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All Journal JURNAL KIMIA SAINS DAN APLIKASI CCIT (Creative Communication and Innovative Technology) Journal ICIT (Innovative Creative and Information Technology) Journal CICES (Cyberpreneurship Innovative and Creative Exact and Social Science) Journal Cerita: Creative Education of Research in Information Technology and Artificial Informatics Jurnal Akuntansi, Manajemen dan Ilmu Ekonomi (JASMIEN) IAIC Transactions on Sustainable Digital Innovation (ITSDI) Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat International Journal of Business, Marketing, Economics & Leadership International Journal of Business Law, Business Ethic, Business Communication & Green Economics (IJBGE) Academia Open
Ria Wulandari
STIE Kasih Bangsa
Religion Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Social Sciences

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Challenges in Contract Theory: Performance-Based Pay as a Solution to Address Promotion Risk in a Competitive Corporate Environment Ria Wulandari; Yuni Sara
International Journal of Business Law, Business Ethic, Business Comunication & Green Economics Vol. 2 No. 2 (2025): June: International Journal of Business Law, Business Ethic, Business Communica
Publisher : LPPM STIE Kasih Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70142/ijbge.v2i2.359

Abstract

This study examines the challenges in implementing contract theory, particularly related to corporate performance pay as a solution to promotion risk in a competitive environment. Performance-based pay serves to increase employee motivation and reduce uncertainty in promotion, but has the potential to create unhealthy competition and reduce teamwork. This study suggests that a balanced incentive contract design, which combines financial and non-financial rewards, can optimize individual performance without sacrificing team harmony. Although performance-based pay can provide short-term benefits, it is important for companies to consider its long-term impact on employee satisfaction and collaboration within the organization. This study provides theoretical and practical insights for companies in designing fair and effective promotion systems
Pengaruh Paradigma Kepemimpinan dan Kapabilitas Personal Terhadap Fidelitas Tenaga Kerja pada PT Fast Food Indonesia Tbk: Studi Empiris Gerai KFC Wilayah Jakarta Barat Zaelani, Naila; Tanti Sugiharti; Ria Wulandari
Jurnal Akuntansi, Manajemen dan Ilmu Ekonomi (Jasmien) Vol. 5 No. 07 (2025): Jurnal Akuntansi, Manajemen dan Ilmu Ekonomi (Jasmien)
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/jasmien.v5i07.1902

Abstract

Permasalahan penelitian ini berangkat dari tingginya turnover karyawan di enam gerai KFC Jakarta Barat, yang mengindikasikan adanya isu dalam efektivitas kepemimpinan dan kapabilitas personal karyawan. Penelitian ini penting karena fidelitas karyawan merupakan faktor strategis yang memengaruhi stabilitas operasional dan kualitas layanan di industri makanan cepat saji. Penelitian dilakukan menggunakan pendekatan kuantitatif dengan sampel 89 karyawan dari total populasi 115 orang, sesuai kriteria masa kerja minimal enam bulan. Data dikumpulkan melalui kuesioner dan diolah menggunakan software SmartPLS versi 4.1.1.4. Hasil penelitian menunjukkan bahwa paradigma kepemimpinan tidak berpengaruh signifikan terhadap fidelitas tenaga kerja, sedangkan kapabilitas personal berpengaruh positif dan signifikan. Secara simultan, kedua variabel menjelaskan 74,2% variasi fidelitas tenaga kerja. Kesimpulannya, kapabilitas personal merupakan faktor paling dominan dalam membangun fidelitas karyawan, sementara aspek kepemimpinan perlu diperbaiki agar lebih mampu mendukung pembentukan loyalitas tenaga kerja.
Enhanced Bio-Oil Production from Agricultural Waste via NiCl₂-Assisted Pyrolysis: A Comparative Study of Candlenut and Coffee Shells Wulandari, Yeni Ria; Firmansyah, Muhammad Arif; Variyana, Yeni; Haryono, Tri; Sukma, Vinda Avri; Sudibyo, Sudibyo; Purwanto, Nurjan Didik
Jurnal Kimia Sains dan Aplikasi Vol 29, No 2 (2026): Volume 29 Issue 2 Year 2026
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.29.2.119-131

