Article Per Year (5 Year)
p-Index From 2020 - 2025
11.036
P-Index
This Author published in this journals
All Journal Cakrawala Pendidikan Medikora: Jurnal Ilmiah Kesehatan Olahraga Jurnal Pendidikan Jasmani, Olahraga dan Kesehatan Sains Olahraga : Jurnal Ilmiah Ilmu Keolahragaan AT TA´DIB Jurnal Obsesi: Jurnal Pendidikan Anak Usia Dini JURNAL PENDIDIKAN JASMANI DAN OLAHRAGA JOURNAL SPORT AREA Halaman Olahraga Nusantara : Jurnal Ilmu Keolahragaan JURNAL PENJAKORA Jurnal SPORTIF : Jurnal Penelitian Pembelajaran Journal on Education Jurnal Pendidikan Kesehatan Rekreasi Jurnal Review Pendidikan dan Pengajaran (JRPP) Jurnal Menssana Jurnal Sporta Saintika Jurnal Kejaora (Kesehatan Jasmani dan Olahraga) Riyadhoh : Jurnal Pendidikan Olahraga Jurnal Ilmiah Pendidikan Citra Bakti Community Development Journal: Jurnal Pengabdian Masyarakat jurnal ilmu keolahragaan Multilateral: Jurnal Pendidikan Jasmani Dan Olahraga Jurnal Patriot JURNAL PENDIDIKAN, SAINS DAN TEKNOLOGI Edu Sportivo: Indonesian Journal of Physical Education Jurnal Pendidikan Jasmani (JPJ) Journal Social Science And Technology For Community Service Indonesian Journal of Sport and Tourism Jurnal Pendidikan Jasmani, Olahraga dan Kesehatan Undiksha Jurnal Kajian Pembelajaran dan Keilmuan Sepakbola Jurnal Humaniora dan Ilmu Pendidikan Indonesian Research Journal on Education Journal on Research and Review of Educational Innovation Journal of Educational Innovation and Public Health JURNAL PENDIDIKAN OLAHRAGA Jurnal Pengabdian dan Pemberdayaan Masyarakat Indonesia Indonesian Journal of Education and Development Research The Eastasouth Journal of Learning and Educations Baileo: Jurnal Sosial Humaniora The Eastasouth Journal of Social Science and Humanities Marathon: Jurnal Pendidikan Jasmani Universitas Tanjungpura Jurnal Ilmiah Multidisiplin Journal of Social Sciences and Technology for Community Service
I Putu Agus Dharma Hita
Universitas Pendidikan Ganesha
Religion Aerospace Engineering Arts Humanities Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Dentistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Veterinary Other

Published : 92 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 92 Documents
Search

 3   4   5   6   7 
PERAN INTERNET OF THINGS (IOT) DALAM TRANSFORMASI PENDIDIKAN Andi Muh Akbar Saputra; Marlina Marlina; Mayasari Mayasari; Nurul Hikmah Hikmah; I Putu Agus Dharma Hita; Jepri Utomo; Teguh Arifianto
Jurnal Review Pendidikan dan Pengajaran Vol. 7 No. 2 (2024): Volume 7 No. 2 Tahun 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v7i2.27532

