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All Journal REKA GEOMATIKA Journal of Mathematical and Fundamental Sciences JIIP (Jurnal Ilmiah Ilmu Pendidikan) Jurnal Ilmiah Wahana Pendidikan Educenter: Jurnal Ilmiah Pendidikan JOTTER Jurnal Dirosah Islamiyah EDUCENTER JURNAL PENDIDIKAN Indonesian Journal of Islamic Studies Edumaspul: Jurnal Pendidikan
UMAR ROSADI
Universitas Islam Nusantara
Religion Humanities Astronomy Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Health Professions Mathematics Physics Social Sciences Other

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Penerapan Model Deformasi Horizontal Mogi untuk Prediksi Perubahan Volume Sumber Tekanan pada Gunungapi Guntur SETYA, APRIS; C. PERBANI, N. M. R. RATIH; ROSADI, UMAR
REKA GEOMATIKA Vol 1, No 2 (2013)
Publisher : Institut Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrg.v1i2.349

Abstract

ABSTRAK Gunungapi Guntur merupakan gunungapi aktif yang memiliki potensi bencana letusan yang berulang, maka aktivitasnya perlu diamati secara kontinu. Informasi lokasi dan perubahan volume sumber tekanan sangat bermanfaat dalam pemantauan aktivitas gunungapi. Model Mogi [Mogi, 1958] dapat digunakan dalam penentuan perubahan volume sumber tekanan. Penelitian ini ditujukan untuk menentukan parameter-parameter Model Mogi berupa jarak radial antara titik pantau terhadap sumber tekanan, kedalaman sumber tekanan menggunakan gridding, dan perubahan volume sumber tekanan menggunakan teknik kuadrat terkecil. Kedalaman sumber tekanan ditentukan dalam rentang 5 sampai dengan 10 km dengan interval 1 km. Parameter jarak radial sumber tekanan terhadap titik-titik pantau diambil dari Kawah Masigit terhadap tiga titik pantau (Citiis (CTSG), Masigit (Msgt) dan Sodong (SODN)) periode Februari 2012 s.d April 2013. Teknik kuadrat terkecil diterapkan untuk penentuan parameter perubahan volume sumber tekanan. Hasil deformasi horizontal Model Mogi diuji kemiripannya dengan hasil pengukuran menggunakan goodness of fit χ2. Berdasarkan hasil pengujian didapatkan nilai best fit pada kisaran kedalaman 5 km. Pola perubahan volume pada umumnya bersifat periodik, dengan periode antara dua setengah sampai dengan tiga bulan dengan nilai fluktuasi yang beragam. Kata kunci: Model Mogi, gridding, kuadrat terkecil, goodness of fit χ2 ABSTRACT Mount Guntur is vulcano active and has the potential disaster eruption could happen then activity Guntur vulcano need observed continuously. Information about the location and volume changes source pressure will be very beneficial in monitoring activities Guntur vulcano. Model mogi [ mogi, 1958] is one model that can be used in the determination volume changes source pressure. Least square adjustment worn to solving parameters volume changes source pressure, while parameters depth source pressure using methods gridding in range depth 5 s.d 10 km by intervals 1 km and parameters distance radial source pressure upon observation points taken from Masigit crater. With the data deformation toward the horizontal on observation points citiis ( ctsg ), masigit ( msgt), and sodong ( sodn ) period february 2012 - april 2013. Deformation horizontal results model mogi will be done testing similarities data with deformation horizontal result of measurement GPS using goodness of fit χ2 method. Result goodness of fit χ2 method produce the best value lies in the depth around 5km Pattern of volume changes in general be periodic, with a period between two a half to three months  with a variety of value fluctuations. Keywords: Guntur Vulcano, Least Square Adjusment Mogi Models, volume changes source pressure
Estimasi Kedalaman Pusat Tekanan dan Volume Magma dari Hasil Perbandingan Nilai Maksimum Deformasi Horizontal dan Vertikal Hasil Pengamatan GPS Real-Time Kontinu KURNIA, HARRI DWI; C. PERBANI, N. M. R. RATIH; ROSADI, UMAR
REKA GEOMATIKA Vol 1, No 2 (2013)
Publisher : Institut Teknologi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrg.v1i2.350

