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Zaenal Arifin
Jurusan Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro, Jl Prof Soedarto, SH. Tembalang Semarang.
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Penerapan Model Flipped Classroom Berbantuan Short Video Tips and Trick untuk Meningkatkan Kemampuan Pemecahan Masalah Syafa'atin, Nur; Arifin, Zaenal; Haryono, Heny Ekawati
Polinomial : Jurnal Pendidikan Matematika Vol. 4 No. 3 (2025)
Publisher : Papanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56916/jp.v4i3.1989

Abstract

This study aims to identify the differences in mathematical problem-solving abilities between students taught using the Flipped Classroom learning model with the aid of Short Video Tips and Tricks media and students taught using the conventional learning model. This research uses a quantitative approach. The type of research that has been used is a quasi-experiment. The research sample consisted of 62 students from the 10th grade at SMK NU 1 Karanggeneng, comprising 31 students in the experimental group and 31 students in the control group. The sampling for this research was conducted using the Cluster Random Sampling technique. The instrument used in this study is a test instrument in the form of a pretest and posttest to measure students' mathematical problem-solving abilities. Data analysis was conducted by applying the t-test with prerequisite tests including normality and homogeneity tests. The t-test data analysis yielded significant results (sig 2-tailed) <0.001. Considering the significance value is lower than 0.05, it can be stated that there is a significant difference between the two groups. This indicates that the Flipped Classroom learning model supported by Short Video Tips and Tricks media effectively improves students mathematical problem-solving abilities.
Evaluasi Indeks Konsumsi Energi Listrik di Rumah Sakit Daerah Umum R.A. Kartini Jepara Kurniawan, Samuel; Safrizal, Safrizal; Arifin, Zaenal
Mestro: Jurnal Teknik Mesin dan Elektro Vol 7 No 1 (2025): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v7i1.678

Abstract

This study aims to evaluate the electrical energy consumption index at the R.A. Kartini Regional General Hospital (RSUD Jepara). Electrical energy efficiency is a crucial aspect in the management of modern health facilities, especially in efforts to reduce operational costs and environmental impacts. Hospitals as facilities that operate 24 hours have high energy consumption, especially for medical equipment, air conditioning systems, and lighting. This study uses a quantitative descriptive analysis method by processing electricity consumption data in 2018 obtained from official hospital documents. The results showed that the total installed power at the R.A. Kartini Regional General Hospital Jepara reached 1,410,005 VA, with the largest distribution of energy use in medical devices (51.5%), air conditioning systems (38.7%), and mechanical equipment (20.7%) The hospital's Energy Consumption Index (IKE) was calculated at 146 kWh/m²/year, which is included in the "fairly efficient" category according to Indonesian national standards (180-280 kWh/m²/year). However, there is still room for increased efficiency, especially in air conditioning and lighting systems. The research findings show that the application of inverter technology in the AC system, replacing conventional lamps with LEDs, and optimizing the use of mechanical equipment can result in energy savings of up to 25-30%. This study recommends the implementation of a comprehensive energy management system, including periodic energy audits, increasing equipment efficiency, and educating staff about energy-saving practices. With these steps, RSUD R.A. Kartini Jepara can achieve the IKE target of 102-110 kWh/m²/year, approaching international best practices. In addition, this study also provides an important contribution to energy conservation efforts in the health sector, especially in supporting national and global policies on energy sustainability
Strategi Guru dalam Meningkatkan Motivasi Belajar Siswa pada Mata Pelajaran Pendidikan Agama Islam Khoerunnisa, Risyda Aini; Fathurrohman, N; Arifin, Zaenal
Permata : Jurnal Pendidikan Agama Islam Vol. 2 No. 2 (2021): Permata : Jurnal Pendidikan Agama Islam
Publisher : Lembaga Publikasi Ilmiah Universitas Islam Bunga Bangsa Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47453/permata.v2i2.416

