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All Journal Jurnal Teknik Mesin Jurnal JSIKA The Indonesian Accounting Review Acta Aquatica: Aquatic Sciences Journal Pendas : Jurnah Ilmiah Pendidikan Dasar Jurnal Ilmiah Sosiologi Agama (JISA) Jurnal Ilmu Fisika Jurnal Sains Riset Community Engagement and Emergence Journal (CEEJ) Majalah Ilmiah Matematika dan Statistika (MIMS) Lingua Rima: Jurnal Pendidikan Bahasa dan Sastra Indonesia Jurnal Abdimas Ilmiah Citra Bakti (JAICB) Edunomia : Jurnal Ilmiah Pendidikan Ekonomi JUSTIN (Jurnal Sistem dan Teknologi Informasi) J.Pelastek IJCOSIN : Indonesian Journal of Community Service and Innovation MASALIQ: Jurnal Pendidikan dan Sains Asas wa Tandhim: Jurnal Hukum, Pendidikan, dan Sosial Keagamaan Jurnal Pandu Husada Jurnal Ilmiah Fisioterapi Muhammadiyah Jurnal Kajian Stratejik Ketahanan Nasional Future Academia : The Journal of Multidisciplinary Research on Scientific and Advanced KIC Seminar Nasional Riset dan Teknologi (SEMNAS RISTEK) Jurnal Laboratorium Sains Terapan
Rizky Kurniawan
STIE Perbanas Surabaya
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PERANCANGAN APLIKASI PENGOLAHAN DATA PROYEK PERUSAHAAN KONTRAKTOR GUNASLAND BEKASI BERBASIS JAVA NETBEANS Kurniawan, Rizky; Destiawati, Fitriana; Vandini, Intan
Semnas Ristek (Seminar Nasional Riset dan Inovasi Teknologi) Vol 6, No 1 (2022): SEMNAS RISTEK 2022
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/semnasristek.v6i1.5811

Abstract

Gunasland Bekasi adalah perusahaan didalam bidang kontraktor dalam pengembangan real estate yang beroperasi di Jakarta, Bekasi dan Jambi. Gunasland Bekasi juga memberikan penekanan kuat pada kehidupan rumah ramah lingkungan dengan terus meninjau tren dan teknologi baru dalam pengemabangan pembangunan hijau. Sebagai bagian dari apresiasi terhadap budaya Indonesia. Gunasland Bekasi sendiri belum memiliki aplikasi pengolahan data yang mana dalam pencarian datanya berupa file berkas dan proses laporan masih berupa dokumen. Tujuan penelitian ini dilakukan adalah untuk mengatasi sistem pengolahan data proyek yang ada, dimana sistem yang digunakan masih ada kekurangan dan belum optimal dan juga untuk merancang sebuah aplikasi yang dapat mempermudah segala sesuatu yang berhubungan dengan pengolahan data proyek perusahaan dan agar atasan dapat mengakses langsung data pada aplikasi, Seperti mudah hilang dan sulitnya dalam pencarian data. Metode penelitian yang digunakan adalah metode deskriptif Dapat dikatakan bahwa penelitian deskriptif merupakan penelitian yang berusaha mendeskripsikan suatu gejala, peristiwa yang terjadi pada saat sekarang atau masalah aktual. Berdasarkan metode tersebut pengumpulan data yang dilakukan memperoleh hasil data yang akurat. Hasil dari penelitian ini adalah sebuah aplikasi sistem informasi pengolahan data proyek yang sudah terkomputerisasi agar membuat pekerjaan menjadi lebih efektif lagi, terdata lebih baik dan tersimpan lebih aman.Kata Kunci: Perancangan, Pengolahan Data Proyek, Berbasis Java Netbeans
Perbandingan penerapan optimasi SGDM dan Adam pada model CNN dengan arsitektur VGG19 dan ResNet-50 dalam memprediksi penyakit paru-paru pneumonia Oktarina, Sachnaz Desta; Alpharofi, Deswita Nur; Hasanah, Delita Nur; Kurniawan, Rizky; Muzakki, Faiz Aji; Najdmuddin, Muhammad Tsaqif; Anisa, Rahma
Majalah Ilmiah Matematika dan Statistika Vol. 25 No. 2 (2025): Majalah Ilmiah Matematika dan Statistika
Publisher : Jurusan Matematika FMIPA Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/mims.v25i2.53746