Abstract

ABSTRAK Gunungapi Sinabung yang terletak di Kabupaten Karo, Provinsi Sumatera Utara terakhir meletus pada tahun 2010 sehingga perlu dilakukan pemantauan deformasi sebagai  antisipasi terhadap bahaya letusan. Model Mogi menggunakan perbandingan dari deformasi horizontal dan vertikal untuk mengestimasi kedalaman pusat tekanan untuk selanjutnya mengestimasi volume material dapur magma. Tujuan dari penelitian ini adalah untuk mengestimasi kedalaman pusat tekanan dan volume material dapur magma Gunungapi Sinabung dengan menggunakan perbandingan nilai maksimum dari jarak horizontal, deformasi horizontal, dan deformasi vertikal. Pemantauan yang dilakukan dengan pengamatan GPS real time kontinu pada titik tiga pantau, yaitu Gurukinayan (GRKI); Lawukawar (LWKR); dan Sukanalu (SKNL). Deformasi horizontal dan vertikal yang digunakan adalah yang memiliki nilai kurang dari 0,5 meter. Hasil dari nilai maksimum deformasi horizontal adalah 0,410 meter; nilai maksimum deformasi vertikal adalah 0,326 meter; dan nilai maksimum dari jarak horizontal adalah 9.446,963 meter. Dari hasil perhitungan tersebut didapatkan nilai kedalaman pusat tekanan estimasi adalah 11.358,887 m ≈ 11,4 km dengan simpangan baku ± 412,925 m ≈ ± 0,4 km dari puncak kawah Gunungapi Sinabung dan hasil volume magma estimasi Gunungapi Sinabung adalah 266.155.980,655 m3 dengan simpangan baku ± 6.574.227,425 m3. Kata kunci: Model Mogi, nilai maksimum, kedalaman pusat tekanan estimasi, volume magma estimasi ABSTRACT Mount Sinabung located at Karo Regency, North Sumatra last erupted at 2010 therefor need to be conducted a deformation monitoring as an anticipation of an eruption hazard. Mogi Model uses the comparison of horizontal deformation and vertical deformation to estimate the depth of pressure source for henceforth estimate the volume of magma chamber. The propose of this research is for estimate depth of pressure source and volume of magma chamber of Mount Sinabung using the comparison of horizontal distance; horizontal deformation;  and vertical deformation. These monitoring is conducted with real-time continue GPS observation on the three of monitoring point, there is Gurkinayan (GRKI), Lawukawar (LWKR); dan Sukanalu (SKNL). Horizontal and vertical deformation were used which has the value less than 0.5 meter. The result from the average of maximum value of horizontal deformation is 0.410 meter; average of maximum value of  vertical deformation is 0.326 meter; average of maximum value of  horizontal distance is 9,446.963 meters. From the result of those calculating is obtained the estimation value of the pressure source depth is 11,358.887 m ≈ 11,4 km with standart deviation is ± 412.925 m ≈ ± 0.4 km from the crater peak of Mount Sinabung and magma volume estimation of Mount Sinabung is 266,155,980.655 m3 with standart deviation is ± 6,574,227.425 m3 Keywords: Mogi Model, maximum value, depth of pressure source, magma volume
Penerapan Model Deformasi Horizontal Mogi untuk Prediksi Perubahan Volume Sumber Tekanan pada Gunungapi Guntur APRIS SETYA; N. M. R. RATIH C. PERBANI; UMAR ROSADI
REKA GEOMATIKA Vol 1, No 2 (2013)
Publisher : Institut Teknologi Nasional

