p-Index From 2021 - 2026
13.893
P-Index
This Author published in this journals
All Journal Jurnal Pendidikan Indonesia Primary: Jurnal Pendidikan Guru Sekolah Dasar Jurnal Pendidikan Biologi Indonesia JURNAL IQRA´ Tadbir : Jurnal Studi Manajemen Pendidikan Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal PAJAR (Pendidikan dan Pengajaran) Jurnal Ilmiah Pendidikan dan Pembelajaran JETL (Journal Of Education, Teaching and Learning) Journal of Science Innovare Pedagonal : Jurnal Ilmiah Pendidikan Jurnal Biotek JIMF (JURNAL ILMIAH MANAJEMEN FORKAMMA) SCAFFOLDING: Jurnal Pendidikan Islam dan Multikulturalisme Bio-Inoved : Jurnal Biologi-Inovasi Pendidikan JPPS (Jurnal Penelitian Pendidikan Sains) Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Journal Informatic, Education and Management (JIEM) MURHUM : JURNAL PENDIDIKAN ANAK USIA DINI Journal of Industrial Engineering & Management Research (JIEMAR) International Journal of Social and Management Studies (IJOSMAS) Bioscientist : Jurnal Ilmiah Biologi IJORER : International Journal of Recent Educational Research International Journal of Economy, Education and Entrepreneurship (IJE3) EduBiologia: Biological Science and Education Journal International Journal of Social Service and Research Proceeding Biology Education Conference Kontigensi: Jurnal Ilmiah Manajemen Jurnal Difusi Indonesian Journal of Applied Environmental Studies INTERNATIONAL JOURNAL OF EDUCATION, INFORMATION TECHNOLOGY, AND OTHERS Journal of Social Research Indonesian Journal of Educational Development (IJED) Journal Of World Science International Journal of Multidisciplinary Research and Literature (IJOMRAL) East Asian Journal of Multidisciplinary Research (EAJMR) International Journal of Biology Education Towards Sustainable Development Tadbiruna: Jurnal Manajemen Pendidikan Islam JSEP (Journal of Science Education and Practice) Journal of General Education and Humanities Journal Of Biology Education Research (JBER) Jurnal Pemberdayaan Masyarakat Pedagogia: Jurnal Ilmiah Pendidikan Scientica: Jurnal Ilmiah Sains dan Teknologi Pubmedia Jurnal Penelitian Tindakan Kelas Indonesia JIPI (Jurnal IPA dan Pembelajaran IPA) Kenduri: Jurnal Pengabdian Dan Pemberdayaan Masyarakat Equator Science Journal (ESJ) International Journal of Education, Vocational and Social Science Edubiotik : Jurnal Pendidikan, Biologi dan Terapan Educational Researcher Journal Candradimuka: Journal of Education Proceeding of International Conference on Biology Education, Natural Science, and Technology IJIS Edu : Indonesian Journal of Integrated Science Education Lentera Negeri Journal of Innovative Islamic Education Management Didakta: International Journal of Social Sciences, Language, and Education SUJANA: Education and Learning Review Indonesian Journal of Applied Environmental Studies JIPI (Jurnal IPA dan Pembelajaran IPA) Jurnal Pendidikan dan Pengajaran Guru Sekolah Dasar (JPPGuseda) THABIEA : JOURNAL OF NATURAL SCIENCE TEACHING
Claim Missing Document
Check
Articles

EVALUATION OF THE LIMPAKUWUS PINE FOREST NATURAL TOURISM DEVELOPMENT PROGRAM IN BANYUMAS REGENCY Rohid, Iid; Retnowati, Rita; Istiadi, Yossa
International Journal of Social Service and Research Vol. 5 No. 3 (2025): International Journal of Social Service and Research
Publisher : Ridwan Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/ijssr.v5i3.1211