Abstract

Pneumonia is a leading cause of death among children under five, accounting for 14% of fatalities. Chest X-ray analysis is a key method for diagnosis, but many developing countries have only one radiologist per million people, making timely detection difficult. To address this challenge, Convolutional Neural Networks (CNN) offer a viable solution due to their ability to analyze visual data efficiently. This study evaluates two CNN architectures, VGG19 and ResNet-50, considering their effectiveness in pneumonia detection. Both models were trained using two different optimizers, SGDM and Adam, to determine the best combination for accurate classification. Results using test data indicate that VGG19 with the Adam optimizer achieves the highest accuracy at 90%, surpassing other models which recorded 62%, 77%, and 84% without overfitting. This highlights the potential of artificial intelligence driven diagnostic tools in bridging healthcare gaps and improving pneumonia detection in resource-limited settings. Keywords: Classification, CNN, Optimizer, PneumoniaMSC2020: 62
Karakterisasi Silikon dari Sekam Padi Terdoping dengan Kobalt: Analisis Struktur dan Sifat Magnetoelektrik Kurniawan, Rizky; Andriayani, Andriayani; Gea, Saharman; Kurniawan, Hadi
Jurnal Ilmu Fisika Vol 16 No 2 (2024): September 2024
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.16.2.97-106.2024

Abstract

The development of Si-based materials has attracted increasing attention, particularly for application in semiconductors, batteries, sensors, and optical technology. Silicon has abundant availability, high energy storage capacity, and low work potential. However, it faces compatibility challenges due to its low electrical conductivity and extremely small magnetic susceptibility. This research aimed to investigate the influence of Co dopants on the structure, morphology, electrical conductivity, and magnetic susceptibility of silicon. Silicon was synthesized using the magnesiothermic reduction method, and silicon was modified with Co metal dopants at 0.1% and 0.5% concentrations through the impregnation method. XRD analysis results showed that Si, 0.1% Co/Si, and 0.5% Co/Si exhibit silicon diffraction patterns at 2θ = 28.42º; 47.28º; 56.11º; 69.13º; and 76.36º. The morphology of Si and Co/Si revealed a rough, uneven, and porous surface with particles appearing spherical. Electrical conductivity increases with Co concentration: Si = 1223 µS/cm, 0.1% Co/Si= 1376 µS/cm, and 0.5% Co/Si= 1529 µS/cm. Magnetic susceptibility measurements indicated that Si, 0.1% Co/Si, and 0.5% Co/Si are paramagnetic at a range of 1.18 x10-6 to 1.25 x10-5 SI. These characterization results confirmed that the modification with Co dopants can enhance the magnetoelectric properties of silicon.
TELAAH PEMANFAATAN SOFTWARE AKUNTANSI OLEH USAHA KECIL DAN MENENGAH Kurniawan, Rizky; Diptyana, Pepie
The Indonesian Accounting Review Vol. 1 No. 2 (2011): TIAR - July 2011
Publisher : Universitas Hayam Wuruk Perbanas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14414/tiar.v1i02.324

Abstract

It has been noted that high transaction frequency has occurred in Small and Medium Enterprises (SMEs). It is also not easy for them to record the transactions. Previous studies show that utilization of accounting software in SMEs is required for increasing both timely and accurately in financial statement. This study aims to determine the factors that affect SEMs’ accounting software selection. The data were collected from 45 SMEs in Surabaya and Sidoarjo and then they were tested using logistic regression. It is expected to explore whether price, performance, stability, flexibility,  implementing, customization and vendor support in utilization through three groups of time range of decision: nowadays, next five years and next ten years. Despite, this research has failed to support the hypotheses. It was found that modified Microsoft excel is an accounting application which is, in fact, mostly used by SMEs. Accounting software utilization is used for supporting operation  function, but not for strategic function. It is assumed, however, that this study has limited respondents. Therefore, further research should get more respondents and propose more robust predictor of decision for f using accounting software.
Effectiveness of Spirulina platensis as a bioremediator candidate for vaname shrimp (Litopenaeus vannamei) wastewater Hartami, Prama; Mauliyani, Mauliyani; Erniati, Erniati; Masyithah, Putri; Kurniawan, Rizky; Suhaila, Nurul; Muliani, Muliani; Rusydi, Rachmawati
Acta Aquatica: Aquatic Sciences Journal Acta Aquatica: Jurnal Ilmu Perairan, Vol. 9: No. 1 (April, 2022)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/aa.v9i1.6992

Abstract

The purpose of this study was to determine the effectiveness of Spirulina platensis for remediation of vannamei shrimp culture waste. The method used in this study was a Non-Factoral Completely Randomized Design (CRD) with 4 treatments and 3 replications, namely (A) Control; (B) 50% waste (1500 ml waste + 1500 ml water) + technical fertilizer + Spirulina inoculant; (C) 75% waste (2,250 ml of waste + 750 ml of water) technical fertilizer + Spirulina inoculant; (D) 100% waste + technical fertilizer + Spirulina inoculant. Data analysis used ANOVA with 95% confidence level. The results showed that the use of Spirulina platensis as a remediation agent for vaname shrimp culture had a significant effect on reducing levels of waste ammonia, phosphate, nitrate, and density of Spirulina platensis (Fcount > Ftable 0.05).Keywords: Bioremediator; Innoculant; Vanname shrimp; Waste water
PENGEMBANGAN MEDIA TRUTH OR DARE BERBASIS BOARD GAME NATURE ADVENTURE PEMBELAJARAN IPAS PESERA DIDIK KELAS III SD NEGERI 7 KAMPUNGDALEM Kurniawan, Rizky; Satria, Aditya Pringga
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 3 (2025): Volume 10 No3 September, 2025
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i3.29755