Abstract

Dalam era digital yang terus berkembang, Internet of Things (IoT) telah menjadi faktor kunci dalam transformasi berbagai bidang, termasuk pendidikan. Penelitian ini bertujuan untuk mengeksplorasi peran IoT dalam transformasi pendidikan melalui metode studi literatur. Dengan mengumpulkan dan menganalisis berbagai sumber daya yang relevan, penelitian ini mengidentifikasi temuan utama mengenai potensi IoT dalam mempersonalisasi pembelajaran, meningkatkan aksesibilitas materi pembelajaran, dan menciptakan pengalaman pembelajaran yang lebih interaktif. Namun, tantangan seperti privasi dan keamanan data, serta kesenjangan akses terhadap teknologi, juga diidentifikasi sebagai faktor yang perlu diperhatikan dalam implementasi IoT dalam konteks pendidikan. Dengan demikian, penelitian ini memberikan wawasan yang mendalam tentang potensi dan tantangan dalam pemanfaatan IoT untuk meningkatkan mutu pendidikan. Rekomendasi disarankan untuk meningkatkan pelatihan tenaga pendidik, memperkuat kebijakan privasi dan keamanan data, serta meningkatkan aksesibilitas teknologi bagi semua siswa.
Pengaruh Pemanfaatan Teknologi Augmented Reality terhadap Tingkat Ketertarikan Belajar Siswa dalam Penyampaian Materi Pembelajaran Uci Purnama Sari; Dina Mayadiana Suwarma; Desty Endrawati Subroto; Roswati Roswati; Jenuri Jenuri; I Putu Agus Dharma Hita
Journal on Education Vol 6 No 3 (2024): Volume 6 Nomor 3 Tahun 2024
Publisher : Departement of Mathematics Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joe.v6i3.5698

Abstract

This research aims to explore the influence of Augmented Reality (AR) technology utilization on students' level of learning interest in delivering learning materials. A literature review method was employed to gather and analyze relevant sources of data regarding the research topic. The research findings indicate that the use of AR technology in learning contributes positively to students' level of learning interest. AR provides an interactive, captivating learning experience that captures students' attention by presenting learning materials in visual and sensory formats. Moreover, AR also enhances students' learning motivation through enjoyable and satisfying learning experiences. These findings suggest that educators should actively integrate AR technology into learning to improve the quality and effectiveness of the teaching-learning process.
Power and Political Influence in Sports in Indonesia: A Literature Review I Putu Agus Dharma Hita; Doni Pranata; Elsa Ariestika
The Eastasouth Journal of Learning and Educations Vol. 2 No. 02 (2024): The Eastasouth Journal of Learning and Educations (ESLE)
Publisher : Eastasouth Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/esle.v2i02.249

Abstract

This research aims to analyze the power and political influence in sports in Indonesia. In this study, the author used a qualitative approach with data collection techniques through literature review. The results of the study showed that power and political influence greatly affect the development of sports in Indonesia, from the development of infrastructure, organization of sporting events, to the recruitment of athletes and coaches. Political influence also affects the integrity of sports, such as doping cases and cheating in competitions. In addition, power and political influence can have a negative impact on athletes and coaches, such as political intervention in technical decisions and the appointment of incompetent people as sports administrators. However, there have been several efforts made by the government and society to reduce the negative impact of power and political influence in sports, such as the formation of independent institutions and increasing awareness of sports integrity. Therefore, the conclusion of this study is that it is important to pay attention to the role and political influence in the development of sports in Indonesia, as well as taking appropriate steps to maintain integrity and minimize the negative impact of power and political influence in sports.
Media Kartu Bergambar untuk Anak Usia Dini: Apakah Memiliki Pengaruh terhadap Peningkatan Motivasi Belajar? Jasiah Jasiah; Mayasari Mayasari; Paulus Haniko; Eny Munisah; Ela Pebriani; Berta Apriza; I Putu Agus Dharma Hita
Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini Vol 7, No 6 (2023)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/obsesi.v7i6.5599

Abstract

Motivasi merupakan salah satu faktor utama dalam menunjang hasil belajar siswa. Penelitian ini bertujuan untuk menganalisis penerapan media pembelajaran kartu bergambar dalam meningkatkan motivasi belajar anak usia dini. Dalam metode studi literatur, kami menyelidiki literatur yang relevan dengan topik ini dan mengidentifikasi temuan-temuan kunci. Hasilnya mengungkapkan bahwa media pembelajaran kartu bergambar memiliki potensi besar dalam meningkatkan motivasi belajar anak usia dini. Desain yang menarik, unsur interaktif, dan keterlibatan anak merupakan faktor penting. Faktor individu dan variasi dalam penggunaan media juga berdampak signifikan. Kerjasama antara orang tua dan pendidik menjadi penting, serta perlu ada evaluasi dan pengembangan berkelanjutan. Hasil penelitian ini memberikan pemahaman yang lebih mendalam tentang cara meningkatkan motivasi belajar anak usia dini melalui media pembelajaran kartu bergambar.
Media Pembelajaran Berbasis Teknologi: Apakah Memiliki Pengaruh terhadap Peningkatan Kreativitas pada Anak Usia Dini? Adi Asmara; Loso Judijanto; I Putu Agus Dharma Hita; Kundharu Saddhono
Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini Vol 7, No 6 (2023)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/obsesi.v7i6.5728

