Article Per Year (5 Year)
p-Index From 2021 - 2026
1.503
P-Index
This Author published in this journals
All Journal Jurnal Buana Informatika Seminar Nasional Informatika (SEMNASIF) Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer Conference SENATIK STT Adisutjipto Yogyakarta Angkasa: Jurnal Ilmiah Bidang Teknologi Compiler KACANEGARA Jurnal Pengabdian pada Masyarakat Jurnal Pendidikan Kewarganegaraan MEANS (Media Informasi Analisa dan Sistem) Vortex Indonesian Journal Computer Science (ijcs) Hikamatzu Journal of Multidisciplinary Research
Nurcahyani Dewi Retnowati
Unknown Affiliation
Religion Aerospace Engineering Humanities Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences

Published : 86 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 86 Documents
Search

 3   4   5   6   7 
The Scheduling System of Civil Aviation Based on Web-Based Aviation Safety Regulation Honggowibowo, Anton Setiawan; Retnowati, Nurcahyani Dewi; Wiyono, Koko
SENATIK STT Adisutjipto Vol 5 (2019): Peran Teknologi untuk Revitalisasi Bandara dan Transportasi Udara [ISBN XXX-XXX-XXXXX-
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/senatik.v5i0.301

Abstract

Cabin crew scheduling in the world of flight must be made very carefully. Because in making cabin crew scheduling there are several requirements that must be met by the scheduling officer such as flight time, cabin crew working hours and rest hours. In making the scheduling it takes a long time because the scheduling officer must ensure the cabin crew's duties in carrying out their duties do not exceed or violate these requirements. Therefore, a cabin crew scheduling system was created to assist schedulers in making cabin crew scheduling using PHP and Oracle databases. This scheduling system is designed to be able to calculate flight time, cabin crew working hours and cabin crew rest time so that scheduling officers no longer have difficulty synchronizing these requirements so that cabin crew officers do not violate these requirements with just one step in the process. This system succeeds in doing 9 Minutes 50 Seconds faster than doing it manually in making just 1 flight route. The time difference can be greater if in 1 day there are more than 1 flight route.
Three-Dimensional Flight Simulator Takeoff Movement on Boeing 737-300 Aircraft Irfan, Muhammad; Retnowati, Nurcahyani Dewi; Adiputra, Bangga Dirgantara
Compiler Vol 8, No 2 (2019): November
Publisher : Sekolah Tinggi Teknologi Adisutjipto Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (771.868 KB) | DOI: 10.28989/compiler.v8i2.523

Abstract

The simulator is a form of imitation of conditions describing a behavior in conformity with the reality in which there is an interaction between the user and the simulation. Simulators are very useful for simulating events that can help the teaching and learning system. The result of this final project is a 3D take off simulator on a desktop-based Boeing 737-300 that serves as a training aid and contains an explanation of Boeing 737-300 take off information. This simulator provides ideal data in the form of weight, take off speed, flap settings and distance data to understand the aircraft performing the V1, VR and V2 processes. The research methods carried out include modeling a Boeing 737-300 aircraft using blueprint, asset modeling, and texturing using Blender 3D software then proceed with the design of simulations using Unity software. Simulation tests include black box testing. The results of the black box testing indicate that all functions of the simulator run according to the Windows 7, Windows 8, and Windows 10 operating system with a 64-bit system. Flight simulator is functioning properly and can show information on the movements and conditions od the aircraft in taking flight in the takeoff phase with weight conditions, the speed at which the aircraft drove on the runway, wind pressure conditions on the runway and flaps that will be arranged in this flight simulator.
VIRTUAL TOUR OF SADENG BEACH TOURISM ROUTE USING THE MULTIMEDIA DEVELOPMENT LIFE CYCLE METHOD Retnowati, Nurcahyani Dewi; Nugraheny, Dwi
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 12, No 1 (2020): Mei
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2927.194 KB) | DOI: 10.28989/angkasa.v12i1.578