Abstract

Low active engagement in learning is a challenge in the lower grades of primary school. Grade III students are still at the concrete thinking stage, so they are more interested in fun activities and are easily distracted by less interactive media or the use of devices such as gadgets. This research aims to development Truth or Dare learning media based on Board Game themed Nature Adventure on the material of natural appearance using the developer model applied using the Teams Games Tournament (TGT) approach which emphasizes group cooperation, healthy competition, and active involvement of students through a fun and not boring learning atmosphere. The results of validation carried out by media, material, and language experts, showed that the media obtained a validity score of 90.5% for media, 96% for material, and 94% for language, all of which were in the very valid category. The applicability test was conducted through a questionnaire distributed to teachers and third grade students at SD Negeri 7 Kampungdalem. The results showed an applicability of 98.1% from teachers and an average of 92.1% from students. The results of the field trial prove that this media is able to increase the enthusiasm, motivation, and active involvement of students during learning in the classroom.
Verifikasi Metode Uji Fenat dalam Penentuan Kadar Amonia di Air Sungai: Verification of the Phenate Method for Ammonia Determination in River Water Kurniawan, Rizky; Fauzi, Masyithah; Irhamni; Kurniawan, Hadi
JURNAL PENGELOLAAN LABORATORIUM SAINS DAN TEKNOLOGI Vol 5 No 2 (2025): November 2025
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pelastek.v5i2.44644

Abstract

Verifikasi metode analisis merupakan tahap penting untuk memastikan keandalan suatu prosedur dalam menentukan parameter kualitas air. Penelitian ini bertujuan untuk melakukan verifikasi metode uji kadar amonia menggunakan metode fenat pada sampel air sungai. Parameter yang diuji meliputi linearitas, akurasi, presisi, serta sensitivitas. Hasil uji linearitas menunjukkan koefisien korelasi (r) sebesar 0,9947 yang memenuhi persyaratan r ≥ 0,97. Uji akurasi menghasilkan nilai % recovery sebesar 99,07%, berada dalam rentang penerimaan 85–115%. Presisi metode ditunjukkan dengan nilai %RSD sebesar 2,36% yang masih memenuhi kriteria batas keberterimaan <5% dan 0,67 CV Horwitz. Sensitivitas ditunjukkan oleh nilai batas deteksi (MDL) sebesar 0,0255 mg/L dan batas kuantisasi (LOQ) sebesar 0,0812 mg/L, keduanya lebih rendah dari baku mutu amonia pada air sungai kelas I (0,1 mg/L) sesuai dengan Peraturan Pemerintah RI No. 22 Tahun 2021. Hasil verifikasi ini menegaskan bahwa metode fenat layak digunakan untuk analisis kadar amonia pada air sungai karena memenuhi semua kriteria keberterimaan yang berlaku.
PENERAPAN METODE SPEKTROFOTOMETRI UV-VIS PADA ANALISIS KADAR BESI (Fe) DALAM SUPLEMEN TAMBAH DARAH SEBAGAI MEDIA PEMBELAJARAN PRAKTIKUM Kurniawan, Rizky; Mauliza, Nizar; Mahmudi; Kurniawan, Hadi
Laboratory Journal : Jurnal Laboratorium Sains Terapan Vol. 2 No. 2 (2025): Desember
Publisher : Unib Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/jlst.2.2.1-7