Abstract

Indonesia’s limited fossil fuel reserves, coupled with increasing national energy demand, highlight the need for alternative and renewable fuel sources. Biomass-derived bio-oil produced through pyrolysis represents a promising solution that can both reduce dependence on petroleum-based fuels and mitigate environmental pollution from underutilized biomass waste. This study investigates the production of bio-oil from candlenut shells and coffee shells through pyrolysis at varying temperatures (250, 350, and 450°C), conducted with and without a NiCl2 catalyst. The bio-oil was characterized for yield, density, and viscosity. The highest bio-oil yields from non-catalytic pyrolysis were achieved at 450°C, amounting to 39.14% for candlenut shells and 41.80% for coffee shells. Catalytic pyrolysis using NiCl2 enhanced the bio-oil yield, producing up to 55.78% (candlenut shells at 450°C) and 58.05% (coffee shells at 350°C). Density measurements showed the highest values in catalytic pyrolysis at 250°C, while the lowest densities were observed in non-catalytic pyrolysis at 450°C. Viscosity followed a similar trend, decreasing with increasing temperature and the presence of the catalyst. FTIR analysis confirmed the presence of functional groups including C–O, C=O, C=C, C≡C, C–H, and O–H. Overall, this study demonstrates the potential of candlenut and coffee shell waste as feasible feedstocks for bio-oil production, offering alternative renewable energy sources for future applications.
Application of Science Explore Books on Earth and Solar System Materials to Improve Understanding of Science Concepts for Grade VII Students : Penerapan Buku Jelajah Sains pada Materi Bumi dan Tata Surya untuk Meningkatkan Pemahaman Konsep Sains Siswa Kelas VII Roudhlotul Karomah; Ria Wulandari
Academia Open Vol. 9 No. 2 (2024): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.9.2024.7992

Abstract

Understanding concepts is a very important aspect in learning, especially in science learning where there are many complex concepts and theories so good understanding is needed. The role of educators, methods and teaching materials will be maximized to provide students with a good understanding of concepts. This research aims to determine the increase in students' understanding of science concepts before and after the application of the Science Exploration Book on Earth and Solar System material in class VII by taking samples using a purposive sampling technique. Data collection in this research was in the form of pretest and posttest and analyzed using N-Gain to determine the increase in understanding of concepts that occurred. Based on the research results, there is an increase in the form of differences in the average results of students' pretest and posttest, so it can be concluded that the application of the Science Exploration Book can improve students' understanding of science concepts in Class VII on Earth and Solar System material with a low N-Gain Score category. Highlights: Key role of educators, methods, and materials in science concept understanding. Science Exploration Book enhances Class VII students' grasp of Earth and Solar System concepts. Research shows improvement with a low N-Gain Score category. Keywords: Concept Understanding, Science Exploration Book, N-Gain, Earth, Solar System.
The Effect of Guided Inquiry Learning Model on Student’s Scientific Communication Skills in SMPN 1 Gempol: Pengaruh Model Inkuiri Terbimbing Terhadap Keterampilan Komunikasi Ilmiah Siswa di SMPN 1 Gempol Firdausia Amanda Ari Octaviani; Ria Wulandari
Academia Open Vol. 9 No. 2 (2024): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.9.2024.7993

Abstract

One of the important skills to develop is scientific communication skills, communication is very important in everyday life. This research aims to determine the effect of the guided inquiry learning model on the scientific communication skills of class VII students at SMPN 1 Gempol, Pasuruan Regency. This research is a quasi-experiment conducted with a posttest-only design. The research sample was class VII D students as the experimental class and class VII C students as the control class with each class having 32 students. In this study, environmental pollution material was used in the experimental class, which was treated using the guided inquiry learning model, while the control class used the learning model commonly used by teachers at the school. The results of the research show that there are significant differences in value and influence in the guided inquiry learning model on written and oral scientific communication skills. Highlights: Guided Inquiry Impact: Examines effect on scientific communication skills. Quasi-Experiment Framework: Utilizes posttest-only design for structured assessment. Written and Oral Proficiency: Highlights impact on both communication modes. Keywords: Guided Inquiry, Written Communication Skills, Oral Communication Skills
Interactive Learning Resources for the Digital Age: A Needs Analysis of Digital Textbook Development: Sumber Belajar Interaktif untuk Era Digital: Analisis Kebutuhan Pengembangan Buku Ajar Digital Ria Wulandari; Noly Shofiyah; Machful Indra Kurniawan; Rikhatul Jannah; Kofifah Silfanah
Academia Open Vol. 9 No. 1 (2024): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.9.2024.9127