Abstract

Gunung Kidul is a tourism potential area, one of which is a beautiful beach. Among the beautiful beaches and tourism potential is Sadeng beach. One way to publicize tourism is presented in the form of Virtual tour, so in this study the theme is about the Virtual tour of Sadeng Beach. Virtual tour of Sadeng Beach is one of the media that can be used to help prospective tourists explain about tourist routes from Bukit Bintang to Sadeng Beach, public facilities that are traversed, and detailed information about attractions. The virtual tour of Sadeng Beach tour route uses the Multimedia Development Life Cycle (MDLC) method which consists of determining the concept, design, determining material or data, making, testing, and evaluating. Virtual tour application test results show that this application can be run with a minimum Core i3 specifications with 4GB RAM and Windows 7 (64 bit) operating system with 5 screen resolution options and 6 graphics quality options. User test results with 30 respondents and calculations using a Likert scale showed 75.83% of this application included in the category of very good in terms of mentioning the time and distance from the beginning to the end of the tour.
PEMANFAATAN ENDORSE DAN HASHTAG UNTUK PEMASARAN PRODUK MENGGUNAKAN INSTAGRAM PADA UMKM DI KECAMATAN PATUK KABUPATEN GUNUNG KIDUL Retnowati, Nurcahyani Dewi; Indrianingsih, Yuliani; Honggowibowo, Anton Setiawan
KACANEGARA Jurnal Pengabdian pada Masyarakat Vol 3, No 1 (2020): Januari
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1555.477 KB) | DOI: 10.28989/kacanegara.v3i1.530

Abstract

Micro, Small and Medium Enterprises (MSMEs) are businesses that develop in the community and can increase Indonesia's economic growth. These MSMEs are spread in many areas, including the Patuk District in Gunung Kidul Regency and are engaged in products and services. Until now, the marketing of products carried out by SMEs in Patuk District is conventional marketing, which is marketing products through relationships within the business community. So it is very important to increase product marketing by using online marketing based on social media, one of which is using Instagram. The use of Instagram as a marketing medium also requires the use of endorse and hashtags to further optimize marketing. Therefore, SMEs in Patuk Subdistrict need training on how to use Instagram as a marketing strategy, especially on how to utilize endorse and hashtag so that marketing is expected to be more optimal and targeted. To meet the needs of partners (UMKM actors), mentoring is used in the use of endorse and hashtags on Instagram social media as a product marketing medium by implementing community service, which is a lecturer in the Informatics Engineering Study Program at Adisutjipto College of Technology. This assistance can improve the ability of SMEs in Patuk District to utilize endorse and hashtag using Instagram as an effort to improve product marketing. The results of the community service activities show that 10% of community service participants have not been able to use Instagram optimally because they only come on the first day, 20% of community service participants have been able to use Instsgram well but have not been optimal in using endorse and hashtag, and 70% of community service participants have very optimal using Instagram and utilizing endorse and hashtag.
Analisis CSF, SWOT dan TOWS Studi Kasus: PT Intan Pariwara Klaten Retnowati, Nurcahyani Dewi
Jurnal Buana Informatika Vol 2, No 1 (2011): Jurnal Buana Informatika Volume 2 Nomor 1 Januari 2011
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jbi.v2i1.306

