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All Journal TEKNIK J@TI (TEKNIK INDUSTRI) Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Kesehatan Lingkungan indonesia Media Statistika MATEMATIKA SAINS DAN MATEMATIKA JURNAL AKUNTANSI DAN AUDITING Jurnal Ekonomi & Bisnis PNJ (JEKBIS PNJ) Jurnal Inovasi Pendidikan Jurnal Gaussian Diponegoro Journal of Accounting Jurnal Pendidikan Ekonomi (JUPE) SELONDING Indonesian Journal of Conservation Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Jurnal S2 Pendidikan Sains Jurnal Teknik Elektro JAM : Jurnal Aplikasi Manajemen Rekayasa Mesin Indonesian Journal of Tropical and Infectious Disease JURNAL AKUNTANSI UNIVERSITAS JEMBER Semesta Teknika Jurnal Sains dan Inovasi Perikanan/Journal of Fishery and Innovation (JSIPi) Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Economic Education Analysis Journal Turbo : Jurnal Program Studi Teknik Mesin JURNAL PENDIDIKAN GLASSER JURNAL EKONOMI PENDIDIKAN DAN KEWIRAUSAHAAN Prosiding Seminar Nasional Sains dan Teknologi Terapan Adimas : Jurnal Pengabdian Kepada Masyarakat Aquacultura Indonesiana JURNAL AGRI-TEK Kurs : Jurnal Akuntansi, Kewirausahaan dan Bisnis Social, Humanities, and Educational Studies (SHEs): Conference Series Mudir : Jurnal Manajemen Pendidikan Balance Vocation Accounting Journal Economic Education and Entrepreneurship Journal Jurnal Ilmiah Cendekia Eksakta Jurnal Sistem Komputer & Kecerdasan Buatan JPP (Jurnal Pendidikan dan Pembelajaran) JOURNAL OF INFORMATION SYSTEM RESEARCH (JOSH) Pilar Teknologi : Jurnal Penelitian Ilmu-ilmu Teknik Aviasi : Jurnal Ilmiah Kedirgantaraan Community Empowerment Jurnal Cahaya Mandalika Progress in Social Development International Journal of Health, Economics, and Social Sciences (IJHESS) International Journal of Community Service Jurnal Pendidikan dan Penciptaan Seni Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) J-KIP (Jurnal Keguruan dan Ilmu Pendidikan) Fruitset Sains : Jurnal Pertanian Agroteknologi Jurnal Manajerial Bisnis JPMA Seminar Nasional Produk Terapan Unggulan Vokasi Journal of Applied Business and Technology Jurnal Bisnis Event Politeknosain Reflection: Education and Pedagogical Insights PROCEEDING OF INTERNATIONAL CONFERENCE ON BUSINESS MANAGEMENT AND ACCOUNTING Interconnection: An Economic Perspective Horizon Jurnal Administrasi Profesional AutoMech : Jurnal Teknik Mesin JUDIKAT: Jurnal Pengabdian Kepada Masyarakat Neraca Manajemen, Akuntansi, dan Ekonomi Journal of Bioresources and Environmental Sciences PREDATECS: Public Research Journal of Engineering, Data Technology and Computer Science JPAP (Jurnal Praktisi Administrasi Pendidikan) Bina Bahari : Jurnal Pengabdian Kepada Masyarakat eJEBA
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ANALISIS KESESUAIAN PENGGUNAAN LAHAN PADA DAERAH RAWAN TANAH LONGSOR DI KABUPATEN TEGAL Gilang Rupaka, Anggun Prima; Suharyanto, Suharyanto; Sudarno, Sudarno
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 12, No 2 (2015): September 2015
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (827.376 KB) | DOI: 10.14710/presipitasi.v12i2.52-56