Abstract

A motivational strategy in learning is a plan that includes a series of activities spescifically designed and developed to meet certain educational goals. Therefore, it is necessary to realize the goals of an ideal education plan in accordance with educational values. Therefore, teachers must have a learning motivation strategy to inspire students to learn in a fun, interesting and not monotonous way. To achieve the goal of increasing student motivation, teachers must increasingly choose and apply motivational teaching strategies, methods, and methods that are in accordance with these abilities. The purpose of this study is describing teachers strategies applied in increasing student motivation in Islamic Religious Education subjects and describing the increase in students learning motivation in the subject of Islamic Religious Education. Abstrak Strategi motivasi dalam pembelajaran adalah suatu rencana yang mencakup serangkaian kegiatan yang dirancang dan dikembangkan secara khusus untuk memenuhi tujuan pendidikan tertentu. Oleh karena itu, perlu diwujudkan tujuan dari rencana pendidikan yang ideal sesuai dengan nilai-nilai pendidikan. Oleh karena itu, guru harus memiliki strategi motivasi belajar untuk menginspirasi peserta didik agar belajar dengan cara yang menyenangkan, menarik dan tidak monoton. Untuk mencapai tujuan meningkatkan motivasi siswa, guru harus semakin memilih dan menerapkan strategi, metode, dan metode pengajaran motivasi yang sesuai dengan kemampuan tersebut. Tujuan penelitian ini adalah mendeskripsikan strategi guru yang diterapkan dalam meningkatkan motivasi belajar siswa pada mata pelajaran Pendidikan Agama Islam serta mendeskripsikan peningkatan motivasi belajar siswa pada mata pelajaran Pendidikan Agama Islam.
Trends and Determinants of Financial Distress: Evidence from Two-Decade Studies Rahayu, Nur Ellyanawati Esty; Kusuma, Hadri; Arifin, Zaenal
Jurnal Minds: Manajemen Ide dan Inspirasi Vol 12 No 2 (2025): December
Publisher : Management Department, Universitas Islam Negeri Alauddin Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/minds.v12i2.56739

Abstract

This study maps trends and developments in financial distress research on publicly listed firms, highlighting themes, methods, and contexts to expose gaps for future work. Its contribution lies in offering a systematic, mixed-method review covering two decades of studies (2004–2024), which clarifies how the field has evolved and where it must advance. Articles were retrieved through Publish or Perish using the Scopus database, yielding insights into dominant themes of financial performance, corporate governance, and ownership structure. Current discourse gravitates around financial distress as a broad phenomenon, its occurrence in listed companies, and country-specific contexts. Looking forward, research opportunities cluster around financial distress prediction, turnaround strategies, and comparative country evidence. The findings equip scholars and practitioners with a structured view of existing knowledge while guiding targeted inquiry, ensuring future studies address pressing blind spots and enhance the practical utility of financial distress scholarship.
REPOSISI KEWENANGAN ANTAR LEMBAGA NEGARA DALAM PENGATURAN TERKAIT PERTAHANAN KEAMANAN KEMARITIMAN NASIONAL Ardyantara, David Maharya; Sukarna, Kadi; Sadono, Bambang; Arifin, Zaenal
JURNAL USM LAW REVIEW Vol. 3 No. 2 (2020): NOVEMBER
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/julr.v3i2.2593

Abstract

Tujuan dari penelitian ini adalah untuk mengkaji bagaimana posisi kewenangan antar lembaga negara dalam   pengaturan terkait pertahanan   keamanan kemaritiman nasional dan bagaimana reposisi kewenangan antar lembaga negara dalam   pengaturan terkait pertahanan keamanan kemaritiman nasional. Posisi dan reposisi tentang kewenangan antar lembaga negara yang terkait dengan pertahanan keamanan maritim nasional sangat berpengaruh kepada kedaulatan maritim nasional menuju Indonesia sebagai poros maritim dunia. Indonesia dapat digolongkan sebagai negara kepulauan tetapi belum dapat digolongkan sebagai negara maritim karena kewenangan dalam pertahanan keamanan maritim masih terjadi tumpang tindih kewenangan. Sehingga perlu dilakukan   reposisi kewenangan antar lembaga negara dalam   pengaturan terkait pertahanan keamanan kemaritiman nasional. Metodelogi penelitian yang digunakan adalah yuridis normatif. Berdasar analisa terdapat lima lembaga negara yang benar-benar terkait dengan pertahanan dan keamanan maritim di perairan Indonesia yang terdiri dari TNI AL,Badan Keamanan Laut,Kepolisian,Kesatuan Penjaga Laut dan Pantai, Direktorat Pengawasan Sumber Daya Kelautan Perikanan. Kedua peraturan perundangan ini secara spesifik menggarisbawahi pentingnya menciptakan sistem pertahanan keamanan maritim, dan kewajiban dalam menjaga keselamatan pelayaran. Pendekatan teoritik dilakukan mellaui Teori Sistem Hukum, Teori Kedaulatan dan Teori Kewenangan. Hasil yang didapatkan dalam reposisi kewenangan antar lembaga negara adalah : menempatkan TNI AL sebagai lembaga militer murni di wilayah maritim sebagai komponen utama   pertahanan maritim nasional  seperti diamanatkan pada Pengaturan Tata Ruang Laut yang tercantum dalam UU Nomor 17 tahun 1985 tentang ratifikasi UNCLOS 1982. Serta optimalisasi Bakamla sebagai koordinator tunggal lembaga sipil negara dalam keselamatan dan keamanan laut (sea and coast guard). Sekaligus sinegitas TNI dengan Bakamla sebagai reperesentasi lembaga militer dan lembaga sipil negara. 
REPOSISI ATAS PENGURANGAN PENGHASILAN KENA PAJAK DENGAN MEMBAYAR ZAKAT SEBAGAI UPAYA PENINGKATAN KESADARAN MASYARAKAT DALAM MEMBAYAR ZAKAT Nugroho, Erik Eko; Arifin, Zaenal; Sulistyani, Diah; Soegianto, Soegianto
JURNAL USM LAW REVIEW Vol. 3 No. 2 (2020): NOVEMBER
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/julr.v3i2.2824