Abstract

Abstract. CSF, SWOT and TOWS Analysis, Case Study: PT Intan Pariwara Klaten. SWOT analysis identified the opportunity and the external threat as well as the strength and the internal weakness. The TOWS strategy matrix explain four types of the strategy that is the SO strategy (Strengths-Opportunities), the strategy WO (Weakness-Opportunities), the strategy St (Strengths-Threaths) and the WT strategy (Weakness-Threaths). In the CSF analysis (Critical Success Factor) was obtained by results that with the existence web interactive could become a development strategy of the marketing, the use of information technology could help the management of the company and the research of the consumer's wish that it was felt needed to increase the company's profit. The threat that was dealt with by PT Intan Pariwara was depicted by the SWOT analysis, in part: more often sprang up the new publisher, the number of available publishers beforehand, and the buyer had the quite high tasteless strength. The strategy that could be taken by PT Intan Pariwara was depicted in the TOWS analysis. Keywords: Critical Success Factor, SWOT, TOWS  Abstrak. Analisis SWOT mengidentifikasi peluang dan ancaman eksternal serta kekuatan dan kelemahan internal. Matriks strategi TOWS membantu manajer mengembangklan empat tipe strategi yaitu strategi SO (Strengths-Opportunities), strategi WO (Weakness-Opportunities), strategi ST (Strengths-Threaths) dan strategi WT (Weakness-Threaths). Pada analisis CSF (Critical Success Factor) didapatkan hasil bahwa dengan adanya web interaktif dapat menjadi suatu strategi pengembangan pemasaran, penggunaan teknologi informasi dapat membantu manajemen perusahaan dan riset keinginan konsumen yang dirasa perlu untuk meningkatkan profit perusahaan. Ancaman yang dihadapi oleh PT Intan Pariwara digambarkan oleh analisis SWOT, antara lain: semakin banyak bermunculan penerbit baru, banyaknya penerbit yang sudah ada sebelumnya, dan pembeli mempunyai kekuatan tawar yang cukup tinggi. Strategi yang dapat diambil oleh PT Intan Pariwara digambarkan dalam analisis TOWS. Kata Kunci: Faktor Penentu Kesuksesan, SWOT, TOWS
Penerapan Sistem Informasi Menggunakan Analisis Value Chain Studi Kasus: PT Intan Pariwara Klaten Retnowati, Nurcahyani Dewi
Jurnal Buana Informatika Vol 2, No 2 (2011): Jurnal Buana Informatika Volume 2 Nomor 2 Juli 2011
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jbi.v2i2.310

Abstract

Abstract. Implementation of Information Systems Using Value Chain Analysis, Case Study: PT Intan Pariwara Klaten. The business activity of PT Intan Pariwara was begun from acceptance of the text, the process editing or the editing of the text, the provisions of all the elements artistic that was needed in the compilation of the book, to handed over CD file the text was ready printed this to the printing house side. The printing house side will afterwards hand over the book that has been printed to the publisher to afterwards be kept in the warehouse to be carried out by the packing and be ready to be distributed to all delegation all over Indonesia. The business strategy for PT Intan Pariwara was to carry out the marketing with marketing powers that had product knowledge that was high enough but also went through an internet media that could increase the company's turnover. The strategy and information technology of the information system for PT Intan Pariwara that is developing the information system that could bridge the publisher with the customer so as to be known by the consumer's wish against products that were produced by the publisher.  Keywords: Information System, Value Chain analysis, Business Strategy Abstrak. Aktivitas bisnis PT Intan Pariwara dimulai dengan penerimaan naskah dari penulis kemuadian dilakukan proses editing atau penyuntingan naskah, penyiapan semua elemen artistic yang dibutuhkan dalam penyusunan buku yang meliputi cover buku dan ilustrasi yang berguna untuk memperjelas materi hingga menyerahkan CD file naskah siap cetak tersebut ke pihak percetakan. Pihak percetakan kemudian akan menyerahkan buku yang sudah dicetak ke penerbit untuk kemudian disimpan di gudang untuk dilakukan pengepakan dan siap didistribusikan ke semua perwakilan di seluruh Indonesia. Strategi bisnis PT Intan Pariwara antara lain strategi pengembangan pemasaran melalui internet dan strategi peningkatan hubungannya dengan pelanggan melalui sistem CRM. Sistem atau aplikasi yang perlu dikembangkan antara lain situs interaktif dan CRM (Customer Relationship Management) Kata Kunci: Sistem Informasi, Analisis Value Chain (Rantai Nilai), Strategi Bisnis
Analisis Lingkungan Internal Dan Eksternal Studi Kasus: PT Intan Pariwara Klaten Retnowati, Nurcahyani Dewi
Jurnal Buana Informatika Vol 1, No 2 (2010): Jurnal Buana Informatika Volume 1 Nomor 2 Juli 2010
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jbi.v1i2.299