Abstract

The frequency of landslides in Tegal regency increasing every year. The distribution area arealso more widespread, especially in districts Jatinegara, Bojong and Bumijawa. These regions has ahilly topography profile with a height ranging from 400 - 1200 meters above sea level. The landslide’sfactors that use as the parameters in this study are rainfall, slope, soil type, depth of soil solum andland use. Suitability of land use based on the level of vulnerability to landslides associated with thelevel of capacity and vulnerability, because the area that not conform based on these factors are theresidential area.The method used to calculate and analyze the landslide-prone area in this study are with thehelp of GIS. The software were used to analyze consist of ArcGIS 10, ER Mapper 7.0 and Basemap.Satellite images digitized with ArcGIS to produce maps of land use. Then the land-use maps overlaidwith maps of slope, soil type maps, rainfall maps and depth of solum. Predefined values for eachparameter were then summed and classified based on assessment standards. The landslidesusceptibility map is then used to analyze the suitability of land in landslide-prone areas in Tegalregency. The level of capacity and vulnerability to disasters in areas prone to landslides obtained byinterview in the form of a questionnaire.Subdistrict Jatinegara, Bojong and Bumijawa has an area of 25.000 hectares, 37,81% of thearea that included in the "Landslide Prone" category, while the 59.82% of the area goes into the"Pretty-Prone Landslide" category. Conversion of forest land into agricultural production into is the oneof the factors that aggravate the landslide that happened. Villagers who live in landslide-prone areasdo not have the awareness that cutting down trees and intensive agriculture are causing landslidesthat in their area, in addition to soil type and slope factors that dominant. Vulnerability and capacity tolandslides in the region included in the low category. Factors that influence are economic level,education level, living conditions and the condition of the access road. 
PERKEMBANGAN BIOFILM NITRIFIKASI DI FIXED BED REACTOR PADA SALINITAS TINGGI Sudarno, Sudarno
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 9, No 1 (2012): Vol 9, No 1 (2012)
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.084 KB) | DOI: 10.14710/presipitasi.v9i1.1-9

Abstract

Development of nitrification biomass that is growing attached on carried material was examined by measuring its ammonium or nitrit oxidation rates. Porous ceramic rings (36 pieces) were put into the fixed bed reactor (FBR ). The fixed bed reactor  that was operated continuously for more than 500 day was continued to be operated at a HRT of 1 day, a DO of above 5 mg L-1 and pH of 8. Ammonia concentration in the feeding was 50 mg NH4+-N L-1.  At days 1, 5, 12, 20, 33 and 50, six porous ceramic rings were taken out and then ammonia and nitrite removal rate by biofilm in the ceramic rings was separately measured. The measurement of rates was done in small cylindrical glass reactors with initial concentration of ammonia and nitrite was 10 mg N L-1. Until 50 days of incubation AORs were always higher than NORs. Additionally, ammonia oxidizers attach or grow faster in the porous ceramic material than nitrite oxidizers. Keywords: saline wastewater, Ammonium Oxidizing Bacteria, Nitrit Oxidizing Bacteria, biofilm
KARAKTERISTIK UMUR PRODUK PADA MODEL WEIBULL Sudarno, Sudarno
MEDIA STATISTIKA Vol 2, No 2 (2009): Media Statistika
Publisher : Department of Statistics, Faculty of Science and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (179.855 KB) | DOI: 10.14710/medstat.2.2.105-110

Abstract

Long life of product can reflect its quality. Generally, good products have long life. There are functions that relationship with life as reliability function, hazard rate function, mean time to failure, and mean residual life. In this writing those functions be used to product which has the failure time of a component is distributed Weibull. The reliability function is exponential function. For value θ is constant, the reliability value is decrease function, if γ is greather with respect to time. Meanwhile hazard rate function could be monotone increase function, constant function, monotone decrease function, if doing by simulation with shape parameter by one. Really, the mean time to failure product hang on Weibull distribution parameters. But the mean residual life is reciprocal with respect to its reliability.   Keywords:      Weibull Model, Reliability and Hazard Rate Functions, Mean Time to Failure, Mean Residual Life.
GRAFIK PENGENDALI RAGAM SAMPEL UNTUK MONITORING VARIABILITAS PROSES PRODUKSI Sudarno, Sudarno
MEDIA STATISTIKA Vol 7, No 1 (2014): Media Statistika
Publisher : Department of Statistics, Faculty of Science and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (307.261 KB) | DOI: 10.14710/medstat.7.1.11-19