Abstract

The purpose of this research is to analyze the need for developing digital textbooks as interactive learning aids in the digital era. A survey with a research instrument in the form of a questionnaire was utilized as the research method. The questionnaire was distributed to 40 class VII pupils. Data analysis techniques employ descriptive statistics to identify the primary needs of students, as well as the design and desired interactive elements in digital textbooks. According to the requirements analysis, digital textbooks must have practice questions and answer keys, video and audio, student activity sheets, and relevant pictures. Furthermore, digital textbooks are simple to use, with Indonesian, colorful, easy-to-understand content and easy-to-read font kinds and sizes. These findings will serve as the foundation for the creation of digital textbooks that will improve the efficacy of learning in the digital age. Highlights : Interactive Elements: Digital textbooks should include practice questions, answer keys, multimedia (video and audio), activity sheets, and relevant images. User-Friendly Design: Textbooks need to be easy to use with clear, colorful content, and easy-to-read fonts in the Indonesian language. Educational Impact: The development of digital textbooks based on these findings aims to enhance the effectiveness of learning in the digital age. Keywords : digital era; digital textbook; interactive learning resources; needs analysisv
Learning Science Based on Socio-Scientific Issue: Batik Waste in Jetis Sidoarjo: Belajar IPA Berbasis Socio-Scientific Issue: Limbah Batik Jetis Sidoarjo Siti Adira Salsabilla Rahma; Ria Wulandari
Academia Open Vol. 10 No. 1 (2025): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.13234

Abstract

This study presents the development of a science learning e-book integrating socio-scientific issues within environmental education. General Background: Digital learning resources such as interactive e-books have become increasingly significant in supporting science education in the digital era. Specific Background: Integrating Socio-Scientific Issue (SSI) approaches into science learning enables students to connect scientific concepts with real environmental problems, including batik waste pollution in Jetis Sidoarjo. Knowledge Gap: However, limited digital learning media contextualize local environmental issues within Phase D science curriculum content while systematically promoting higher-order thinking skills. Aims: This study aims to develop an SSI-based science e-book that links environmental pollution and interactions among living organisms with the contextual issue of batik waste. Results: The developed e-book consists of structured materials, issue analysis, observation and evaluation activities, quizzes, reflective tasks, and final projects designed to foster HOTS indicators C4 and C5, supported by interactive navigation and visual communication design. Novelty: The novelty lies in the integration of local batik waste issues into an interactive digital format aligned with the curriculum. Implications: The e-book serves as a supplementary science learning resource that promotes contextual understanding and active student engagement in environmental problem solving. Keywords: Science Learning E-Book, Socio-Scientific Issue, Batik Waste Pollution, Higher-Order Thinking Skills, Environmental Education Key Findngs Highlights: Interactive digital material connects environmental pollution topics with local batik waste cases. Structured analytical and evaluative activities facilitate advanced cognitive processes. Contextual project tasks encourage solution-oriented reasoning in science classes.
e-Book Student Worksheet Based on Socio-Scientific Issues of Batik Waste in Jetis Sidoarjo: e-Book LKPD Berbasis Socio-Scientific Issue Limbah Batik Jetis Sidoarjo Citra Azizah; Ria Wulandari
Academia Open Vol. 10 No. 1 (2025): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.13239