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

Abstract

ABSTRAK Gunungapi Guntur merupakan gunungapi aktif yang memiliki potensi bencana letusan yang berulang, maka aktivitasnya perlu diamati secara kontinu. Informasi lokasi dan perubahan volume sumber tekanan sangat bermanfaat dalam pemantauan aktivitas gunungapi. Model Mogi [Mogi, 1958] dapat digunakan dalam penentuan perubahan volume sumber tekanan. Penelitian ini ditujukan untuk menentukan parameter-parameter Model Mogi berupa jarak radial antara titik pantau terhadap sumber tekanan, kedalaman sumber tekanan menggunakan gridding, dan perubahan volume sumber tekanan menggunakan teknik kuadrat terkecil. Kedalaman sumber tekanan ditentukan dalam rentang 5 sampai dengan 10 km dengan interval 1 km. Parameter jarak radial sumber tekanan terhadap titik-titik pantau diambil dari Kawah Masigit terhadap tiga titik pantau (Citiis (CTSG), Masigit (Msgt) dan Sodong (SODN)) periode Februari 2012 s.d April 2013. Teknik kuadrat terkecil diterapkan untuk penentuan parameter perubahan volume sumber tekanan. Hasil deformasi horizontal Model Mogi diuji kemiripannya dengan hasil pengukuran menggunakan goodness of fit χ2. Berdasarkan hasil pengujian didapatkan nilai best fit pada kisaran kedalaman 5 km. Pola perubahan volume pada umumnya bersifat periodik, dengan periode antara dua setengah sampai dengan tiga bulan dengan nilai fluktuasi yang beragam. Kata kunci: Model Mogi, gridding, kuadrat terkecil, goodness of fit χ2 ABSTRACT Mount Guntur is vulcano active and has the potential disaster eruption could happen then activity Guntur vulcano need observed continuously. Information about the location and volume changes source pressure will be very beneficial in monitoring activities Guntur vulcano. Model mogi [ mogi, 1958] is one model that can be used in the determination volume changes source pressure. Least square adjustment worn to solving parameters volume changes source pressure, while parameters depth source pressure using methods gridding in range depth 5 s.d 10 km by intervals 1 km and parameters distance radial source pressure upon observation points taken from Masigit crater. With the data deformation toward the horizontal on observation points citiis ( ctsg ), masigit ( msgt), and sodong ( sodn ) period february 2012 - april 2013. Deformation horizontal results model mogi will be done testing similarities data with deformation horizontal result of measurement GPS using goodness of fit χ2 method. Result goodness of fit χ2 method produce the best value lies in the depth around 5km Pattern of volume changes in general be periodic, with a period between two a half to three months  with a variety of value fluctuations. Keywords: Guntur Vulcano, Least Square Adjusment Mogi Models, volume changes source pressure
Estimasi Kedalaman Pusat Tekanan dan Volume Magma dari Hasil Perbandingan Nilai Maksimum Deformasi Horizontal dan Vertikal Hasil Pengamatan GPS Real-Time Kontinu HARRI DWI KURNIA; N. M. R. RATIH C. PERBANI; UMAR ROSADI
REKA GEOMATIKA Vol 1, No 2 (2013)
Publisher : Institut Teknologi Nasional

