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All Journal Jurnal Pengabdian Masyarakat Nusantara International Journal of Management Science and Information Technology (IJMSIT) Jurnal Suara Pengabdian 45 Sejahtera: Jurnal Inspirasi Mengabdi Untuk Negeri Journal of Innovative and Creativity Serat Acitya
Widowati, Fika Ulfa
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Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Application of C4.5 algorithm with PSO Feature Selection and Bagging Technique on Breast Cancer Classification Widowati, Fika Ulfa
International Journal of Management Science and Information Technology Vol. 4 No. 2 (2024): July - December 2024
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/ijmsit.v4i2.3061

Abstract

The second greatest cause of death for women worldwide is breast cancer. When abnormal cells in the body proliferate out of control, cancer is the result. The diagnosis of breast cancer was established using anthropometric data obtained from standard blood tests. From the UCI Machine Learning Repository, the Breast Cancer Coimbra Data Set was obtained and put to use. One popular classification decision tree method is the C4.5 approach. By selecting the appropriate features and applying the appropriate strategy to address class imbalance throughout the classification process, the performance of the C4.5 algorithm may be enhanced. To determine the accuracy of the classification, tests are conducted using a confusion matrix. Accuracy in this study is anticipated to increase with the application of the C4.5 Algorithm, the Bagging approach to address class imbalance, and the PSO feature selection method. The C4.5 Algorithm, PSO, Bagging Technique produce the best accuracy results, with an average of 86.36 percent. The C4.5 classification method has the second highest accuracy, with a PSO accuracy of 79.39 percent. Utilizing the Bagging Technique in conjunction with the C4.5 Algorithm, the accuracy of 75.0% is the third highest. Furthermore, it has a 65.71 percent accuracy with the C4.5 categorization. As a result, the increase in accuracy from before adding PSO and Bagging Technique was 20.65%, indicating that the inclusion of PSO and Bagging Technique had a substantial impact on the calculation process.
Peningkatan Kapabilitas Kinerja untuk Meningkatkan Mutu dan Pelayanan di Auraderma Puji Setya Sunarka; Deewar Mahesa; Sukardi Sukardi; Fika Ulfa Widiwati
Sejahtera: Jurnal Inspirasi Mengabdi Untuk Negeri Vol. 3 No. 3 (2024): Sejahtera: Jurnal Inspirasi Mengabdi Untuk Negeri
Publisher : Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/sejahtera.v3i3.2384

Abstract

The service program carried out at the Auradherma company which operates in the field of beauty clinic services, the aim to be achieved in this service activity is to provide motivation and direction related to improving employee performance, this activity was attended by all Auradherma employees totaling 50 participants from various work departments which is in Auradherma. Organizational performance is highly dependent on the quality of human resources, and employee performance is influenced by understanding Standard Operating Procedures (SOP) and accurate performance assessments. It is hoped that this service program can have a significant impact on improving employee performance by prioritizing quality and service amidst competition in the beauty business which is currently developing in several regions and is one of the components of society's current needs.
Pelatihan Kewirausahaan untuk Optimalisasi Penurunan Prevalensi Stunting Generasi Milenial Janti Soegiastuti; Atika Mutiarachim; Nur Atika Yuniarti; Fika Ulfa Widowati
Jurnal Suara Pengabdian 45 Vol. 3 No. 3 (2024): September : Jurnal Suara Pengabdian 45
Publisher : LPPM Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/pengabdian45.v3i3.2023