Abstract

Penelitian ini bertujuan untuk mengeksplorasi pengaruh positif media pembelajaran berbasis teknologi terhadap peningkatan kreativitas anak usia dini. Metode penelitian menggunakan studi literatur dengan fokus pada analisis berbagai pendekatan pembelajaran berbasis teknologi yang telah diterapkan dalam pendidikan anak usia dini. Hasil penelitian menunjukkan kontribusi signifikan media pembelajaran berbasis teknologi dalam merangsang kreativitas anak melalui elemen visual, interaktivitas, dan keterlibatan personal. Implikasi penelitian ini adalah pentingnya pengembangan kurikulum yang mengintegrasikan teknologi dengan metode tradisional, serta peran guru dalam mendukung pemanfaatan media pembelajaran. Simpulan penelitian menyoroti bahwa penggunaan bijak media pembelajaran berbasis teknologi dapat membentuk fondasi kuat untuk perkembangan kreativitas anak usia dini.
Analisis Pengaruh Permainan Bola Basket Dalam Mengurangi Berat Badan Berlebih I Putu Agus Dharma Hita; Doni Pranata; Elsa Ariestika
Journal of Educational Innovation and Public Health Vol. 2 No. 2 (2024): April : Journal of Educational Innovation and Public Health
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/innovation.v2i2.2854

Abstract

This research investigates the influence of basketball game in reducing excess weight among children and adolescents through a literature review approach. By conducting an in-depth review of relevant literature, this study identifies the physical, psychological, and social benefits of basketball game in the context of weight management. The results of the analysis indicate that basketball game offers significant potential as one of the effective strategies in addressing obesity, by providing intensive physical activity, enhancing psychological well-being, and promoting teamwork and positive social relationships. However, challenges still exist in promoting participation in this game, particularly related to accessibility and support of adequate sports facilities. Therefore, collaborative efforts from various parties are needed to create an environment that supports and facilitates participation in basketball game as part of a sustainable active lifestyle.
Analysis of the Implications of Organizing Sports on Economic Growth (A Literature Review) Doni Pranata; I Putu Agus Dharma Hita; Elsa Ariestika; Witri Suwanto
Jurnal Pendidikan Jasmani (JPJ) Vol 4 No 2 (2023): Jurnal Pendidikan Jasmani (JPJ)
Publisher : Sekolah Tinggi Olahraga dan Kesehatan Bina Guna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55081/jpj.v4i2.1104

Abstract

Economic development is a series of activities carried out in a systematic and structured manner in the economic sector which causes the goods and services produced in society to increase and increase for the community. In the current era, economic growth is marked as an indicator for achieving the success of the development of a region. The purpose of this study is to see how the influence and impact of the sports sector to improve economic development on a micro and macro basis. The type of research adapted is library research or more commonly known as library research, using descriptive analysis of research. The data analyzed is data that comes from previous studies to be analyzed and described so that conclusions can be drawn. The data collection method used is literature study research consisting of various sources including primary and secondary sources. The results obtained from the research are that there are implications of organizing sports on economic growth for actors and the community around the place where sports are held. society so as to create economic growth.
Pandangan filsafat terhadap ilmu pedagogi olahraga Hita, I Putu Agus Dharma
Edu Sportivo: Indonesian Journal of Physical Education Vol. 1 No. 2 (2020): Edu Sportivo: Indonesian Journal of Physical Education
Publisher : UIR Press Bekerjasama dengan International Association of Physical Education and Sports