Abstract

Tujuan penelitian ini adalah untuk mengkaji dan menganalisis reposisi zakat atas pengurangan penghasilan kena pajak dengan membayar zakat sebagai upaya peningkatan kesadaran masyarakat dalam membayar zakat. Zakat dan pajak bagi umat muslim merupakan beban ganda yang wajib dipenuhi. Untuk meminimalisasi dua kewajiban tersebut dibuat kebijakan dimana zakat yang telah dibayarkan bisa mengurangi Penghasilan Kena Pajak (PKP). Metode pendekatan dalam penelitian ini adalah yuridis sosiologis, data yang digunakan adalah data primer dan data sekunder, teknik pengumpulan data adalah studi lapangan dan studi kepustakaan sedangkan teknik analisis data menggunakan analisis kualitatif. Hasil penelitian menunjukkan bahwa pengaturan atas pengurangan penghasilan kena pajak dengan membayar   zakat sebagai upaya peningkatan kesadaran masyarakat dalam membayar zakat adalah zakat yang telah dibayarkan melalui lembaga zakat yang disahkan oleh pemerintah  dapat digunakan sebagai pengurang panghasilan kena pajak (PKP) sehingga pajak yang harus dibayar menjadi berkurang. Reposisi atas pengurangan penghasilan kena pajak dengan membayar   zakat sebagai upaya peningkatan kesadaran masyarakat dalam membayar zakat layak dilakukan mengingat masih rendahnya kesadaran masyarakat dalam membayar zakat. Masyarakat yang awalnya merasa keberatan atas beban ganda yaitu kewajiban berupa pajak dan zakat, dapat menjalankan kewajiban membayar pajak dan zakat seiring sejalan.
Penyelesaian Sengketa Hak Cipta antara Pencipta Lagu dan Penyanyi De Fila Asmara, Callesta Aydelwais; Arifin, Zaenal; Mubarok Anwar, Fahruddin
JURNAL USM LAW REVIEW Vol. 6 No. 2 (2023): AUGUST
Publisher : Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/julr.v6i2.7499