Abstract

This study aims to evaluate whether the tourism program, implemented by Perum Perhutani/PT, is effective in enhancing economic opportunities and quality of life for residents. The study uses the CIPP (Context, Input, Process, Product) evaluation model, by analyzing primary data from natural tourism managers both by interviews and observations and secondary data (document collection) obtained from related agencies. The results of the research on environmental issues, legal frameworks, technical guidelines, funding sources, and the overall effectiveness of the program have provided added value for both parties. The conclusion from the study is that the cooperation program for the management of natural tourism objects in the Limpakuwus Pine Forest implemented by PT Palawi Risorsis with the LMDH has provided additional value for the two parties. This study provides a comprehensive analysis that complements existing literature while addressing its limitations.
E-Module of the Human Digestive System with Self-Directed Learning Readiness Framework to Improve Students' Science Literacy Syahira, Hany Qisthina; Pursitasari*, Indarini Dwi; Retnowati, Rita; Syarpin, Syarpin
Jurnal IPA & Pembelajaran IPA Vol 9, No 4 (2025): DECEMBER 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v9i4.48969

Abstract

Science literacy is a crucial competency in addressing the challenges of 21st-century learning. Low science literacy in biology subjects is important in science education. This research aims to develop e-modules for the human digestive system based on the self-directed learning readiness (SDLR) framework to enhance students' science literacy and independent learning readiness. This development research uses the analyze, design, develop, implement, and evaluate (ADDIE) model. Data were collected through expert validation tests, science teacher assessments, science literacy tests, SDLR questionnaires, implementation observations, and student response questionnaires to e-modules. The data was analyzed descriptively, quantitatively, and using N-Gain calculations. The results of the study demonstrate that the e-module on the human digestive system is proven to be valid, based on expert assessment with Aiken's V index of 0.84. The results of the teacher's assessment also demonstrated high validity, with content validity ratio (CVR) and contet validity index (CVI) scores of 0.98 and 0.99, respectively. The results of implementing the e-module showed an increase in science literacy and SDLR, with N-gains of 0.349 and 0.426 in the medium category. The highest increase occurred in the competence of explaining scientific phenomena and the desire to learn, with an N-gain of 50% each. Students responded positively to the e-module because it is easily accessible, attractive, and able to motivate students to learn independently. Thus, it can be concluded that the e-module on the human digestive system, based on self-directed learning readiness, can improve science literacy and students' readiness for independent learning
Systematic Literature Review of Barriers to Teachers’ Professional and Digital Competence in Developing Contexts (2020–2025) Siti Yulaikhah; Suhendra; Rita Retnowati; Nandang Hidayat
Journal Informatic, Education and Management (JIEM) Vol 8 No 1 (2026): FEBRUARY (CALL FOR PAPERS)
Publisher : STMIK Indonesia Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61992/jiem.v8i1.240

Abstract

This systematic literature review (SLR) examines the barriers hindering the development of teachers’ professional and digital competence in developing countries between 2020 and 2025. The study integrates findings from 30 peer-reviewed journal articles indexed in Scopus, Web of Science, and Google Scholar. Using the PRISMA 2020 framework, the review identifies five major categories of barriers: (1) individual factors (motivation, self-efficacy, and digital anxiety), (2) institutional and organizational constraints, (3) infrastructural and technological limitations, (4) policy and governance barriers, and (5) socio-cultural and contextual factors. The results reveal that teachers in developing regions face interrelated structural and psychological obstacles that limit their capacity to integrate digital technologies and sustain professional growth. The paper concludes with a conceptual synthesis outlining the need for holistic, context-aware professional development programs and equitable digital access policies.
INCREASING TEACHERS' CREATIVITY THROUGH THE DEVELOPMENT OF ORGANIZATIONAL CULTURE, EMPOWERMENT AND VISIONARY LEADERSHIP OF SCHOOL PRINCIPLES Makhrus, Makhrus; Sunardi, Oding; Retnowati, Rita
International Journal of Social and Management Studies Vol. 3 No. 2 (2022): International Journal of Social and Management Studies (IJOSMAS)
Publisher : IJOSMAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.31 KB) | DOI: 10.5555/ijosmas.v3i2.113

