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All Journal Statistika SAMARAH: Jurnal Hukum Keluarga dan Hukum Islam JURNAL PENDIDIKAN TAMBUSAI Cokroaminoto Journal of Primary Education Jurnal Ekonomika Dan Bisnis Journal of Fundamental Mathematics and Applications (JFMA) Jurnal Penelitian Rumpun Ilmu Teknik Jurnal 7 Samudra Politeknik Pelayaran Surabaya Impression : Jurnal Teknologi dan Informasi (Journal of Environmental Sustainability Management) Indonesian Journal of Nutritional Epidemiology and Reproductive
Rika Fitriani
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Nursing Public Health Social Sciences Transportation

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Perbandingan Metode Partial Least Square (PLS) dengan Regresi Komponen Utama untuk Mengatasi Multikolinearitas Nurhasanah Nurhasanah; Muhammad Subianto; Rika Fitriani
STATISTIKA: Forum Teori dan Aplikasi Statistika Vol 12, No 1 (2012)
Publisher : Program Studi Statistika Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jstat.v12i1.1059

Abstract

Dalam mengatasi multikolinearitas pada suatu data, ada beberapa metode yang dapat digunakan,diantaranya yaitu metode Partial Least Square (PLS) dan metode regresi komponen utama (RKU).Data yang digunakan dalam penulisan ini adalah data sekunder yang diperoleh dari JurnalTechnometrics (Naes, 1985). Hasilnya menunjukkan bahwa metode PLS lebih baik dari pada RKUberdasarkan nilai koefisien determinasi (R2) yang tinggi, nilai Mean Square Error Prediction (MSEP)dan nilai Root Mean Square Error Prediction (RMSEP) yang minimum.
ARTIFICIAL NEURAL NETWORK APPLICATION IN MODELING MORTALITY OF COVID-19 PATIENTS IN INDONESIA Fitriani, Rika; Nugraha, Ruth Cornelia
Journal of Fundamental Mathematics and Applications (JFMA) Vol 6, No 1 (2023)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jfma.v6i1.17861

Abstract

The Indonesian government and public healthcare system have been under massive pressure dueto increased infections and mortality rates among Covid-19 patients. An appropriate model isneeded to model the mortality of Covid-19 patients in Indonesia to help the Indonesiangovernment develop the right policy for dealing with the Covid-19 pandemic. Artificial neuralnetworks are increasingly popular in various research fields. Artificial neural networks can detectspecific patterns in mortality modeling. In this study, we use artificial neural networks to modelthe mortality rate of Covid-19 patients in Indonesia. We try combinations of activation functions,learning rates, and hidden layers for the best predictions. We compare the prediction accuracy ofartificial neural networks with that of the Holt-Winters method. The results showed that the bestmodel of artificial neural networks produced an RMSE of 3.0530. In contrast, the Holt-Wintersmethod produced an RMSE of 664.9022. Therefore, the artificial neural networks performedbetter than the Holt-Winters method in analyzing mortality data of Covid-19 patients inIndonesia.
Rancang Bangun System Otomatisasi Pencegahan Overload Deck Conveyor pada Kapal CCL Padmasari Bangkit Risang Nugroho; Edi Kurniawan; Rika Fitriani
Jurnal Penelitian Rumpun Ilmu Teknik Vol. 4 No. 1 (2025): Jurnal Penelitian Rumpun Ilmu Teknik
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/juprit.v4i1.4664

Abstract

Coal as an alternative energy is widely found in Indonesia. To support the coal distribution process, a means is needed in the form of a floating conveyor ship that will distribute coal from the barge to the bulk carrier in very large quantities. This research aims to examine the system that occurs on the ship from the original speed changed manually using a potentiometer to automatically using the fuzzy logic method. The process of this tool works by changing the speed automatically using the fuzzy method, entering the input membership into the fuzzy membership then the parameters are detected by the sensor, the results of the detection are displayed on the LCD layer. The methodology and design of this system will be carried out using the experimental method where this method creates a new product with several trials so that later this tool can increase efficiency during the loading and unloading process on the ship, and it is tested to what extent the sensor can detect the load quickly using the fuzzy method. The results of this overload prevention system show that the system can work optimally in reading the load, as well as the accuracy of the sensor which can read the amount of load very quickly in less than 1 second.
Tinjauan Hukum Islam tentang Pembebanan Mut’ah dan Nafkah Iddah terhadap Suami yang Murtad (Studi Kasus Putusan Pengadilan Agama Nganjuk No: 1830/Pdt.G/2016/PA.Ngj) [Review of Islamic Law on The Imposition of Mut'ah and Living Iddah against Apostate Husbands (Case Study of Nganjuk Religious Court Decision No: 1830/Pdt.G/2016/PA. Ngj)] Fitriani, Rika; Aziz, Abdul
Samarah: Jurnal Hukum Keluarga dan Hukum Islam Vol 3, No 2 (2019): Samarah: Jurnal Hukum Keluarga dan Hukum Islam
Publisher : Islamic Family Law Department, Sharia and Law Faculty, Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.802 KB) | DOI: 10.22373/sjhk.v3i2.5242