Abstract

General Background: Digital student worksheets are increasingly developed to support contextual science learning in junior secondary education. Specific Background: The integration of socio-scientific issues into electronic worksheets enables students to connect scientific concepts with real environmental problems, including batik wastewater in Jetis Sidoarjo. Knowledge Gap: However, contextual digital worksheets that explicitly integrate local environmental pollution issues into the topic of living organisms and their environment remain limited. Aims: This study aimed to develop an SSI-based e-book LKPD addressing Jetis batik waste as a contextual learning resource. Results: The development process involved needs analysis, content and layout design, project and investigation-based learning activities, expert validation, and instrument validity testing. The e-book contains observation, discussion, and a simple water filtration project to support understanding of ecosystem pollution. The product is accessible through a web link and FlipHTML5 platform. Novelty: The novelty lies in integrating a local batik wastewater issue into a structured digital worksheet based on socio-scientific issues. Implications: This product provides a contextual digital learning resource that supports environmental literacy and connects scientific knowledge with community-based environmental challenges. Keywords: SSI-Based E-book, Student Worksheet Development, Batik Wastewater, Environmental Literacy, Contextual Science Learning Key Findings Highlights: Digital worksheet integrates local wastewater case into ecosystem learning activities. Development includes expert validation and instrument feasibility testing. Learning tasks involve observation, discussion, and simple filtration project.
Pemanfaatan Limbah Cangkang Kemiri Menjadi Briket Ramah Lingkungan melalui Pelatihan kepada KWT Makmur Lestari dan Dharma Wanita KPH Pematang Neba Yeni Ria Wulandari; Amelia Sri Rezki; Fadian Farisan Silmi; Yeni Variyana; Dedi Teguh; Windia Hanifah; Sri Rahayu Widyaningrum; Shintawati Shintawati
Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Vol. 6 No. 2 (2026): Maret 2026 - Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
Publisher : Indonesian Scientific Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59395/altifani.v6i2.950

Abstract

Kegiatan pengabdian masyarakat ini bertujuan untuk meningkatkan pemanfaatan limbah pertanian, khususnya cangkang kemiri, sebagai sumber energi alternatif melalui pelatihan pembuatan briket biomassa. Kegiatan dilaksanakan oleh Tim Pengabdian Masyarakat Politeknik Negeri Lampung (Polinela) di Desa Kedaung, Kecamatan Pardasuka, Kabupaten Pringsewu, yang melibatkan Kelompok Wanita Tani (KWT) Makmur Lestari dan anggota Dharma Wanita KPH Pematang Neba. Pelatihan dilakukan melalui metode edukasi, sosialisasi, demonstrasi, dan praktik langsung, yang mencakup proses karbonisasi, penggilingan, pencampuran perekat, pencetakan, hingga pengeringan briket. Berdasarkan hasil kegiatan, peserta mampu memahami dan mempraktikkan teknik pembuatan briket dari limbah cangkang kemiri secara mandiri. Cangkang kemiri yang sebelumnya hanya menjadi limbah, kini dapat diolah menjadi produk briket dengan nilai kalor tinggi setara batubara sehingga berpotensi mendukung ketahanan energi di tingkat pedesaan. Selain itu, kegiatan ini juga mendorong peningkatan kesadaran masyarakat terhadap pentingnya pemanfaatan energi terbarukan serta memberikan peluang peningkatan ekonomi melalui pemanfaatan limbah bernilai tambah. Dengan demikian, program ini diharapkan menjadi langkah awal dalam pengembangan inovasi energi berkelanjutan berbasis potensi lokal di wilayah pedesaan.
Co-Authors Achmad Rachmat Aditya Giyantono Agus Gunawan Amelia Sri Rezki Astriyani, Erna Bobby Aditya Nugraha Citra Azizah Dani Ramadhan Dedi Teguh DIDIK PURWANTO Dirham Fatra Fatra Dhamara Enik Setiyawati Erwansyah Erwansyah Fadian Farisan Silmi Fahreza, Rivaldy Rifki Firdausia Amanda Ari Octaviani Firmansyah, Muhammad Arif Ifran Sanni Ilamsyah Ilamsyah, Ilamsyah Kofifah Silfanah Machful Indra Kurniawan Naufal Fadhil Alwarits Ngadi Permana Noly Shofiyah Padeli Padeli Rikhatul Jannah Rizki Maulana Kamil Roudhlotul Karomah Selvi Agustina Shintawati Shintawati Siti Adira Salsabilla Rahma Siti Maesaroh Sri Rahayu Widyaningrum Sudibyo Sudibyo Sukma, Vinda Avri Tanti Sugiharti Tri Haryono Variyana, Yeni Windia Hanifah Yuni Roza Yuni Sara Zaelani, Naila