sentiment alone does not necessarily lead to churn; instead, the greatest churn risk arises in negative sentiment churners and positive sentiment churners. Expert validation confirmed the reliability of both models, with the recommendation of using a hybrid to combine the advantages of each architecture. The results of this study are expected to help Baliyoni Group design a more targeted customer retention strategy and improve customer satisfaction by examining these segment conditions.
Gamified Massive Open Online Course to Enhance Learner Engagement and Learning Outcomes Pratama, Rikky Ihza; Retnowardhani, Astari
JTP - Jurnal Teknologi Pendidikan Vol. 27 No. 2 (2025): Jurnal Teknologi Pendidikan
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jtp.v27i2.56193

Abstract

The use of Ruangguru app significantly increases learner engagement in the learning process. Ruangguru app uses gamification method in its learning design. In this app, there are features such as point system, rewards, and levels that are designed to increase learner motivation and engagement in the learning process. In addition, there are also game elements such as challenges, missions, and leaderboards designed to make the learning process more interesting and interactive. These features provide a more enjoyable learning experience for participants and encourage them to be more active in learning. Many MOOCs (Massive Open Online Course) use gamification methods in their learning design. A unique feature of Ruangguru app is the use of animated characters as learning guides. These animated characters are designed with local characteristics, so that participants can more easily identify and feel familiar with the characters. The method used in this research is quantitative method using data processing with SEM PLS software. The results showed that there was an influence of MOOC Gamification on participant engagement and there was also an influence between MOOC Gamification on participant learning outcomes.
Co-Authors Andayani, Fitria Ayubi, M. Nizar Desita Mustikaningrum Dharmasaguna, Made Bayu Brahmanda Diyurman Gea Jarot S. Suroso Niky Purnama Putra Pramadya, Rifky Pratama, Rikky Ihza Puspita, Virienia Putratama, Donny R, Ayub Ezra Raziv Herman Diputra Sandy Anugerah Saragih, Margreth Handayani Vernon, Juan Vint Yaya Sudarya Triana