Abstract

When obligations do not work in a balanced manner in fostering a household, disputes and arguments often occurs which will result in the termination of a marriage.  Divorce can occur by various factors in a marriage.  One of the factors that divorce causesare one among apostate husbands or wives, which if the marriage continues to be maintained will cause loss. As a result of the divorce because the husband has lapsed into marriage, the marriage is immediately finished, and if the marriage is fulfilled, a wife will not get mut'ah and a living from her husband, but it is different from being practiced in a religious court whose husband is burdened with giving mut '  ah and livelihood iddah.  So with the existence of these problems the author will review the judges' considerations in considering their decisions and reviewing Islamic law. This study aims to find out about the definition of Mut'ah, the livelihood of iddah and apostasy, to find out the legal basis used by the judge in deciding cases and what according to the views viewed from Islamic law.To answer these three problems, the researcher used a qualitative approach with field research that collected data directly from the source.  In qualitative research, the researcher is faced directly with the respondent, namely a direct interview by the Judge in the Nganjuk Religious Court.Based on the research, even though the husband apostatized and married the husband was still obliged to give mut'ah and livelihood because even though the apostate's husband would not obstruct the husband's obligation to his wife, and the divorce divorce case was equated with ordinary divorce divorce.  Judges use the basis of article 149, 117, with reasons for divorce article 116 letter (f) and (h) KHI (Compilation of Islamic Law) and the results of RAKERNAS MARI in 2005. and viewed from a review of Islamic law judges use volcanic jurisprudence II if  the termination of marriage because of apostasy does not require a court decision or judge's decision and is immediately canceled and does not see the consequences of the apostasy. 
Hak dan Kewajiban Advokat Lubis, Fauziah; Gymnastiar, Wahyu; Fitriani, Rika; Tanjung, M Fadli; Pulungan, Riziq Ahmad; Hakim, Amrin; Situmorang, M Rizqi
Jurnal Pendidikan Tambusai Vol. 9 No. 1 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

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

Abstract

Artikel ini membahas hak dan kewajiban profesi advokat dalam konteks sistem hukum di Indonesia. Advokat memainkan peran krusial sebagai perwakilan hukum yang bertanggung jawab untuk membela hak-hak klien serta menjaga keadilan dalam proses peradilan. Hak advokat mencakup akses terhadap informasi yang relevan, perlindungan dari tekanan eksternal, serta hak untuk berkomunikasi secara bebas dengan klien. Di sisi lain, kewajiban advokat meliputi menjaga kerahasiaan informasi klien, memberikan nasihat hukum yang akurat, dan bertindak dengan itikad baik. Penelitian ini juga mengidentifikasi tantangan yang dihadapi advokat dalam menjalankan hak dan kewajiban mereka, termasuk konflik kepentingan dan praktik hukum yang tidak etis. Dengan pemahaman yang mendalam mengenai hak dan kewajiban ini, diharapkan advokat dapat lebih efektif dalam menjalankan profesi mereka dan berkontribusi pada sistem peradilan yang lebih adil. Artikel ini menggunakan pendekatan kualitatif dengan analisis dokumen dan wawancara terhadap praktisi hukum untuk mendapatkan wawasan yang lebih mendalam mengenai dinamika profesi advokat di Indonesia.
PENGEMBANGAN MEDIA PEMBELAJARAN TUTORIAL BAHASA INGGRIS UNTUK PERWIRA DEK POLITEKNIK PELAYARAN SURABAYA Rika Fitriani
Jurnal 7 Samudra Vol. 9 No. 2 (2024): Jurnal 7 Samudra
Publisher : PPPM - POLITEKNIK PELAYARAN SURABAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54992/7samudra.v9i2.312