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

Abstract

ABSTRAK Gunungapi Sinabung yang terletak di Kabupaten Karo, Provinsi Sumatera Utara terakhir meletus pada tahun 2010 sehingga perlu dilakukan pemantauan deformasi sebagai  antisipasi terhadap bahaya letusan. Model Mogi menggunakan perbandingan dari deformasi horizontal dan vertikal untuk mengestimasi kedalaman pusat tekanan untuk selanjutnya mengestimasi volume material dapur magma. Tujuan dari penelitian ini adalah untuk mengestimasi kedalaman pusat tekanan dan volume material dapur magma Gunungapi Sinabung dengan menggunakan perbandingan nilai maksimum dari jarak horizontal, deformasi horizontal, dan deformasi vertikal. Pemantauan yang dilakukan dengan pengamatan GPS real time kontinu pada titik tiga pantau, yaitu Gurukinayan (GRKI); Lawukawar (LWKR); dan Sukanalu (SKNL). Deformasi horizontal dan vertikal yang digunakan adalah yang memiliki nilai kurang dari 0,5 meter. Hasil dari nilai maksimum deformasi horizontal adalah 0,410 meter; nilai maksimum deformasi vertikal adalah 0,326 meter; dan nilai maksimum dari jarak horizontal adalah 9.446,963 meter. Dari hasil perhitungan tersebut didapatkan nilai kedalaman pusat tekanan estimasi adalah 11.358,887 m ≈ 11,4 km dengan simpangan baku ± 412,925 m ≈ ± 0,4 km dari puncak kawah Gunungapi Sinabung dan hasil volume magma estimasi Gunungapi Sinabung adalah 266.155.980,655 m3 dengan simpangan baku ± 6.574.227,425 m3. Kata kunci: Model Mogi, nilai maksimum, kedalaman pusat tekanan estimasi, volume magma estimasi ABSTRACT Mount Sinabung located at Karo Regency, North Sumatra last erupted at 2010 therefor need to be conducted a deformation monitoring as an anticipation of an eruption hazard. Mogi Model uses the comparison of horizontal deformation and vertical deformation to estimate the depth of pressure source for henceforth estimate the volume of magma chamber. The propose of this research is for estimate depth of pressure source and volume of magma chamber of Mount Sinabung using the comparison of horizontal distance; horizontal deformation;  and vertical deformation. These monitoring is conducted with real-time continue GPS observation on the three of monitoring point, there is Gurkinayan (GRKI), Lawukawar (LWKR); dan Sukanalu (SKNL). Horizontal and vertical deformation were used which has the value less than 0.5 meter. The result from the average of maximum value of horizontal deformation is 0.410 meter; average of maximum value of  vertical deformation is 0.326 meter; average of maximum value of  horizontal distance is 9,446.963 meters. From the result of those calculating is obtained the estimation value of the pressure source depth is 11,358.887 m ≈ 11,4 km with standart deviation is ± 412.925 m ≈ ± 0.4 km from the crater peak of Mount Sinabung and magma volume estimation of Mount Sinabung is 266,155,980.655 m3 with standart deviation is ± 6,574,227.425 m3 Keywords: Mogi Model, maximum value, depth of pressure source, magma volume
Karakteristik Deformasi Gunungapi Ijen dalam Periode 2002-2005 Hasil Estimasi Metode Survei GPS Hasanuddin Z. Abidin; Muhammad Hendrasto; Heri Andreas; Muhammad Gamal; Mipi A. Kusuma; Umar Rosadi; Iyan Mulyana; Dedi Mulyadi; Ony K. Suganda; Bambang H. Purwanto; Fumiaki Kimata
Journal of Mathematical and Fundamental Sciences Vol. 39 No. 1-2 (2007)
Publisher : Institute for Research and Community Services (LPPM) ITB

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

Abstract

Pemantauan aktivitas gunungapi dapat dilakukan dengan berbagai metode, dimana salah satunya adalah metode deformasi. Metode ini dapat diimplementasikan menggunakan beragam sensor dan teknik, dimana salah satunya adalah teknik yang menggunakan pengamatan terhadap satelit GPS (Global Positioning System). Makalah ini menjelaskan penggunaan metode survei GPS secara periodik untuk studi deformasi Gunungapi Ijen, gunungapi aktif tipe-A yang terletak di Jawa Timur. Dari hasil survei GPS yang telah dilaksanakan pada Juni 2002, April 2004, Juni 2004 dan Agustus 2005 teramati bahwa pada saat aktivitas gunung Ijen meningkat, pergeseran titik-titik pengamatan dapat mencapai sekitar 1-2 dm, baik dalam komponen horisontal maupun vertikal. Deformasi dalam level ini belum disertai dengan aktivitas letusan dari gunung Ijen.
Peran Kepemimpinan Kepala Sekolah dalam Meningkatkan Etos Kerja Guru PAI di Sekolah Agung Agung; Muhammad Aditya Firdaus; Umar Rosadi
Jurnal Ilmiah Wahana Pendidikan Vol 7 No 4 (2021): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.435 KB) | DOI: 10.5281/zenodo.5159173