Abstract

The control chart is a graphical display or a quality characteristic that has been measured or computed from a sample versus the sample number or time. The variance chart is used to monitoring variability of production process. It is an altenative way to check variability process rather than R chart or s chart. The problems will be done are find the parameters of variance chart, predict process capability, verify defect per million opportunities (DPMO) of process result and simulation kinds of shift sigma values. This result could be used as information to production process at the future time. The result of discussion that upper conrol limit = 0.0014, center line = 0.00073, lower control limit = 0.00028, process capability = 1.003 and DPMO = 2,620 part per million. These parameters used for information in the next production process. Keywords: Variance Chart, Process Capability, Defect per million opportunities, Shift.
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI INDEK MUTU BENANG MENGGUNAKAN METODE POHON REGRESI (Studi Kasus di PT. Industri Sandang Nusantara Unit Patal Grati) Dewi, Hesti Sari; Wilandari, Yuciana; Sudarno, Sudarno
MEDIA STATISTIKA Vol 5, No 2 (2012): Media Statistika
Publisher : Department of Statistics, Faculty of Science and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (262.685 KB) | DOI: 10.14710/medstat.5.2.75-86

Abstract

Quality for ripe material (yarn) really necessary for the company, therefore needs to control the product (ripe material), so we are able to know the unmatched product percentage of the company standard and to know the cause of the unmatched. The appropriate method to know the influential factor to company yarn quality successes, among those regression tree method. Regression tree is one of CART’s classification method. CART is a useful non parametric statistical method to get an accurate data group as distinguishing as of a classification. Because it has continuous type of response variable, so that CART can create regression tree. Regression tree is utilized to figure relationship among one response variable with one or more predictor variable that gets continued character and also category. The variables that have influence for yarn quality index at PT. Industri Sandang Nusantara Patal Grati’s Unit are raw material, machine output year, air humidity (RH) and hall temperature. The result of the research is that the year of machine output variable is the most influence to foot up yarn quality index and has main contribution in the formation of regression tree.   Keywords : Regression tree, CART, Yarn quality index, Rayon.
PEMODELAN GRAFIK PENGENDALI TOTAL DAN RATAAN DISKRIT UNTUK GENERALISASI DISTRIBUSI GEOMETRIK Sudarno, Sudarno; Mukid, Moch. Abdul
MEDIA STATISTIKA Vol 9, No 1 (2016): Media Statistika
Publisher : Department of Statistics, Faculty of Science and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (506.781 KB) | DOI: 10.14710/medstat.9.1.63-73

Abstract

Total events which do by counting will be obtained discret data type. The discret data type and geometric distribution could be drawn by total number of events chart (G chart) and average number of event chart (H chart). In this research result upper control limit, center line, and lower control limit, both G chart and H chart. Data processing of the case, resulting G chart that upper control limit is 80.77 and center line is 39.8, meanwhile by H chart obtained that upper control limit and center line, respectively, 11.54 and 5.8. The results of G chart and H chart could be used for prediction events at the future to anticipate the real problems. Therefore, the systems have no problem and their activities will be dynamic, stable and best perform. Keywords:Geometric Distribution, Total Number of Event Chart, Average Number of Event Chart
MENENTUKAN MATRIKS PELUANG TRANSISI UNTUK WAKTU OKUPANSI MENGGUNAKAN TRANSFORMASI LAPLACE DAN MATRIKS EKSPONENSIAL Sudarno, Sudarno
MEDIA STATISTIKA Vol 8, No 2 (2015): Media Statistika
Publisher : Department of Statistics, Faculty of Science and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (157.1 KB) | DOI: 10.14710/medstat.8.2.81-91