Abstract

Teacher creativity in the learning process is actions that are deliberately taken by teachers to develop, convey and use new or different ideas from before in carrying out interactive, interesting and effective learning activities so as to improve learning outcomes.Based on the preliminary survey data, the above conditions can be concluded that the creativity of State MTs teachers in the work environment of the Ministry of Religion of East Jakarta City is still low. Therefore it needs to be upgraded to a better stage. However, the improvement in question, especially in terms of increasing teacher creativity, requires sufficient time because it is related to various factors that influence it. These factors include; organizational culture, empowerment and visionary leadership of school principals. The population in this study were PNS MTs Negeri teachers in the East Jakarta City area, totaling 622 people from 17 schools. The sampling technique used is a random sampling technique (proportional random sampling). Samples were taken using the Taro Yamane formula with a sampling error rate of 5%. The results of the calculation of the number of samples are 243 people.The results showed: 1) There is a positive relationship between organizational culture and teacher creativity so that strengthening organizational culture can increase teacher creativity, 2). There is a positive relationship between empowerment and teacher creativity so that strengthening empowerment can increase teacher creativity, 3). There is a positive relationship between school principal's visionary leadership and teacher creativity so that strengthening principal's visionary leadership can increase teacher creativity, 4). There is a positive relationship between organizational culture and empowerment together with teacher creativity so that strengthening organizational culture and empowerment together can increase teacher creativity, 5). There is a positive relationship between organizational culture and the principal's visionary leadership together with the creativity of teachers so that the strengthening of organizational culture and the principal's visionary leadership together can increase the creativity of teachers, 6). There is a positive relationship between empowerment and visionary leadership of school principals together with teacher creativity so that strengthening empowerment and visionary leadership of principals together can increase teacher creativity, 7) There is a positive relationship between organizational culture, empowerment and visionary leadership of principals collectively. together have a positive relationship with teacher creativity so that strengthening organizational culture, empowerment and visionary leadership of school principals together can increase teacher creativity
Strengthening Gotong Royong as a Strategy to Improve Organizational Citizenship Behavior of Junior High School Teachers: A Study at the Mardi Yuana Foundation Irianto Segu, Yosef; Kadar, Isman; Retnowati, Rita
IJORER : International Journal of Recent Educational Research Vol. 7 No. 2 (2026): March
Publisher : Faculty of Teacher Training and Education Muhammadiyah University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46245/ijorer.v7i2.1297

Abstract

Objective: This study aims to explore the role of gotong royong (the value of local wisdom that emphasizes collective responsibility and mutual help) in improving the Organizational Citizenship Behavior (OCB) of teachers in the junior high school of the Mardi Yuana Foundation. Research considers it important to integrate local values in sustainable and authentic organizational behavior improvement strategies. Methods: Quantitative research with path analysis and SITOREM analysis was conducted on 138 teachers (out of a population of 210) from Yayasan Mardi Yuana junior high schools in West Java and Banten using proportional random sampling. Data were collected using a validated questionnaire (Cronbach's Alpha = 0.966) containing 35 valid question items that measured five variables: mutual cooperation (6 items), organizational culture (7 items), personality (8 items), transformational leadership (8 items), and OCB (6 items). Data analysis was conducted using SPSS with prerequisite test stages, path analysis, and SITOREM analysis. Results: Preliminary survey data showed significant challenges in teachers' OCB: 67.7% faced problems in mutual compassion (altruism), 51.5% with civic virtue, 51.5% with courtesy, and 67.7% with sportsmanship. This gap between the ideal OCB (das solen) and reality (das sein) shows the need for strategic intervention. This study identifies gotong royong as a potential strategy to overcome these gaps through strengthening authentic local values in the culture of educational organizations. Novelty: This research uniquely integrates the values of local Sundanese wisdom (the four pillars of mutual cooperation: silih asih, silih ahon, silih asuh, and silih wangi) into the framework of the universal OCB theory. This integration has not been widely explored in previous education management research. This approach based on local wisdom offers contextually and culturally relevant solutions to improve the effectiveness of educational organizations in Indonesia, with implications for the development of authentic and sustainable educational leadership
Strategies to Strengthen Group Cohesion, Stress Management, Self-Awareness and Creativity to Improve Teacher Work Effectiveness: A Study in Tasikmalaya Regency Evi Fitriyanti; Eka Suhardi; Rita Retnowati
Jurnal Iqra' : Kajian Ilmu Pendidikan Vol. 10 No. 1 (2025): Jurnal Iqra' : Kajian Ilmu Pendidikan
Publisher : Institut Agama Islam Ma'arif NU (IAIMNU) Metro Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25217/ji.v10i1.5823