Abstract

Abstract. Analysis of Internal and External Environment, Case Study: PT Intan Pariwara Klaten. The analysis of the Eksternal Environment covered the PEST Analysis (Politics, Ekonomi, Sosial and Technology) that included the condition for the macro Indonesian environment, that is the economy, technology, politics/the law, and sosiokultural. The analysis of the Eksternal Environment that was second was the model of competition pressures that explained about five threats, that is the competition from available competitors, competitors's new threat, the threat or substitution services of products, the strength bargained from customers, and the strength bargained from suppliers. The analysis of the Internal Environment used the Diagram of the Context that depicted relations between the system and the external side that were related to the company's business. Relations could be between the system and the external side that were related to PT Intan Pariwara depicted to the diagram of the context that explained that there is four related external sides, that is the Printing House, Writers and the Buyer that consisted of the Elementary School level student and the Senior High School and the public's community.  Keywords: Analysis of External Environment, Analysis of Internal Environment, Business Context Abstrak. Analisis Lingkungan Eksternal meliputi Analisis PEST  (Politik, Ekonomi, Sosial dan Teknologi) yang mencakup kondisi lingkungan makro Indonesia, yaitu perekonomian, teknologi, politik/hukum, dan sosiokultural. Analisis Lingkungan Eksternal yang kedua adalah model tekanan-tekanan kompetisi yang menjelaskan tentang lima ancaman, yaitu persaingan dari pesaing-pesaing yang sudah ada, ancaman pesaing-pesaing baru, ancaman produk-produk atau jasa-jasa substitusi, kekuatan menawar dari pelanggan-pelanggan, dan kekuatan menawar dari pemasok-pemasok. Analisis Lingkungan Internal menggunakan Diagram Konteks yang menggambarkan hubungan antara sistem dan pihak eksternal yang terkait dengan bisnis perusahaan.          Hubungan antara sistem dan pihak eksternal yang terkait dengan PT Intan Pariwara dapat digambarkan pada diagram konteks yang menjelaskan bahwa ada empat pihak eksternal yang terkait, yaitu Percetakan, Penulis, Perwakilan dan Pembeli yang terdiri dari siswa tingkat TK hingga SMA dan masyarakat umum. Kata Kunci: Analisis Lingkungan Eksternal, Analisis Lingkungan Internal, Konteks Bisnis
Layanan Cloud Computing untuk Mendukung Kinerja Administrasi Database Tanpa Menggunakan Perintah SQL Wintolo, Hero; Retnowati, Nurcahyani Dewi; Ibrahim, Andi Ahmad Iswar
Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer Vol 4 No 2 (2020)
Publisher : P3M Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/eltikom.v4i2.174

Abstract

Penelitian ini memiliki tujuan untuk menyediakan layanan dalam bentuk aplikasi untuk melakukan kegiatan Database Manipulation Language (DML) yang diterapkan dalam bentuk cloud computing . Sebanyak tiga buah computer dimanfaatkan untuk memberikan layanan pemrosesan dan penyimpanan database tanpa menggunakan perintah yang ada pada Structure Query Language (SQL) dan satu buah computer digunakan sebagai server yang melayani pengguna untuk melakukan kegiatan DML tanpa menggunakan perintah SQL . Dengan menggunakan teknologi cloud pengelolaan database berbasis SQL yang biasanya menggunakan perintah berbasis command line dapat dilakukan dengan cara yang lebih mudah. Layanan yang diberikan oleh cloud untuk mengelola database berbasis SQL khususnya fungsi DML. Hasil dari implementasi layanan pada jaringan internet, Wireless lan, dan LAN dapat berjalan dengan baik dengan kasus pengujian fungsi pada ketiga media jaringan tersebut. Dengan demikian para pengguna yang sama sekali tidak mengerti bahasa SQL dapat menggunakan layanan ini dengan mudah untuk mengolah database SQL secara mandiri.
Analisis Lingkungan Internal Dan Eksternal Studi Kasus: PT Intan Pariwara Klaten Nurcahyani Dewi Retnowati
Jurnal Buana Informatika Vol. 1 No. 2 (2010): Jurnal Buana Informatika Volume 1 Nomor 2 Juli 2010
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jbi.v1i2.299