Abstract

The transition probability matrix is a matrix which contains some probability among two state. It has properties that every probability is non-negative and sum by row at every state is one. This paper want to determine the transition probability matrix by Laplace transform and exponential of a matrix methods. To construct the transition probability matrix by Laplace transform depends on identity matrix and generator matrix, but by matrix exponential method depends on generator matrix only. In this research obtained result that matrix exponential method easier than Laplace transformation. Because it is aided by software and programming. The transition probability matrix can be used to predict probability each other state. It could be used to predict value of state probability on long-term or limiting behavior, too. Otherwise, the transition probability mtrix could be used to construct occupancy times matrix.Keywords: Generator matrix, Laplace transform, Exponential matrix, Occupancy times matrix.
ANALISIS KUALITAS PELAYANAN DAN PENGENDALIAN KUALITAS JASA BERDASARKAN PERSEPSI PENGUNJUNG Sudarno, Sudarno; Rusgiyono, Agus; Hoyi, Abdul; Listifadah, Listifadah
MEDIA STATISTIKA Vol 4, No 1 (2011): Media Statistika
Publisher : Department of Statistics, Faculty of Science and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (735.536 KB) | DOI: 10.14710/medstat.4.1.33-45

Abstract

One of the factors which determine customer safisfaction is costumer perceive about service quality that focus to five service quality dimension that are tangible, reliability, responsiveness, assurance, and empathy. This research study service serve quality at UPT Perpustakaan Universitas Diponegoro Semarang with object to know customer perceive with respect to some variables in service quality dimension and satisfaction level. Importance-Performance Analysis used to map relation between importance with performance of respective variables to be and see gap between performance with importance of them variables. Customer Satisfaction Index (CSI) used to analyze all satisfaction respondent level. The T2 Hotelling control chart to know servicing process stability with respect to costumer perceive. Research result shows that the gap is all negative value. It means library performance that represented by 21 variables include 5 service quality dimension still under expected costumer. The value CSI is 62,903% that meaning at enough satisfaction criterion. There are five points at above upper control limit in the T2 Hotelling control chart. Therefore it can be said that process haven’t been controlled by statistical.   Keywords: Service Quality, Importance-Performance Analysis, Customer Satisfaction Index, Hotelling T2 Control Chart.
KAJIAN ESTIMASI-M IRLS MENGGUNAKAN FUNGSI PEMBOBOT HUBER DAN BISQUARE TUKEY PADA DATA KETAHANAN PANGAN DI JAWA TENGAH Pradewi, Elen Dwi; Sudarno, Sudarno
MEDIA STATISTIKA Vol 5, No 1 (2012): Media Statistika
Publisher : Department of Statistics, Faculty of Science and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (606.598 KB) | DOI: 10.14710/medstat.5.1.1-10

Abstract

Ordinary Least Squares (OLS) is one method of parameter estimation in regression analysis. However, the presence of outliers can cause estimation of regression coefficients obtained are not exact. Act of throwing away an outlier is not a wise move, because sometimes outliers provide significant information. Therefore, robust regression methods are needed to data contain outliers. This paper will use robust regression estimation method by M-estimation. This estimation use Iteratively Reweighted Least Squares (IRLS) method with weighting function by Huber and Tukey Bisquare. IRLS is applied to the case of food security in Central Java in 2007 that is influenced by the stock of rice, harvested area, average production, price of rice and the amount of consumption. The purpose of this writing is to compare goodness of M-estimation IRLS using Huber and Tukey Bisquare function in estimating the model parameters of food security in Central Java in 2007. Based on the research results can be concluded that the M-estimation by the Tukey Bisquare is better recommended than Huber function. This can be seen by value results of Mean Square Error and determination coefficient
Metode Nonlinear Least Square (NLS) untuk Estimasi Parameter Model Wavelet Radial Basis Neural Network (WRBNN) Santoso, Rukun; Sudarno, Sudarno
MEDIA STATISTIKA Vol 10, No 1 (2017): Media Statistika
Publisher : Department of Statistics, Faculty of Science and Mathematics, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (629.895 KB) | DOI: 10.14710/medstat.10.1.49-59