Abstract

This study investigates the influence of group cohesion, stress management, self-awareness, and creativity on the work effectiveness of elementary school teachers in Tasikmalaya Regency. Employing an exploratory sequential mixed-methods design, the research integrates qualitative and quantitative approaches. The qualitative phase involved in-depth interviews and observations, while the quantitative phase collected data from 163 proportionally randomized ASN (Aparatur Sipil Negara) teachers through structured questionnaires. Data analysis was conducted using Structural Equation Modeling-Partial Least Squares (SEM-PLS), complemented by the System Improvement Through Organizational Renewal and Empowerment (SITOREM) method to prioritize development indicators. The findings reveal that group cohesion, stress management, and self-awareness significantly and positively influence teacher creativity, which in turn mediates their impact on work effectiveness. Among the variables, self-awareness emerges as the strongest direct predictor of work effectiveness, whereas group cohesion exerts the most substantial influence on enhancing creativity. Creativity serves as a crucial mediating factor, bridging psychosocial factors and overall teacher performance. These results underscore the importance of fostering a collaborative work culture, implementing effective stress management initiatives, promoting self-reflective practices, and cultivating creative pedagogical approaches. This research contributes to the body of knowledge on teacher development by integrating psychosocial and professional dimensions into a comprehensive framework. The study offers valuable insights for policymakers and school leaders in advancing educational transformation in alignment with the vision of a Golden Indonesia 2045.
Predicting Organizational Citizenship Behavior Through Culture, Personality, and Transformational Leadership Yosef Irianto Segu; Isman Kadar; Rita Retnowati
International Journal of Education, Vocational and Social Science Vol. 5 No. 02 (2026): International Journal of Education, Vocational and Social Science( IJVESS)
Publisher : Cita konsultindo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/ijevss.v5i02.3153

Abstract

This study examines Organizational Citizenship Behavior (OCB) as a key determinant of organizational effectiveness within the Mardi Yuana Foundation, which operates under competitive pressures and resource constraints. OCB has gained increasing importance in modern organizational transformation, as highlighted by Deloitte (2023), reporting a 23% productivity increase in highly engaged organizations, and Kim and Park (2022), emphasizing OCB’s role in resilience and innovation. This research aims to analyze both direct and indirect effects of mutual cooperation, organizational culture, personality, and transformational leadership on OCB, as well as to identify priority improvement areas using the SITOREM approach. A quantitative survey method was employed involving 138 respondents selected through proportional random sampling. Data were analyzed using Path Analysis and SITOREM. The findings reveal that mutual cooperation has a significant positive direct effect on OCB (β=0.603), while organizational culture, personality, and transformational leadership do not have significant direct effects. However, all variables demonstrate significant indirect effects through transformational leadership as a mediating variable. This study contributes by providing an integrative, evidence-based model and actionable insights for enhancing OCB strategically.
Development of Interactive Multimedia Based on Problem-Based Learning on Ecosystem Material to Improve the Analytical Skills of Senior High School Students Suci Siti Lathifah; Rita Retnowati; Suryani Suryani
Equator Science Journal Vol. 3 No. 1 (2025): Equator Science Journal (ESJ)
Publisher : CV. Dharma Samakta Edukhatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61142/esj.v3i1.147