Abstract

Analisis kadar besi (Fe) pada suplemen tambah darah merupakan langkah penting dalam menjamin mutu dan efektivitas produk farmasi, sekaligus sarana pembelajaran keterampilan analitik mahasiswa. Penelitian ini bertujuan menerapkan metode spektrofotometri UV-Vis untuk analisis kadar besi (Fe) pada suplemen tambah darah serta mengevaluasi efektivitasnya sebagai media pembelajaran praktikum kimia analisis farmasi. Preparasi sampel dilakukan dengan metode destruksi asam menggunakan microwave digestion, diikuti reaksi kompleksasi Fe³⁺ dengan kalium tiosianat (KSCN) dalam suasana asam untuk membentuk kompleks Fe(SCN)3 berwarna merah. Pengukuran dilakukan pada panjang gelombang maksimum 474 nm. Kurva kalibrasi standar menunjukkan linearitas sangat baik (r = 0,997), sedangkan uji akurasi menghasilkan perolehan kembali 97,5% dengan presisi tinggi (%RSD < 0,1%). Metode ini terbukti akurat dan reliabel untuk penentuan kadar Fe, serta efektif sebagai sarana pembelajaran kontekstual yang mengintegrasikan teori kompleksasi logam, prinsip spektrofotometri, dan verifikasi metode analitik dalam praktikum kimia analisis farmasi.
Consumer Perspective On Osyin Glow Marketed Through Tiktok Shop Kurniawan, Rizky; Hakimah, Ema Nurzainul
Proceeding Kilisuci International Conference on Economic & Business Vol. 3 (2025): Proceeding Kilisuci International Conference on Economic and Business
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/kscy4598

Abstract

The purpose of the study: this study aims to find out how consumers view Osyin Glow products marketed through TikTok Shop, including their perception of product quality, price, and value. Design/Method/Approach: This study applies a qualitative method with a phenomenological approach, using thematic analysis techniques. This collection was carried out using triangulation techniques, which involved interviews with two customers on the TikTok Shop Osyin Glow account who had shopping experience and were willing to be interviewed. The selection of informants meets the requirements of relevance, recommendation, relationship, readiness, and assurance. The validity is tested by triangulation techniques. Research Findings: Research shows that the quality of Osyin Glow products has a significant positive effect on consumer buying interest on TikTok Shop. Consumers tend to be more interested in buying products that they consider to be of good quality. Theoretical contribution/Originality: This research has originality because it focuses on a specific product, namely Osyin Glow, which is marketed through TikTok Shop. This provides a new perspective in understanding how beauty products compete in a highly competitive digital market. Practitioner/Policy Implications: This research that TikTok Shop Osyin Glow improves customer satisfaction, it is important for Osyin Glow to ensure good service quality, including quick response to consumer inquiries and complaints, as well as ease in the purchase process. Research limitations: these limitations suggest that while the research provides valuable insights into consumers' perspectives on Osyin Glow on TikTok Shop, there are several aspects that need to be considered for future research in order for the results to be more comprehensive and representative.
Co-Authors Abdullah, Khabib Abidin Pasaribu, Abidin AGUNG PRIJO BUDIJONO Agus Dwi Churniawan, Agus Dwi Alpharofi, Deswita Nur Ananda, Shafira Putri Andriayani Angela, Vivi Friskila Anisa, Rahma Arafiq, Mutiara Firdaus Ars, M. Ghufroni An Atem Atem Atik Swandari, Atik Awaludin, Muhammad Tata Azahrah, Tiara Bayuaji, Werdy Satrio Cakra Waritsu Chandra, Ratna Dwi Devi Wulandari Dewi, Fitranaya Arlian Cintaya Elfa Wirdani Fitri, Elfa Wirdani Ema Nurzainul Hakimah, Ema Nurzainul Erniati Erniati Fadilah, Jasmine Faradila, Alya Fauzi, Masyithah Fitriana Destiawati Fitriana Destiawati Gerhanawati, Ifa Hadi Kurniawan, Hadi Hasanah, Delita Nur Hidayat Hidayat Huda, Irkham Irenta Irhamni Jusak Jusak Ken Siwi Kistiono MAHMUDI Mansyah, Alika Martin S, Yosia Masyithah, Putri Mauliyani, Mauliyani Mauliza, Nizar Milhan Milhan, Milhan Monalisa, Devi Muhamad Yusup Muhammad Zusanri Batubara Muliani Muliani, Muliani Muzakki, Faiz Aji Nadiya Najdmuddin, Muhammad Tsaqif Nanang Dwi Ardi Nurcahya, Eka Nursiam, Nursiam Nurul Latifasari Pepie Diptyana Pradana, Cerry Surya Prama Hartami Putri, Fadma Putri, Nuraini Qadhli Jafar Adrian Rachmawati Rusydi, Rachmawati Rahayu, Masnia Rahmayanti, Yuni Ramadita, Salsabil Fardha Rivando, Boy Romadhona, Nurul Faj'ri Ruliyanti, Try Sachnaz Desta Oktarina Saharman Gea Salsa Bilah, Al Haya Nurjanah Afifah Santoso, Yonatan Ari Sari, Dwi Resta Maulita Satria, Aditya Pringga Septiani, Fauziah Bunga Septyapramudita, Hanif Wafi Sholekhah, Irmadatus Simbolon, Wahyu Sugiyono, Arief Febriansyah Suhaila, Nurul Triyatno Triyatno Vandini, Intan Wibisono, Muhammad Rizqi Yeni, Alfitri Yenita . Zain, M. Yanuardi