Abstract

The purpose of this research is to examine the resolution of copyright disputes between Ahmad Dhani and Once Mekel from the perspective of the Copyright Law and legal protection for copyright holders. Copyright infringement of songs by performing cover versions of songs at concerts or musical performances is one of the issues related to copyright violations in Indonesia. Copyright infringement occurs when a singer, without the permission of the song's creator, performs a song at a commercial music concert that violates both moral and economic rights. This research uses a normative juridical method. Based on the research results, it is evident that the legal protection of song copyright holders is accommodated in Law No. 28 of 2014 concerning Copyright. Legal protection for song copyright is an effort to ensure the certainty of fulfilling the rights of copyright holders, both in terms of moral rights and economic rights. Protection of song copyright can be done preventively and repressively. As for the resolution of the dispute between Ahmad Dhani and Once Mekel, it was ultimately resolved through non-litigation dispute resolution through mediation.Tujuan penelitian ini untuk mengkaji penyelesaian perselisihan hak cipta antara Ahmad Dhani dan Once Mekel tinjauan dari Undang-Undang tentang Hak Cipta dan perlindungan hukum pemegang hak cipta. Pelanggaran hak cipta karya lagu dengan cara menyanyikan ulang lagu di konser atau pentas musik merupakan salah satu topik permasalahan dalam pelanggaran hak cipta di Indonesia. Pelanggaran hak cipta terjadi ketika penyanyi tanpa seizin dari pencipta lagu menyanyikan lagu pada konser musik komersial yang melanggar hak moral dan hak ekonomi. Penelitian ini menggunakan metode  yuridis normatif. Berdasarkan hasil penelitian menunjukkan perlindungan hukum pemegang hak cipta lagu diakomodir di Undang-Undang No 28 Tahun 2014 tentang Hak Cipta. Perlindungan hukum atas hak cipta lagu merupakan upaya yang menjamin adanya kepastian pemenuhan hak pemegang hak cipta lagu, baik itu berupa hak moral maupun hak ekonomi. Perlindungan hak cipta lagu dapat dilakukan dengan cara preventif dan represif. Mengenai penyelesaian sengketa Ahmad Dhani dan Once Mekel pada akhirnya diselesaikan melalui penyelesaian sengketa non litigasi dengan cara mediasi.  
Pelatihan Penerapan Trigger dan Stored Procedure Database Pada Siswa Sekolah Menengah Kejuruan Negeri 2 Semarang Winarno, Agus; Erawan, Lalang; Irawan, Candra; Muslih, Muslih; Suharnawi, Suharnawi; Arifin, Zaenal; Fahmi, Amiq
ABDIMASKU : JURNAL PENGABDIAN MASYARAKAT Vol 8, No 3 (2025): Vol 8, No 3 (2025): SEPTEMBER 2025
Publisher : LPPM UNIVERSITAS DIAN NUSWANTORO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62411/ja.v8i3.3021

Abstract

SMK Negeri 2 Semarang yang berdiri sejak tahun 1951 terus beradaptasi untuk memenuhi tuntutan dunia industri, salah satunya dengan meningkatkan kompetensi siswa melalui Uji Kompetensi Keahlian (UKK). Salah satu tantangan yang dihadapi adalah masih terbatasnya pemahaman guru dan siswa jurusan Rekayasa Perangkat Lunak (RPL) mengenai pemanfaatan trigger dan stored procedure dalam pengelolaan basis data untuk efisiensi, keamanan, dan otomasi sistem informasi. Metode pelaksanaan pelatihan terdiri dari tahap persiapan, pelaksanaan, evaluasi, dan pelaporan kegiatan. Hasil evaluasi menunjukkan adanya peningkatan pengetahuan dan pemahaman yang signifikan. Pemahaman awal terhadap materi pelatihan berkisar antara 12,5% sampai dengan 37,5%. Setelah mengikuti pelatihan, baik guru maupun siswa menunjukkan peningkatan pengetahuan dan pemahaman sebesar 100%. Hasil penilaian menunjukkan bahwa pelatihan ini efektif dalam meningkatkan pengetahuan, pemahaman, dan kemampuan siswa dalam pengelolaan basis data khususnya trigger dan stored procedure . Simpulan dari pelatihan ini adalah keberhasilannya dalam menjembatani kesenjangan pengetahuan dan mendukung kesiapan siswa dalam memasuki dunia kerja industri.
Implementation of a Water Nutrient Monitoring System for Integrated IoT-Based Hydroponics at CV Tirta Fertindo Purnomo, Ananda Pandu Candra; Assariy, Annas Faiz; Prastiawan, Galih; Arifin, Zaenal
(JAIS) Journal of Applied Intelligent System Vol. 10 No. 1 (2025): April 2025
Publisher : LPPM Universitas Dian Nuswantoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62411/jais.v10i1.12817