Abstract

Paradigma baru pembelajaran formal membawa konsekuensi pada perubahan peran dan fungsi pendidik dalam proses pembelajaran. Sebagai fasilitator pendidik harus mampu menciptakan proses belajar yang  efekif. Proses pembelajaran terdiri dari beberapa komponen, seperti peserta diklat, pendidik, situasi belajar, materi pembelajaran, metode, dan media pembelajaran. Media pembelajaran dapat membantu pendidik memperkaya wawasan peserta diklat. Berbagai bentuk media pembelajaran yang digunakan oleh pendidik akan menjadi sumber ilmu pengetahuan bagi peserta diklat. Untuk itu pendidik harus terampil dan kreatif menggunakan serta mengembangkan media pembelajaran. Penelitian ini bertujuan untuk Mengembangkan Aplikasi Multimedia, khususnya Tutorial Bahasa Inggris untuk perwira dek. Pembelajaran ini seharusnya mendorong seluruh kemampuan untuk memahami keseluruhan sumber informasi dari CD-ROM untuk mengembangkan tutorial. Pembelajaran ini berpusat pada bagaimana peserta diklat dapat mengembangkan aplikasi tutorial bahasa inggris mengikuti perintah dalam CD-ROM. Setiap materi diberikan perintah bertahap untuk membuat tugas tertentu. Peserta diklat bisa mengikuti tutorial dari awal sampai akhir, atau hanya mengerjakan materi yang sesuai dengan keinginan dan motivasi. Setiap materi mencakup animasi, teks dan video yang menggambarkan pergerakan kursor dengan narasi dalam praktik bahasa inggris. Penelitian ini terdiri dari 7 tahapan seperti penelitian dan pengumpulan data, perencanaan, pembuatan produk awal, uji coba pertama, dan revisi produk siap pakai.  Pokok dari penelitian ini ialah komunikasi visual dan ahli komputer dalam uji coba  awal peserta diklat di POLTEKPEL Surabaya sebagai implementasi dari revisi pertama. Informasi telah dianalisa menggunakan metode analisa deskriptif dan diterjemahkan dalam pernyataan berdasarkan temuan hasil penelitian. Berdasarkan dari informasi proses dan kompetensi produk diambil dari uji coba, 96,6% peserta diklat mampu dalam praktik aplikasi tutorial bahas inggris. Hasil menunjukkan bahwa peserta diklat mengalami peningkatan kemampuan untuk mempraktikkan aplikasi tutorial bahasa inggris dengan menggunakan perintah dari CD-ROM.
Pengaruh Media Pembelajaran Interaktif terhadap Retensi Siswa UPT SD Negeri Sinar Mulyo Fitriani, Rika; Prasetyo, Krisno Budi
Cokroaminoto Journal of Primary Education Vol. 8 No. 2 (2025): April - Juni 2025
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/cjpe.8.2.2025.5598

Abstract

Urgensi dalam penelitian ini yaitu rendahnya kemampuan retensi siswa sekolah dasar dalam memahami materi pelajaran, khususnya tema Be on Time, sehingga perlunya inovasi media pembelajaran yang interaktif dan sesuai dengan karakteristik anak. Penelitian ini bertujuan untuk menganalisis pengaruh media pembelajaran interaktif berupa kartu edukatif terhadap kemampuan retensi siswa kelas IV di UPT SD Negeri Sinar Mulyo. Penelitian ini menggunakan pendekatan kuantitatif dengan desain pre-experimental tipe One-Group Pretest-Posttest Design. Sampel penelitian sebanyak 23 siswa kelas IV diambil menggunakan teknik sampling jenuh, yaitu seluruh populasi dijadikan sampel karena jumlahnya terbatas. Data dikumpulkan melalui tes, observasi, wawancara, dan dokumentasi, serta dianalisis secara deskriptif dan inferensial menggunakan uji normalitas Shapiro-Wilk dan uji paired sample t-test. Hasil penelitian menunjukkan rata-rata nilai pre-test sebesar 52,96 meningkat menjadi 81,52 pada post-test, dengan selisih 28,57 poin. Data berdistribusi normal, ditunjukkan oleh nilai signifikansi pretest (0,922) dan posttest (0,994). Uji paired sample t-test menghasilkan nilai signifikansi (2-tailed) < 0,001, yang menunjukkan adanya pengaruh signifikan penggunaan kartu edukatif terhadap retensi siswa. Hasil temuan ini menyimpulkan bahwa media kartu edukatif efektif dalam meningkatkan kemampuan retensi siswa dalam memahami materi. Penggunaan media ini direkomendasikan sebagai strategi pembelajaran alternatif di sekolah dasar
Peran Uang Dalam Persfektif Ekonomi Islam Fitriani, Rika; Fatimawati, Fitri
Jurnal Ekonomika Dan Bisnis (JEBS) Vol. 4 No. 6 (2024): November - Desember
Publisher : CV. ITTC INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jebs.v4i6.2179