Abstract

Pelatihan Kewirausahaan untuk Optimalisasi Penurunan Prevalensi Stunting Generasi Milenial merupakan program pengabdian kepada masyarakat yang bertujuan untuk menurunkan prevalensi stunting pada remaja melalui edukasi pola hidup sehat dan pelatihan kewirausahaan. Program dilaksanakan di Kelurahan Wonopumblon, Kecamatan Mijen, Kota Semarang pada bulan Maret sampai November 2023, terdiri dari proses persiapan, program inti berupa penyuluhan mengenai stunting dan pelatihan kewirausahaan yang dilaksanakan pada 16 Mei 2023 kemudian dilanjutkan dengan pembinaan kewirausahaan untuk memastikan remaja sukses dalam melakukan usaha, mendapatkan penghasilan untuk meningkatkan taraf hidup terutama memperbaiki pola makan gizi seimbang. Penyuluhan melibatkan narasumber dari tenaga kesehatan yaitu bidan, dokter dan akademisi ekonomi untuk menyampaikan pelatihan kewirausahaan. Pendekatan edukatif dan partisipatif terbukti efektif meningkatkan kesadaran remaja untuk mengoptimalkan pola hidup sehat guna menurunkan prevalensi stunting.
Cybersecurity Mesh and Edge Computing on the Analytics Platform of the Indonesian Telecommunications Industry Widowati, Fika Ulfa
International Journal of Management Science and Information Technology Vol. 5 No. 1 (2025): January - June 2025
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/ijmsit.v5i1.3845

Abstract

This research analyzes the implementation of cybersecurity mesh and edge computing on analytics platforms in the Indonesian telecommunications industry. The geographical complexity and disparity of Indonesia's telecommunications infrastructure create unique challenges in securing and optimizing analytics platforms using a mixed-method approach with a sequential explanatory design. The research involves 15 national telecommunications operators representing 85% of the market share. Data were collected through structured surveys, in-depth interviews, and field observations during the period from January to June 2024. The research results show that the integration of cybersecurity mesh with edge computing increases operational efficiency by 45% and reduces latency by up to 75% compared to conventional architecture. The developed integration model successfully accommodates Indonesia's geographical characteristics and complies with national regulations. The implementation of a cybersecurity mesh increased the effectiveness of cyber threat detection by 89%, while edge computing optimization resulted in bandwidth savings of up to 60%. This research contributes to the development of a national blueprint for optimizing telecommunications analytics platforms that are adaptive to Indonesia's conditions. These findings provide practical implications for telecommunications operators in optimizing digital infrastructure. This can enrich the literature by considering integration models from geographical and regulatory aspects.
Application of C4.5 algorithm with PSO Feature Selection and Bagging Technique on Breast Cancer Classification Widowati, Fika Ulfa
International Journal of Management Science and Information Technology Vol. 4 No. 2 (2024): July - December 2024
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/ijmsit.v4i2.3061

Abstract

The second greatest cause of death for women worldwide is breast cancer. When abnormal cells in the body proliferate out of control, cancer is the result. The diagnosis of breast cancer was established using anthropometric data obtained from standard blood tests. From the UCI Machine Learning Repository, the Breast Cancer Coimbra Data Set was obtained and put to use. One popular classification decision tree method is the C4.5 approach. By selecting the appropriate features and applying the appropriate strategy to address class imbalance throughout the classification process, the performance of the C4.5 algorithm may be enhanced. To determine the accuracy of the classification, tests are conducted using a confusion matrix. Accuracy in this study is anticipated to increase with the application of the C4.5 Algorithm, the Bagging approach to address class imbalance, and the PSO feature selection method. The C4.5 Algorithm, PSO, Bagging Technique produce the best accuracy results, with an average of 86.36 percent. The C4.5 classification method has the second highest accuracy, with a PSO accuracy of 79.39 percent. Utilizing the Bagging Technique in conjunction with the C4.5 Algorithm, the accuracy of 75.0% is the third highest. Furthermore, it has a 65.71 percent accuracy with the C4.5 categorization. As a result, the increase in accuracy from before adding PSO and Bagging Technique was 20.65%, indicating that the inclusion of PSO and Bagging Technique had a substantial impact on the calculation process.
Penguatan Daya Saing UMKM Agroindustri Singkong Melalui Implementasi Inovasi Kemasan Ramah Lingkungan dan Pemberdayaan Masyarakat Widowati, Fika Ulfa
Jurnal Pengabdian Masyarakat Nusantara (JPMN) Vol. 5 No. 2 (2025): Agustus 2025 - Januari 2026
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jpmn.v5i2.5370