Abstract

Abstract. Analysis of Internal and External Environment, Case Study: PT Intan Pariwara Klaten. The analysis of the Eksternal Environment covered the PEST Analysis (Politics, Ekonomi, Sosial and Technology) that included the condition for the macro Indonesian environment, that is the economy, technology, politics/the law, and sosiokultural. The analysis of the Eksternal Environment that was second was the model of competition pressures that explained about five threats, that is the competition from available competitors, competitors's new threat, the threat or substitution services of products, the strength bargained from customers, and the strength bargained from suppliers. The analysis of the Internal Environment used the Diagram of the Context that depicted relations between the system and the external side that were related to the company's business. Relations could be between the system and the external side that were related to PT Intan Pariwara depicted to the diagram of the context that explained that there is four related external sides, that is the Printing House, Writers and the Buyer that consisted of the Elementary School level student and the Senior High School and the public's community.  Keywords: Analysis of External Environment, Analysis of Internal Environment, Business Context Abstrak. Analisis Lingkungan Eksternal meliputi Analisis PEST  (Politik, Ekonomi, Sosial dan Teknologi) yang mencakup kondisi lingkungan makro Indonesia, yaitu perekonomian, teknologi, politik/hukum, dan sosiokultural. Analisis Lingkungan Eksternal yang kedua adalah model tekanan-tekanan kompetisi yang menjelaskan tentang lima ancaman, yaitu persaingan dari pesaing-pesaing yang sudah ada, ancaman pesaing-pesaing baru, ancaman produk-produk atau jasa-jasa substitusi, kekuatan menawar dari pelanggan-pelanggan, dan kekuatan menawar dari pemasok-pemasok. Analisis Lingkungan Internal menggunakan Diagram Konteks yang menggambarkan hubungan antara sistem dan pihak eksternal yang terkait dengan bisnis perusahaan.          Hubungan antara sistem dan pihak eksternal yang terkait dengan PT Intan Pariwara dapat digambarkan pada diagram konteks yang menjelaskan bahwa ada empat pihak eksternal yang terkait, yaitu Percetakan, Penulis, Perwakilan dan Pembeli yang terdiri dari siswa tingkat TK hingga SMA dan masyarakat umum. Kata Kunci: Analisis Lingkungan Eksternal, Analisis Lingkungan Internal, Konteks Bisnis
Analisis CSF, SWOT dan TOWS Studi Kasus: PT Intan Pariwara Klaten Nurcahyani Dewi Retnowati
Jurnal Buana Informatika Vol. 2 No. 1 (2011): Jurnal Buana Informatika Volume 2 Nomor 1 Januari 2011
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jbi.v2i1.306