Abstract

This research aims to understand the role of money in the perspective of conventional economics and Islamic economics, using qualitative research methods. This research explores the concept of money as a legal medium of exchange and its function in people's lives. In a conventional economic perspective, money is seen as the main medium for carrying out transactions, a store of value, and a tool for measuring the value of goods and services. However, in Islamic economics, the concept of money is not only seen from its function as a medium of exchange, but also from an ethical and moral perspective, where the use of money must be in accordance with sharia principles, including the prohibition of usury and an emphasis on social justice. This research found that the role of money in people's lives is very important, both in conventional and Islamic economics. However, in Islamic economics, money should not be the final goal, but rather a means to achieve just social and economic prosperity. Money must be used to support sustainable economic growth and a more equitable distribution of wealth, in accordance with the values ​​of justice and benefit in Islam. In conclusion, the role of money in the Islamic economy has a broader dimension than just a means of exchange, because it also takes into account moral and social aspects.
Identifikasi Kinerja Fresh Water Maker Reverse Osmosis Untuk Memenuhi Kebutuhan Air Tawar Di Kapal CTS. Bulk Java Anam, Choirul; Prawoto, Agus; Fitriani, Rika; Nugroho, Aziz; Kristiyono, Antonius Edy
Impression : Jurnal Teknologi dan Informasi Vol. 4 No. 2 (2025): July 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jti.v4i2.980

Abstract

Penelitian ini bertujuan untuk mengidentifikasi penyebab tidak optimalnya kinerja Fresh Water Maker (FWM) berteknologi Reverse Osmosis (RO) di kapal CTS. Bulk Java, serta dampaknya terhadap operasional kapal. Metode yang digunakan adalah pendekatan deskriptif kualitatif melalui observasi langsung, wawancara dengan engineer kapal, dan dokumentasi sistem. Hasil penelitian menunjukkan bahwa penurunan produksi air tawar dari 1.000 L/jam menjadi 800 L/jam disebabkan oleh kerusakan pada mechanical seal feed pump, umur filter yang telah melebihi batas kerja, serta kebocoran pada pipa membran. Kondisi ini berdampak pada kebutuhan harian kru kapal dan menambah biaya operasional karena perlunya pengisian air tawar dari darat. Upaya perbaikan mencakup penggantian komponen rusak seperti impeller, filter, dan perbaikan pipa. Setelah overhaul, FWM kembali beroperasi optimal. Penelitian ini merekomendasikan inspeksi dan perawatan berkala untuk menjaga kinerja sistem FWM RO secara berkelanjutan.   This study aims to identify the causes of the suboptimal performance of the Reverse Osmosis-based Fresh Water Maker (FWM) system on the CTS. Bulk Java ship and its impact on ship operations. The research uses a qualitative descriptive method through direct observation, interviews with ship engineers, and system documentation. The findings show that the decline in freshwater production from 1,000 L/hour to 800 L/hour was due to damage to the feed pump’s mechanical seal, expired filter life, and leaks in the membrane pipe. This condition disrupted crew water supply and increased operational costs due to the need for freshwater bunkering from the shore. Repairs included replacing damaged components such as the impeller and filters, and repairing the leaking pipe. After the overhaul, the FWM resumed optimal performance. The study recommends routine inspection and maintenance to sustain the reliability of the FWM RO system  
Feasibility Study of the Utilization of Water in the Seruyan River Watershed in Kuala Pembuang, Seruyan Regency, Central Kalimantan Rika Fitriani; Ukik Agustina
Indonesian Journal of Nutritional Epidemiology and Reproductive Vol. 8 No. 3 (2025): September
Publisher : Universitas STRADA Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30994/ijner.v8i3.350

Abstract

River water is one of the main sources of community needs in rural areas, including in Seruyan Regency. This study aims to assess the feasibility of utilizing water from the Seruyan River Basin (DAS) for public health. The research method uses a qualitative approach with data triangulation and water pollution index analysis based on environmental quality standards. Data were obtained from field observations, documentation studies, and in-depth interviews with residents, community health center officers, village officials, and environmental agencies. The results show that the water pollution index of the Seruyan River Basin is in the light to moderate pollution category, with water quality not yet fully meeting quality standards for household clean water needs. Residents still use river water for bathing, washing, and daily activities, despite frequent complaints of skin problems and digestive disorders. Interviews with health workers confirmed that skin disease complaints are quite high in the riverbank area. It was concluded that the use of Seruyan River water is unsuitable for direct consumption without treatment. Improvements in water quality management, public education, and local government policies regarding clean water provision are recommended.
Co-Authors Abdul Aziz Aditya Rahman Aziz Nugroho Bangkit Risang Nugroho Choirul Anam AM Diponegoro Edi Kurniawan Fatimawati, Fitri Gymnastiar, Wahyu Hakim, Amrin Kristiyono, Antonius Edy Lubis, Fauziah Muhammad Subianto Nugraha, Ruth Cornelia Prasetyo, Krisno Budi Prawoto, Agus Pulungan, Riziq Ahmad S.Pd. M Kes I Ketut Sudiana . Situmorang, M Rizqi Tanjung, M Fadli Ukik Agustina Usman Usman