Abstract

The use of wavelet radial basis model for forecasting nonlinear time series is introduced in this paper. The model is generated by artificial neural network approximation under restriction that the activation function on the hidden layers is radial basis. The current model is developed from the multiresolution autoregressives (MAR) model, with addition of radial basis function in the hidden layers. The power of model is compared to the other nonlinear model existed before, such as MAR model and Generalized Autoregressives Conditional Heteroscedastic (GARCH) model. The simulation data which be generated from GARCH process is applied to support the aim of research. The sufficiency of model is measured by sum squared of error (SSE). The computation results show that the proposed model has a power as good as GARCH model to carry on the heteroscedastic process.Keywords:Wavelet, Radial Basis, Heteroscedastic Model, Neural Network Model.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Hoyi Abdullah Abdullah Abu Khalid Rivai Achmad Tavip Junaedi Achmad, Nanang Suffiandi Adelia, Qaula Adi Mustiko, Vijay Adipradana, Arrizka Yanuar Agung Sugeng Widodo Agus Rusgiyono Agus Setyawan Agus Subagio Agustina, Silva Nasriati Ahmad Mustafa Akhmad, Nanang Suffiadi Al Hakim, Faris Helmi Alan Prahutama Albert, Albert Setiawan Harijanto Ali Selamat Alimina, Naslina Amirudin Amirudin Amries Rusli Tanjung Anantyo, Natanael Raka Andi Andi Angelina, Dian Anggraini, Asterina Anisa Alfiani Rahayu Arami, Hasnia Arami, Hasnia Arif Sudarmanto, Arif Ariffandita Nuri Muttaqin Arifin, Rizal Aripianti, Faridha Ariyanto Wibowo, Ariyanto Arman Pariakan Asismarta Asismarta, Asismarta Asriyana, . Aulia, Ananda Putri Aziz Nur Bambang Bambang Hermanto Budi Harsanto, Aris Budi Prasetyo Samadikun Budi Warsito Budiyono Budiyono Cahyono, Agung Dwi Dadtun, Yusana Sasanti Damayanti, Sindi Darmarastri, Hayu Adi Desriyanti, Desriyanti Dewi Kusuma Wardani Dewi Setya Kusumawardani Di Asih I Maruddani Diah Safitri Dian Kusuma Didik Purwadi Dini Octoria Djalal Er Riyanto Dua, Iyam L. Dwars Soukotta Dwi Ispriyanti Dwi Wulandari Elen Dwi Pradewi Endina Sulistiarini Erniyawati Mustaqomah, Erniyawati Eva Zulfa Fadelan Fadelan, Fadelan Fanniya Dyah Prameswari Fatan, Mohd. Adzka Ferry Hermawan Fitri Risalawati Hadiyanto Hadiyanto Hafniza Amir Halim, Rossa Fitria Hamdani Abdulgani, Hamdani Hamzah Hamzah Hanny Hafiar Hantarum, Hantarum Harahap, Malasari Hardiyanti, Nurandani Hari Suprapto Harrison, Edward Haryono S. Huboyo, Haryono S. Hasbi Yasin Hery Teguh Setiawan Hesti Sari Dewi Hosang, Djefry P Hutahuruk, Marice Br I Gusti Ngurah Antaryama Imam Buchori INDRAYANI INDRAYANI Indri Yovita Irsan, La Ode Muhammad Ita Tetriana Agustini Jatmiko Endro Suseno Johari, Norhasnidawani Joko Nugroho, Kurniawan Judisseno, Rimsky K. Kamri, Syamsul Kande, Fredrik Abia Kartika Kartika