Abstract

Abstract. CSF, SWOT and TOWS Analysis, Case Study: PT Intan Pariwara Klaten. SWOT analysis identified the opportunity and the external threat as well as the strength and the internal weakness. The TOWS strategy matrix explain four types of the strategy that is the SO strategy (Strengths-Opportunities), the strategy WO (Weakness-Opportunities), the strategy St (Strengths-Threaths) and the WT strategy (Weakness-Threaths). In the CSF analysis (Critical Success Factor) was obtained by results that with the existence web interactive could become a development strategy of the marketing, the use of information technology could help the management of the company and the research of the consumer's wish that it was felt needed to increase the company's profit. The threat that was dealt with by PT Intan Pariwara was depicted by the SWOT analysis, in part: more often sprang up the new publisher, the number of available publishers beforehand, and the buyer had the quite high tasteless strength. The strategy that could be taken by PT Intan Pariwara was depicted in the TOWS analysis. Keywords: Critical Success Factor, SWOT, TOWS  Abstrak. Analisis SWOT mengidentifikasi peluang dan ancaman eksternal serta kekuatan dan kelemahan internal. Matriks strategi TOWS membantu manajer mengembangklan empat tipe strategi yaitu strategi SO (Strengths-Opportunities), strategi WO (Weakness-Opportunities), strategi ST (Strengths-Threaths) dan strategi WT (Weakness-Threaths). Pada analisis CSF (Critical Success Factor) didapatkan hasil bahwa dengan adanya web interaktif dapat menjadi suatu strategi pengembangan pemasaran, penggunaan teknologi informasi dapat membantu manajemen perusahaan dan riset keinginan konsumen yang dirasa perlu untuk meningkatkan profit perusahaan. Ancaman yang dihadapi oleh PT Intan Pariwara digambarkan oleh analisis SWOT, antara lain: semakin banyak bermunculan penerbit baru, banyaknya penerbit yang sudah ada sebelumnya, dan pembeli mempunyai kekuatan tawar yang cukup tinggi. Strategi yang dapat diambil oleh PT Intan Pariwara digambarkan dalam analisis TOWS. Kata Kunci: Faktor Penentu Kesuksesan, SWOT, TOWS
Co-Authors abdul haris subarjo, abdul haris Aditya Risan Prambudi Agus Basukesti Agus Basukesti, Agus Aldri Frinaldi Anggraini Kusumaningrum Anggraini Kusumaningrum, Anggraini Anggriawan, Digga Anton Setiawan Honggowibowo Astika Ayuningtyas Astika AyuningTyas, Astika Atika Rina Bangga Dirgantara Adiputra Basir Basir Basir, Basir Buyung Junaidin, Buyung Daru Retnowati Daru Retnowati, Daru Dasrial, Dasrial Debby Wahyu Sulistiyanto Dedet Hermawan Setiabudi, Dedet Hermawan Denny Dermawan Denny Dermawan Digga Anggriawan Djarot Wahju Santoso Dwi Nugraheny, Dwi Eko Suryanto Eko Suryanto Eko Teguh Prasetyo FAJAR NUGROHO Gilang Wiratmaja Hamdani Widyatmoko Haruno Sajati Hidayat, Zhulfa Arif I Made Kariada Ibrahim, Andi Ahmad Iswar Ifrisma, Irisma Irawan, Wahyu Irisma Ifrisma Kariada, I Made Kristina Nona, Kristina Kurniawan, Indra Hading Latumaone, Yulis Robert Luh Putu Ratna Sundari Mafazan, Mukhamad Richo Mahmuda Ghazni Rahmawan, Mahmuda Ghazni Mardhatillah, Zikri Maria Asumpta Deny Kusumaningrum, Maria Asumpta Deny Muhammad Irfan Muhammad Zainal Muttaqim, Muhammad Zainal Mukhamad Richo Mafazan Mutropin, Hanik Atul Muttaqin Muttaqin Nasrillah, Muhammad Khairu Pradana Nur Prasetya Prambudi, Aditya Risan Prasetya, Pradana Nur Prasetyo Fendriyanto, Prasetyo Prasetyo, Eko Teguh Pujiastuti, Asih Rande, Engelbertus Rina, Atika Rohman, Nurwahiddatur Salam Aryanto Saryanto Saryanto Sri Mulyani Sulistiyanto, Debby Wahyu Sumarsono Sumarsono Sumarsono Sumarsono Sumarsono Sumarsono Sunaryo, Heri Supri Ermanto, Supri Talantha, Frencha Wahyu Irawan Wibowo, Ilham Satrio Widyatmoko, Hamdani Wintolo, Hero Wiratmaja, Gilang Wiyono, Koko Yenni Astuti, Yenni Yoga Yuniadi Yuliani Indrianingsih Zhulfa Arif Hidayat Zikri Mardhatillah