Abstract

Micro, Small, and Medium Enterprises (MSMEs) in the cassava agro-industry have strategic potential to support the rural economy, but face challenges in product competitiveness and environmental sustainability. This research aims to enhance the competitiveness of cassava agro-industry MSMEs thru eco-friendly packaging innovation and community empowerment. The method uses a participatory approach with the stages of socialization, training, mentoring, and evaluation. The program was implemented in Kaliwungu District, Kendal Regency, over a period of 6 months, involving 25 MSMEs. The results show an average increase in turnover of 35% and a substantial improvement in packaging quality. Environmental impacts include an 80% reduction in plastic thru cassava flour and recycled paper packaging, and a 65% decrease in packaging waste. Measurable social impacts include: increasing the capacity of 120 family members in digital business (85% able to operate e-commerce), forming 5 joint business groups, creating 15 new jobs, and improving financial literacy (78% able to prepare simple financial statements). The program creates a multiplier effect by increasing the adoption of digital technology from 20% to 85%. Evaluation shows sustainability thru a system of local partnerships and an integrated distribution network. This research contributes to the development of a green innovation-based MSME empowerment model that can be replicated in other agro-industrial regions, supporting the achievement of SDGs goals 8, 12, and 17.
Deep Learning for HIV Screening Using Laboratory and Demographic Data Widowati, Fika Ulfa
International Journal of Management Science and Information Technology Vol. 5 No. 2 (2025): July - December 2025
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/ijmsit.v5i2.5371

Abstract

In this work, laboratory and demographic data were integrated to create a deep learning model for HIV screening. The rising incidence of HIV in Indonesia necessitates the development of more effective and precise screening techniques for early identification. The created methodology improves the accuracy of HIV status prediction by integrating many laboratory indicators, including total blood count, viral load, CD4 count, and patient demographic information. For the years 2020–2024, 5,847 patient samples from different Indonesian hospitals made up the dataset. A Deep Neural Network (DNN) architecture with Grid Search hyperparameter optimization was employed in this investigation. According to the evaluation results, the model obtained an F1 score of 93.5%, a sensitivity of 92.8%, a specificity of 95.1%, and an accuracy of 94.2%. When compared to using only laboratory data, the model's performance increased by 3.7% when demographic data was included. This methodology can lessen laboratory burden while assisting medical staff in doing HIV screening more quickly and accurately. An external validation plan has been created with a testing strategy using a separate dataset from ten referral hospitals that were not part of the model training process in order to guarantee the model's dependability in clinical application. To boost the confidence of medical staff, a workable implementation has been created in the form of an API and web application that can be included into the hospital's current information systems and provide an explanation of the prediction results. To help healthcare facilities with different resource levels embrace this technology, technical and clinical implementation recommendations are offered. In order to assess how well the model works to increase HIV detection rates and clinical workflow efficiency, a post-implementation impact evaluation is planned. The efficiency of HIV prevention and control initiatives in Indonesia might be greatly increased by incorporating this paradigm into the healthcare system.
Pelatihan Kewirausahaan untuk Optimalisasi Penurunan Prevalensi Stunting Generasi Milenial Janti Soegiastuti; Atika Mutiarachim; Nur Atika Yuniarti; Fika Ulfa Widowati
Jurnal Suara Pengabdian 45 Vol. 3 No. 3 (2024): September : Jurnal Suara Pengabdian 45
Publisher : LPPM Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/pengabdian45.v3i3.2023