Abstract

This research aims to develop interactive multimedia based on Problem Based Learning that can be installed on Android, and test the effectiveness of its use on the ability to analyse students' ecosystem material. This research is a type of Research and Development, this research was conducted at one of the Bogor Regency State High Schools with the research sample, namely IPA 6 class as the experimental class. The novelty of this research lies in the development of interactive multimedia based on Problem-Based Learning (PBL) specifically designed for ecosystem material to improve the analytical skills of senior high school students, which has not been extensively explored in the context of science education. This development research procedure uses the (4D) model consisting of 4 stages, namely Define, Design, Develop, and Disseminate. The field trial implementation used a one group pretest-postest research design. The techniques used were tests (pre-test and post-test), checklist questionnaire sheets, and documentation. The assessment results show that interactive multimedia gets a very feasible category. This is based on the average percentage of assessment from the expert validation team which is 87%. Interactive multimedia based on Problem Based Learning on android is proven to be effective in improving the ability to analyse students, with an N-gain value of 68.02 included in the medium category. This shows that interactive multimedia based on Problem Based Learning can improve students' analytical skills.
STRATEGY TO IMPROVE INSTRUCTOR PERFORMANCE THROUGH IMPROVING PERCEIVED ORGANIZATIONAL SUPPORT, SERVANT LEADERSHIP, TEAMWORK, EMPLOYEE ENGAGEMENT AND WORK MOTIVATION OF BBPLK INSTRUCTORS IN WEST JAVA PROVINCE Tanti Susilarini; Rita Retnowati; Dian Wulandari
TADBIRUNA: Jurnal Manajemen Pendidikan Islam Vol 5 No 2 (2026): TADBIRUNA
Publisher : Program Studi Manajemen Pendidikan Islam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51192/jurnalmanajemenpendidikanislam.v5i2.2498