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/es:ijope.2020.vol1(2).5671

Abstract

Pedagogy for a teacher is very important because by mastering the pedagogy of the learning process carried out will get maximum results and in accordance with the objectives of carrying out the learning. This study aims to determine what factors a teacher should have so that in a learning process the teacher is able to create a good learning, appropriate teaching strategies and styles, as well as maximum knowledge and experience. The method used in this research is to use the literature study method, namely the data is collected using the literature study method. The data will be compiled, analyzed, and concluded to get a conclusion. Education in sports should be given to children from an early age such as formal education in schools. In the educational process, it cannot be separated from the role of a teacher in the classroom. The teacher's role is an application of pedagogy. Pedagogy of sports is a discipline of sports science that has the potential to integrate sub-disciplines of sports science to be able to underlie all practices in the field of sports that have the aim and purpose of being able to educate. Teachers must be able to have broad theoretical knowledge, apply in the classroom in using appropriate methods, and be able to manage the class so that the learning process can run well and achieve maximum results. Because, if the teacher only masters theories without the ability to manage the classroom using appropriate learning methods, the expectation of the desired results will not be achieved. So between theoretical knowledge and application of methods must be balanced in the learning process. All methods, media, references, and so on will be meaningless if a teacher is not able to perform their duties properly.
Metode latihan resiprokal: Apakah berpengaruh terhadap ketepatan shooting? Ariestika, Elsa; Pranata, Doni; Alamsyah, Nur Fadly; Hita, I Putu Agus Dharma
Sepakbola Vol 3, No 2 (2023)
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/sepakbola.v3i2.281

Abstract

Teknik shooting baik dalam permainan sepakbola memerlukan kemampuan memperkirakan jarak dan arah bola yang harus dihantarkan. Dalam kajian penelitian ini melakukan penerapan metode latihan resiprokal terhadap ketepatan shooting. Tujuan penelitian ini untuk mengetahui pengaruh metode latihan resiprokal terhadap ketepatan shooting. Jenis penelitian ini adalah deskriptif kuantitatif dengan metode eksperimen semu. Instrumen pengambilan data pada penelitian ini menggunakan tes ketepatan shooting. Populasi dalam penelitian ini adalah UKM Sepakbola Universitas Primagraha sebanyak 25 atlet dan teknik sampel menggunakan total sampling sehingga sampel yang digunakan sebanyak 25 orang yang mengikuti UKM Sepakbola Universitas Primagraha. Teknik analisis data pada penelitian ini menggunakan uji prasyarat yag terdiri dari uji normalitas dan uji homogenitas, kemudian dilakukan uji hipotesis dengan teknik uji paired sample t test. Hasil penelitian menunjukkan bahwa terdapat pengaruh yang signifikan metode latihan resiprokal terhadap ketepatan shooting UKM Sepakbola Universitas Primagraha dengan nilai sig 0,000 < 0,05 dengan peningkatan sebesar 83%. Berdasarkan hasil penelitian dapat disimpulkan bahwa penerapan latihan shooting dengan metode resiprokal terhadap ketepatan shooting terdapat peningkatan dan berpengaruh untuk UKM Sepakbola Universitas Primagraha. Reciprocal training method: Does it affect the shooting accuracy? Abstract: Good shooting technique in the game of football requires the ability to estimate the distance and direction of the ball that must be delivered. In this research study, the reciprocal training method was applied to shooting accuracy. The aim of this research was to determine the effect of the reciprocal training method on shooting accuracy. This type of research is quantitative descriptive with a quasi-experimental method. The data collection instrument in this study used a shooting accuracy test. The population in this study was the Primagraha University Football UKM, consisting of 25 athletes and the sampling technique used total sampling so that the sample used was 25 people who took part in the Primagraha University Football UKM. The data analysis technique in this research uses a prerequisite test consisting of a normality test and a homogeneity test, then a hypothesis test is carried out using the paired sample t-test technique. The results of the research show that there is a significant influence of the reciprocal training method on the shooting accuracy of the Primagraha University Football UKM with a sig value of 0.000 < 0.05 with an increase of 83%. Based on the research results, it can be concluded that the application of shooting training using the reciprocal method on shooting accuracy has increased and has an effect on the Primagraha University Football UKM.
Investigation of nutritional status, VO2max, agility, speed, and strength: A cross-sectional study in basketball athletes Hudain, Muh Adnan; Kamaruddin, Ilham; Hita, I Putu Agus Dharma; Pranata, Doni; Ariestika, Elsa
Journal Sport Area Vol 8 No 2 (2023): August
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/sportarea.2023.vol8(2).11724