Abstract

This study focuses on the declining work ethic of PAI teachers, indicated by the performance of teachers in improving teaching and learning activities that is still low, less concerned about duties and responsibilities, weak dedication and loyalty in carrying out tasks and weak responsiveness when curriculum changes occur. The research approach used is a qualitative approach with a descriptive method. Data collection techniques using interview observations and documentation studies. The results of this study are 1) the principal acts as an Educator; manager; administrator; supervisors; leaders; innovator; motivator. 2) There are at least three strategies used, namely hierarchical strategies, transformational strategies, and facilitative strategies. In realizing this strategy, the principal equalizes the rights and obligations of each teacher, provides information according to the needs of each teacher and according to their capacity, provides discussion space for teachers to solve each problem.
Internalisasi Akhlak (Studi Kasus di Pondok Pesantren Margasari Cijawura Kota Bandung) Umar Rosadi; Sandi Muhamad Permana
JIIP - Jurnal Ilmiah Ilmu Pendidikan Vol. 6 No. 11 (2023): JIIP (Jurnal Ilmiah Ilmu Pendidikan)
Publisher : STKIP Yapis Dompu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54371/jiip.v6i11.3138

Abstract

Tujuan dalam penelitian ini adalah mengidentifikasi dan mendiskripsikan metode pembelajaran akhlak yang dilakukan Pondok Pesantren Margasari Cijawura. Pendekatan yang digunakan adalah kualitatif dengan metode studi kasus. Pengumpulan data dilakukan dengan studi dokumentasi, wawancara, dan observasi. Instrumen pengumpulan data yang digunakan berupa daftar pertanyaan, rekaman audio, kamera foto. Sumber data terdiri dari Kyai, ustad, santri, orang tua santri dan sumber lain yang mendukung. Data yang diperoleh dalam penelitian ini adalah proses internalisasi akhlak yang dilakukan pondok pesantren Margasari Cijawura melalui berbagai metode meliputi peneladanan, penegakan aturan, pemotivasian, pembiasaan, Pepujian, wiridan. Dampak dari kegiatan pembelajaran akhlak yakni adanya perubahan yang positif walaupun belum optimal seperti yang diharapkan karena materi, metode dan teknik pembelajaran akhlak yang dilakukan oleh Ustad Pondok Pesantren Margasari Cijawura masih mengikuti tradisi pondok pesantren. Untuk mencapai pembelajaran yang efektif dan efisien, direkomendasikan agar kyai, ustad dalam pembelajaran harus mempertimbangkan teori-teori pendidikan.
Implementation of the golden age islamic boarding school program in improving the quality of life of elderly students at the Daarut Tauhiid Islamic Boarding School Habibah, Nafahatul; Alawiyah, Mudrikah Romdona; Faujiah, Risnawati Sarifah; Muhyiddin, Afif Muhammad; Rosadi, Umar
Educenter : Jurnal Ilmiah Pendidikan Vol. 3 No. 1 (2024): Educenter: Jurnal Ilmiah Pendidikan
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/educenter.v3i1.1252

Abstract

The Golden Age Program is a program that aims to foster Muslims and Muslim women at the golden age to have a straight creed, correct worship and noble character. In accordance with its title, "IMPLEMENTATION", this study aims to determine the planning of the Golden Age Program, obtain data on the implementation of the Golden Age Program program, and find out the evaluation process of the Golden Age Program at Daaarut Tauhid Islamic Boarding School. This research methodology uses a qualitative approach with data collection techniques in the form of in-depth interviews, participatory observation, and document analysis. The results of this study explain that the Golden Age Program planning is packaged in the form of training with an Andragogy approach. Consists of setting goals and objectives, program background, curriculum development, education calendar preparation, resource procurement. Then the implementation of the Service Period Program there are activities and activities that will be carried out by elderly students such as registration, testing, orientation period, teaching and learning activities, monitoring and mentoring, evaluation and graduation. Furthermore, the evaluation of the Elderly Period Program is carried out by means of analysis and assessment, collection of feedback, preparation of reports, recommendations and planning for the future.
The effect of learning implementation of kitab Akhlak lil Banin on the religious character Imandita, Anisa Nur; Julehah, Julehah; Apriyani, Lena; Apriliani, Salsa; Rosadi, Umar
Educenter : Jurnal Ilmiah Pendidikan Vol. 3 No. 2 (2024): Educenter: Jurnal Ilmiah Pendidikan
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/educenter.v3i2.1259