Abstract

Pelatihan Kewirausahaan untuk Optimalisasi Penurunan Prevalensi Stunting Generasi Milenial merupakan program pengabdian kepada masyarakat yang bertujuan untuk menurunkan prevalensi stunting pada remaja melalui edukasi pola hidup sehat dan pelatihan kewirausahaan. Program dilaksanakan di Kelurahan Wonopumblon, Kecamatan Mijen, Kota Semarang pada bulan Maret sampai November 2023, terdiri dari proses persiapan, program inti berupa penyuluhan mengenai stunting dan pelatihan kewirausahaan yang dilaksanakan pada 16 Mei 2023 kemudian dilanjutkan dengan pembinaan kewirausahaan untuk memastikan remaja sukses dalam melakukan usaha, mendapatkan penghasilan untuk meningkatkan taraf hidup terutama memperbaiki pola makan gizi seimbang. Penyuluhan melibatkan narasumber dari tenaga kesehatan yaitu bidan, dokter dan akademisi ekonomi untuk menyampaikan pelatihan kewirausahaan. Pendekatan edukatif dan partisipatif terbukti efektif meningkatkan kesadaran remaja untuk mengoptimalkan pola hidup sehat guna menurunkan prevalensi stunting.
Employee Engagement Culture and Positive Work Behavior as Drivers of Organizational Success: A Systematic Literature Review Nur Atika Yuniarti; Puji Setya Sunarka; Ryan Arya P; Atika Mutiarachim; Fika Ulfa W
Journal of Innovative and Creativity Vol. 6 No. 1 (2026)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v6i1.7729

Abstract

The study purpose of the research is to analyze the role of employee engagement culture in fostering positive work behavior and increasing organizational success. Employee engagement has become a human resource phenomenon in organizations in a dynamic business environment in the era of digital transformation. Employee involvement is not only an individual psychological state, but a very strong attachment to organizational culture and forms positive work behavior so that it can increase organizational success. However, previous studies still found several gaps, namely employee engagement and positive work behavior separately without providing an integrative understanding of how an engagement-oriented culture translates into sustainable organizational results. Materials and methods. Used a Systematic Literature Review (SLR) with the PRISMA framework, 38 peer-reviewed articles indexed in Scopus and accredited by Sinta, published between 2022 and 2025. Results. Employee engagement culture is strategic organizational resource, positive work behavior was a mediating role to increase organizational success, and organizational success must applied human resource performance, innovation, sustainability, and employee well-being. Conclusions. This study contributes to develop conceptual framework of engagement culture, positive work behavior, and organizational success. This research provides practice literacy for managers and policymakers to design inclusive, trust-based, and adaptive engagement strategies. Future research is proposed for empirical testing across sectors and cultural contexts.
Implementation of Data Security Framework in Microservices Cloud Computing Architecture for E-Learning Platform Ulfa Widowati, Fika
International Journal of Management Science and Information Technology Vol. 6 No. 1 (2026): January - June 2026
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/ijmsit.v6i1.6599

Abstract

Secure cloud infrastructure is necessary for Indonesia's e-learning to undergo a digital transition. This study examines how a data security framework is implemented on a microservices architecture based on Platform-as-a-Service (PaaS). Using a kualitatif approach through case studies, this study integrates the principles of Arsitektur Zero Trust, end-to-end encoding, and service isolation. According to the research findings, this integrated framework can enhance system resilience, speed up security incident response by 65%, and lower the chance of data breaches by up to 87%. The PaaS model's high scalability and inadequate resource control make this framework easily applicable to a variety of other large-scale digital platforms. When creating an e-learning ecosystem that is resistant to cyberattacks, developers and educational institutions can use this research as a strategic guide.
Co-Authors Atika Mutiarachim Atika Mutiarachim Caecilia Sri Haryanti Deewar Mahesa Janti Soegastuti Janti Soegiastuti Nur Atika Yuniarti Nur Atika Yuniarti Puji Setya Sunarka Puji Setya Sunarka Ryan Arya P Sukardi Sukardi