Abstract

Nutritional status, VO2max, agility, speed, and strength are very important factors for every athlete to achieve maximum performance, especially in basketball. This study aims to determine the level of nutritional status, VO2max, agility, speed, and strength of Jembrana Regency basketball athletes in Preparation for the 2022 Bali Provincial Sports Week Championship. The sample in this study consisted of 12 men’s basketball athletes, Porprov Jembrana Regency, using the total sampling technique. The type of research used in this research was a cross-sectional study. The instruments used to collect data in this study were the Body Mass Index to measure nutritional status, the Multistage Fitness Test to measure VO2max, the Illinois Agility Test to measure agility, the 30M Sprint Test to measure speed, and the Push Up & Sit Up Test to measure muscle strength; belly and arms. The study found that the average nutritional status was normal, VO2max was good, agility was good, speed was very poor, arm muscle strength was good, and abdominal muscle strength was very good. The results of the study could assist Jembrana Regency get a good idea of how the athletes are training and how well the staff and teachers are working together. This is important for getting the best results at the Bali Provincial Sports Week championship. Based on the study's results, the best way to get ready for the Bali Provincial Sports Week championship is for players to get in better shape, especially in terms of biomotor VO2max and speed, which are still not good enough. So, more study can be done to re-evaluate these biomotors and add more physical test markers so that players’ physical success can be tracked as well as possible.
Co-Authors - Jenuri, - Abd Halim Ade Hermawansyah Aditya Rhido Fatmawan Aditya Ridho Fatmawan Ady Bakri, Asri Agus Susworo Dwi Marhaendro Ahmad Qurtubi Akhmad Haqiqi Ma'mun Akhmad Haqiqi Mamun Alamsyah, Nur Fadly Albertus Hengka Nove Almira Ulimaz Anak Agung Ngurah Putra Laksana Andi Muh Akbar Saputra Andriya Risdwiyanto Anggo Widcaksana Ilmawan Anggoro Dwi Cahyo Anita Ninasari Anto Sukamto Archristhea Amahoru Arianta, I Kadek Nosa Ariestika, Elsa Arjang Arjang Artanayasa, Wayan Asmara, Adi Astuti, Ni Made Ignityas Prima Ayyesha Dara Fayola Bagus Kuncoro Baso Intang Sappaile Bernadeta M Wara Kushartanti Berta Apriza Betrix Teofa Perkasa Wibafied Billy Yachsie Brian Sebastian Salim Bujangga, Ni Wayan Ayu Alvina Pebriani Cindrawan, Putu Arya Gita Dahlan Abdullah Damayanti, Ni Kadek Novi Daniel Oktodeli Sihombing Darmawanta Sembiring Darmayanti, Kadek Kristina Dwi Desty Endrawati Subroto Dhety Chusumastuti Dindin Abidin Dodo Murtado Doni Pranata Doni Pranata Doni Pranata Eka Melati Ela Pebriani Elsa Ariestika Elsa Ariestika Elsa Ariestika Elsa Ariestika Elsa Ariestika Emy