Abstract

The performance of instructors at the Vocational Training and Productivity Center (BBPLK) in West Java faces several challenges, including limited perceived organizational support, incomplete servant leadership practices, weak teamwork, and low employee engagement and work motivation. This study aims to analyze strategies to improve instructor performance by strengthening perceived organizational support, servant leadership, teamwork, employee engagement, and work motivation. A quantitative survey method was employed using Path Analysis and SITOREM analysis. The sample consisted of 133 instructors selected proportionally from a population of 198 instructors at BBPLK Bandung and Bekasi. The results show that all independent variables have a significant positive direct effect on performance, with perceived organizational support as the strongest predictor (beta = 0.303). Perceived organizational support, servant leadership, and teamwork also significantly influence employee engagement and work motivation. Employee engagement and work motivation function as mediating variables, although their contribution is relatively small. SITOREM analysis identifies priority areas for improvement, including efficiency, fairness, member development commitment, team synergy, vigor, and recognition. The findings suggest that improving instructor performance requires an integrated approach combining organizational support, servant leadership, teamwork, engagement, and motivation.
Strengthening Organizational Culture, Personality, Trust and Work Motivation in an Effort to Improve Teacher Performance Winda Suci Lestari Nasution; Soewarto Hardhienata; Rita Retnowati
Journal of Social Research Vol. 3 No. 4 (2024): Journal of Social Research
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to improve the performance of public junior high school teachers in Purwakarta Regency by strengthening organizational culture, personality, trust, and work motivation. The research used Path Analysis and SITOREM Analysis to analyze the data. The study involved 1,831 teachers across 78 schools in 17 sub-districts. Results showed that organizational culture, personality, confidence, motivation, trust, and motivation significantly influenced teacher performance. The indicators that were maintained or developed were conscientiousness, agreeableness, emotional stability, support from superiors, teaching planning and preparation, application of teaching methods and strategies, use of learning media, and behavior in managing classes. The study also identified indicators that needed immediate improvement. The findings will be used as recommendations for teachers, principals, school supervisors, and related education offices.
Co-Authors Abda Abda Agung Sofyan Anggita Yunnanda Apiani, Nurisa Aprilia Serephina Gultom Aris Munandar Asep Suhendar Astagini, Pahmi Astaryadi, Eka Soni Bambang Nurcahyono D Prasetyorini Dadang Jaenudin Desti Herawati, Desti Devi Putri Ardiyani Dewi Ratna Dewi Rexar Giri Kusumah Dian Wulandari Dian Wulandari Diana Vivanti Sigit Diana Vivanti Sigit Didik Notosudjono Didit Ardianto Dolly Priatna Dwia Arfianti Eka Suhardi Ekamilasari Ekamilasari Ekamilasari Elin Asrofah Qibtiah Ely Rusliati Ening Yuningsih Entis Sutisna Eri Sarimanah Erie Hermawan Atmawidjaja Esa Rahma Heryawati Eva Nurul Candra Evi Fitriyanti Fajar Anggraeni Falih Setyonegoro, Murfid Fanny Nadia Hardjo Fitri, Silvi Agnia Griet Helena Hany Qisthina Syahira Hardjo, Fanny Nadia Hari Muharam Hasbu Burhanudin Hendarman Hendarman Hendarman Herdiana Herdiana Herfina Herfina Herlina . Hernaeny, Ul’fah Huri Suhendri Ida Rachmawati Ida Zuraida Iin Iryance Iis Farida Zein Ika Rosmalasari Ikhsan Ikhsan Ila Nafilah Ilmi Zajuli Ichsan Indarini Dwi Pursitasari Indrati, Briliantina Indri Yani Indriyani Rachman Irianto Segu, Yosef Irvan Permana Irvan Permana Irwan Siagian Isman Kadar Ismi Senjayani Istiadi, Yossa Junanto, Try Kabul Praptiyono Kadar, Isman Karantiano Sadasa Putra Koswara, Dudung Laihad, Griet Helena Lathifah, Suci Siti Leny Heliawati Lina Lina Lina Novita Mailizar Mailizar Mamat Surahmat Marlina Marlina Martahani Mas Ning Zahroh Md. Mehadi Rahman Md. Mehadi Rahman4 Muhammad Taufik Awaludin Muhammad Taufik Awaludin Munarti Munarti Munawar, Rizal Muharam Murfid Falih Setyonegoro Nadiroh Nanda Khairunnisa Nandang Hidayat Nandang Hidayat Nono Yatno Nur Humairoh Umi Nurhayati Nurlaela Mei Tienje Nurma Tambunan Octavita, Rr.Astri Indriana Pandu Satyabrata Pranowo, Agus Setya Prasetyorini Djarot Prasetyorini Prasetyorini Prihandini, Agustina Isworo Prihastuti Harsani Puja Subekti Putri Nabila Adinda Adriansyah R. Teti Rostikawati R. Udhaya Mohan Babu R. Udhaya Mohan Babu Rahmawati Darussyamsu Rahmawati Darussyamsu Rais Hidayat Rais Hidayat Raja Raya Saragih Ramdinawati Syam, Yulia Ramliyani, Come Reni Herawati Riani, Aqsya Rita Istiana Rita Ningsih Rizki Amarullah Alqorni Rizki Amarullah Alqorni Rohid, Iid Romi Suarti Rosadi Rosadi Rosalina Dewi Heryani Rosyid, Ainur Salsabilla, Bella SATA YOSHIDA SRIE RAHAYU Senjayani, Ismi Siti Halimah Siti Yulaikhah Siti yulaikhah Situmorang, Marningot Tua Natalis Soewarto Hardhienata Solihatun, Solihatun Sri Ainiyyah Putri Sri Setyaningsih Sri Wahyuni Suci Putri Lestari Sugiarti Sugiarti Suhendra Suhendra Suhendra Suhendra Suhendra Suhendra Sumaryoto Sumaryoto, Sumaryoto Sunardi, Oding Sunaryo, Widodo Surti Kurniasih Surti Kurniasih Surti Kurniasih Surti Kurniasih Surti Kurniasih Suryani Suryani Susanto, Lufty Hari Sutji Harijanto Sutjihati, Susi Syahira, Hany Qisthina Syarifah Zahrah Syarpin syarpin, syarpin Tamara Rončević Tamara Rončević Tanti Susilarini Teti Rostikawati Thamrin Abdullah Tini Sulastri Sihombing Tintin Retno Pramesti Titin Sri Wartini Tri Maryanto Triasianingrum Afrikani Trio Ageng Prayitno Vinsensius Felix Putra Andy Liman Wahardi Wahardi Wahyu Wijanarko Wardhani, Annisa Choerinita Kusuma Widharnati Widharnati Widodo Sunaryo Winda Suci Lestari Nasution Yani Suryani Yeni Widiyawati yohamintin, yohamintin Yosef Irianto Segu Yossa Istiadi Yulia Nurfitri Yulia Ramdinawati Syam Yuliani Taufik Yuyun Yuliani Yuyun Yuliani