Abstract

CV Tirta Fertindo Pratama is an agribusiness company specializing in hydroponics in Semarang. The company manages hydroponic farms for various vegetables and fruits but faces challenges in manually measuring Potential of Hydrogen (pH), electrical conductivity (EC), and Total Dissolved Solids (TDS), which affect product quality. To address this issue, an Internet of Things (IoT)-based hydroponic plant monitoring system was developed using temperature, pH, and TDS sensors connected to an ESP32 microcontroller. This system enables remote automated measurement and control, displaying data via an LCD. The implementation of this IoT system enhances efficiency and consistency in plant management by enabling real-time monitoring and more precise control, reducing the risk of manual errors, and improving hydroponic crop production. Keywords - hydroponics; IoT; pH; EC; TDS; microcontroller
Adaptive Learning Model for Social Robots Using Visual and Proximity Sensors in Dynamic Educational Environments Tamamy, Aries Jehan; Pambudi, Arga Dwi; Arifin, Zaenal; Harsono, Budi
(JAIS) Journal of Applied Intelligent System Vol. 10 No. 1 (2025): April 2025
Publisher : LPPM Universitas Dian Nuswantoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62411/jais.v10i1.12997

Abstract

Social robots are increasingly being integrated into educational environments to support learning and engagement. However, most existing systems lack the adaptability required to respond appropriately to dynamic human behavior in real-time classroom settings. This paper presents an adaptive learning framework for social robots that utilizes visual and proximity sensor data to perceive human spatial context and adjust interaction strategies accordingly. A Deep Q-Network (DQN)-based reinforcement learning algorithm is employed to map environmental states to socially appropriate actions such as maintaining distance, initiating interaction, or retreating. The robot was trained in a simulated classroom environment consisting of dynamic student agents with randomized behaviors. Experimental results show that the robot achieved a cumulative reward improvement of over 500%, reduced its average distance error from 0.45 m to 0.18 m, and increased its interaction success rate from 50% to 88% over 100 training episodes. These results confirm the effectiveness of the proposed model in enabling real-time behavioral adaptation. The framework contributes to the development of context-aware, socially intelligent robotic systems capable of enhancing Human-Robot Interaction (HRI) in educational applications. Future work includes extending the model to incorporate emotional cues and real-world validation with physical robot platforms. Keywords - social robots, adaptive learning, reinforcement learning, human-robot interaction, sensor fusion, educational robotics
Co-Authors - Hwihanus - Wiendartun Abdul Kosim, Abdul Abdul Kudus, Wahid ABDUL MANAF Abdullah Merjani, Abdullah Abdur Rohim, Abdur Abrori, Muhammad Achmad Chalid Afif Achmad Fauzy, Achmad Achmad Gani Achmad Sobirin, Achmad Achmad Zainudin, Achmad Adi Pamungkas Adi Pratama, Adi Adi Saputra Adianti Paramita, Adianti Adithia P, Eka aditya surya hartanti Aditya Yoga Syah Putra Aflah, Muhammad Nur Afma, Vera Afriliani, Nita Afrio Rika. R Afthari Mudatsir T, Andi Ageftry, Farhan Dio Agung Kurniawan Agung Sudaryono AGUS AGUS Agus Bashori Agus Joko Prasetyo Agus Winarno, Agus Agus Wismanto Agustina Widodo Ahadiyah, Naeli Ni'matin Ahmad Suriadi, Ahmad Ahmad Tafsir, Ahmad Ahmad Zahro Ahmad, Andi Ahmad, Asep Ahyadi Ajat Rukajat Ajmal, Ajmal Al Jabbar, Ahmad Vicqieh Albayani, Melati Inayati Albayani, Melati Inyati Alfandi, Iqbal Alfani, Wahyu Ali Djunaedi Ali Imron Ali Ridlo Alvian Ideastari, Nukat Alzami, Farrikh Amik Krismawati Amri Panahatan Sihotang Angriawan, Angriawan Ani Kurniawati Anjarini, Titi Annisa Purbasari, Annisa Antari, Gladeva Yugi Aprilia, Elinda Apriliani, Alma ARDIANSYAH ARDIANSYAH Ardiantika, Fitri Nur Ardyantara, David Maharya Arga Dwi Pambudi Arief Slamet Karyadi Arif Hidayat Arif Mustofa Aritonang, Kristianto Ariyanti, Maelina Arman, Feti Artalopa, Ryan Ashari, Ayu Asmana, Arezqi Tunggal Asropah Asropah Asrori, Zainul Assariy, Annas Faiz Astria Liani, Tika Ayu Adriyuni Lestari Ayu, Saras Aziz Thohari, Afandi Nur Aziz, Bakhril Aziz, M. 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