Komardi, Dadi KUNTANG WINANGUN Kurniasari, Frista Kurrohman, Taufiq Lailly, Novi Nur Leny Noviani Liem Ek Bien Liem Ek Bien Listifadah Listifadah Listyarini, Sri luhung, Putro adi Lumbantobing, Yuvita Chantri Luntungan, Frans Lusida, Terrence Timothy Evan Lutfiyah, Nanik Marice Br Hutahuruk Mei Indrawati, Mei Miftah Syarif, Miftah Miranti Marita Sari Moch. Abdul Mukid Moningka, Mario Mubarak, Fauzi Mubarak, Haykal Alya Muhamad Faliqul Asbah Muhamad, Fuad Muhammad Alhan Muhammad Fadhil Muhammad Nur Muhammad Sabandi Muhrodin, Muhrodin Muliyadi Muliyadi Mulyanto, Cicuk Munaji, Munaji Mustafid Mustafid Nicholas Renaldo Nining Ika Wahyuni Nisa, Mukrimatun Nourma Yulia, Nourma Novitasari, Artha Dewi Nugroho, Prastiyo Nugroho, Yoga Adi Nuryanto, Edi Nyoto Nyoto, Nyoto Oktaviani Ari Wardhaningrum Pangestu, Robi Etdji Pangow, Tammy T.V. Polii, Ivonne Pramesti, Ajeng Lakshita Pramestiara Dewiga, Pramestiara Prasetyo, Indra Prastya, Anggit Maulana Pratama, Angga Yoga Prayetno, Muhammad Pringgo Priyanto, Asep Priyono Priyono Priyono Priyono Priyono Purwanto Purwanto Purwati, Astri Ayu Puspita, Dewi Ayu Putri, Novita Yulia Rachmawati, Febriyani Fitri Rahayu, Winarni Rahmaddian Primasari Rahman, Sarli Raihan, Muhammad Ramadan, Bimastyaji Surya Ramadhan, Syahdan Sandhika Ramatulloh, Arya Eka Rangkang, Jeanely Ratih Nurmalasari, Ratih Redemtus Heru Tjahjana Regita, Vivian Riana Ayu Andam Pradewi Ririn Sulpiani Riskon Ginting Riyanto, Irfan Yopi Riza Fatoni Hidayat Rossi Prabowo Rukun Santoso Rupaka, Anggun Prima Gilang Salman Alfarisy Totalia Samosir, Jessika Aurora Saputra, Bagos Aji Saputra, Restu Jati Sardjono, Aryapandu Zikri Sarifah Sarifah Sariffudin, Mochammad Sarwanto Sarwanto Satriyo Adhy Selvi Marcellia Setiani, Eri Sevendy, Tandy Sirun, Artian Siswanto, Romi Slamet Wahyudi Slat, Ventje B Sri Hartini Sri Hutami Sri Sumiyati Suasti Aswan Sudenroy Mentang Sudjito Soeparman Sugito - Sugiyanto, Shabrina Mitsalina Suhardjo Suharyana Suharyana Suhendra, Muhammad Arif Sulmartiwi, L. Sunaryo Sunaryo Supariadi, Supariadi Suparti Suparti suryawan, ryan firdiansyah Susanto Susanto Sutirto, Tundjung Wahdi Suyanto Suyanto Suyono Suyono Syah, Moch. Aziz Zulian Syanne Pangemanan Syukri Fathudin Achmad Widodo Tadjudah, Muslim Takaendengan, Teddy Taman Ginting, Taman Tambunan, Johannes Tarno Tarno Taylor, John Alexander Tejakusuma, Sabrina Prabawati Titik Istirokhatun Tri Retnaningsih Soeprobowati Triastuti Wuryandari Udi Harmoko Udik Budi Wibowo Ummayah, Putri Qodar Valencia, Erica Veronica, Kristy Victoria Dwi Murti Wahyuni, Nurul Sri Wahyuningsih, Rintatik Warsana, Warsana Wawan Trisnadi Putra, Wawan Trisnadi Wetty Anggun Werti, Wetty Anggun Wicaksono, Yoga Arob Widha Sunarno Widodo, Amalia Kartika Dewi Winardi, Yoyok Wuragil Septi Wulandari Yahya Nur Ifriza Yaya Finayani Yuciana Wilandari Yundari, Yundari Yusrizal Yusrizal Yusuf, Farid