Yunita Rahma Pratiwi Eny Munisah Eskawida Eskawida Faiz Abdu Salam Fatimah Malini Lubis Fatmawati Sabur Filbert Ivander Fitriah Handayani FX Sugiyanto Gamar Al Haddar Gatot Wijayanto Geofakta Razali Haryanto, Sri Hasmirati Hasmirati Heri Dermawan Heri Dermawan Hudain, Muh. Adnan I Kadek Juni Arta Negara I Ketut Addy Putra Indrawan I Ketut Addy Putra Indrawan I Ketut Addy Putra Indrawan I Ketut Yoda I Putu Eri Kresnayadi I Putu Herry Widhi Andika Ida Ayu Kade Arisanthi Dewi Ihsan, Dimas Nazarul Ilmawan, Anggo Widcaksana Indah Merakati Indrawan, I Ketut Addy Putra Irwan Febryan Isyarotullatifah Isyarotullatifah Isyarotullatifah Jasiah Jasiah Jasiah Jayanti, Ni Putu Sinta Putri Juliansyah, Muhammad Akbar Junianto, Pilifus Kadek Lina Kurniawati Kadek Lina Kurniawati Kamaruddin, Ilham Komang Ayu Krisna Dewi Krisna, I Made Ananda Kundharu Saddhono Kurniawati, Kadek Lina Laili Savitri Noor Laratmase, Antonia Junianty Lestari, Nyoman Putri Loso Judijanto M. Daud Yahya M.Or S.Pd I Ketut Budaya Astra . Made Agus Wijaya Made Sri Astika Dewi . Mahotama, Ida Bagus Gede Jaya Margiyono Suyitno Marlina Marlina MAURITZ PANDAPOTAN MARPAUNG Mayadiana Suwarma, Dina Mayasari Mayasari Mayasari Mayasari Misbahul Munir Muahamad Efendi Mubin, Nurul Muhammad Akbar Muhammad Akbar Juliansyah Muhammad Akbar Juliansyah Muhammad Akbar Juliansyah Mustapa Mustapa Nanda, Fitri Agung Ni Gusti Ayu Lia Rusmayani Ni Gusti Ayu Lia Rusmayani Ni Gusti Ayu Lia Rusmayani Ni Made Ignityas Prima Astuti Ni Made Ignityas Prima Astuti Ni Putu Artila Dewi Nugroho Susanto Nur Fadly Alamsyah Nursyamsi SY Nurul Hikmah Hikmah Nurzaima Nurzaima Nyoman Ayu Putri Lestari Pambayu, Septadi Hanif Pande Putu Miko Kesya Pratama Paulus Haniko Perdana, I Putu Agus Arwi Putra, Kadek Denis Adi Putri, Alifia Ramadhina Putri, Melati Naila Putri, Ni Ketut Karina Santika Putri, Ni Komang Yeni Mahendra Raka Ismaya Ratna Ayu Dewi Ratna Novita Punggeti RD. D. Lokita Pramesti Dewi Rena Fadilah Malik Rendra Agung Prabowo Retno Farhana Nurulita Reza Resah Pratama Rina Setyaningsih Rizki Hazazi Ali Romadina Permatasari Roswati Roswati Rukiyanto Rukiyanto, Rukiyanto S.Ked. dr. Ni Made Sri Dewi Lestari . Saidatul Karimah Salam, Faiz Abdu Salas, Made Andre Marcelo Saputra, I Putu Surya Dwipayana Arta Satria Armanjaya Septadi Hanif Pambayu Septadi Hanif Pambayu Setiawan, Benediktus Ivan Setyaningsih , Agustina Siska Siska Siti Nuridah Siti Patimah Solissa, Everhard Markiano Sri Hardianty Sumaryanto Sumaryanto Syafa'at Ariful Huda Syam, Robingun Suyud The Teguh Arifianto Tri Bigrit Cleveresty Triani Patra Pertiwi Trisnawati, Teti Uci Purnama Sari Utomo, Jepri Valentri, Avi Weraman, Pius Widiyanto Widiyanto Widyananta, I Putu Andra Witri Suwanto Witri Suwanto Yoga, I Komang Indra Agastya Ananta Yudik Prasetyo Zamzami Zamzami Zhafir, Akmal Zuhad Ahmad