Abstract

The purpose of this study was to determine the effect of learning the book of Akhlaq lil banin volume II on the religious character of class VIII students of MTs Nurul Iman. The approach used in this study is a quantitative approach. This research was conducted at MTs Nurul Iman Bandung. The dominant subjects in this study were class VIII students who studied the book of Akhlaq lil banin volume II, however, to obtain accurate data, discussions with other subjects such as teachers, especially subject teachers, were also needed. The population was 55 students and the research sample was obtained using random sampling techniques. Data were collected through interview, observation methods and questionnaire. Data analysis was carried out using quantitative descriptive analysis and inferential statistical analysis. The results of this study indicate that the implementation of learning the book of akhlaq lil banin volume II has a significant influence on students' religious character. It can be concluded that the more often students learn about the book of akhlaq lil banin volume II, the more it will improve students' religious character.
Implementation of the golden age islamic boarding school program in improving the quality of life of elderly students at the Daarut Tauhiid Islamic Boarding School Habibah, Nafahatul; Alawiyah, Mudrikah Romdona; Faujiah, Risnawati Sarifah; Muhyiddin, Afif Muhammad; Rosadi, Umar
Educenter : Jurnal Ilmiah Pendidikan Vol. 3 No. 1 (2024): Educenter: Jurnal Ilmiah Pendidikan
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/educenter.v3i1.1252

Abstract

The Golden Age Program is a program that aims to foster Muslims and Muslim women at the golden age to have a straight creed, correct worship and noble character. In accordance with its title, "IMPLEMENTATION", this study aims to determine the planning of the Golden Age Program, obtain data on the implementation of the Golden Age Program program, and find out the evaluation process of the Golden Age Program at Daaarut Tauhid Islamic Boarding School. This research methodology uses a qualitative approach with data collection techniques in the form of in-depth interviews, participatory observation, and document analysis. The results of this study explain that the Golden Age Program planning is packaged in the form of training with an Andragogy approach. Consists of setting goals and objectives, program background, curriculum development, education calendar preparation, resource procurement. Then the implementation of the Service Period Program there are activities and activities that will be carried out by elderly students such as registration, testing, orientation period, teaching and learning activities, monitoring and mentoring, evaluation and graduation. Furthermore, the evaluation of the Elderly Period Program is carried out by means of analysis and assessment, collection of feedback, preparation of reports, recommendations and planning for the future.
Co-Authors Agung Agung Aji Setiaji Alawiyah, Mudrikah Romdona Alhinja Algifari Nugraha Andri Marta Sudirja Apriliani, Salsa APRIS SETYA APRIS SETYA Apriyani, Lena Asep Ahmad Ridwansyah Bambang H. Purwanto Chepy Risnadar Angga Widjaya Daniel Happy Putra Faujiah, Risnawati Sarifah fumiaki kimata Habibah, Nafahatul HARRI DWI KURNIA HARRI DWI KURNIA Hasanuddin Z. Abidin Heri Andreas Imandita, Anisa Nur In In Inayatillah Iyad Suryadi Iyan Mulyana Julehah, Julehah M Aditya Firdaus Mipi A. Kusuma Muhamad Rif'at Syadli Muhammad Aditya Firdaus Muhammad Gamal Muhammad Hendrasto Muhammad Iqbal Imanullah Muhammad Zahran As Shidiq Muhyiddin, Afif Muhammad N. M. R. RATIH C. PERBANI N. M. R. RATIH C. PERBANI Nazwa Nurazizah Ni Made Rai Ratih Cahya Perbani Nita Ramadhani Ony K. Suganda Raden Syara Resa Anzela Sandi Muhamad Permana Siti Latipah