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All Journal Solah REKAYASA Jurnal Kelautan Tropis The Spirit of Society Journal : International Journal of Society Development and Engagement Journal of Tropical Horticulture Jurnal Menssana INTEGRITAS : Jurnal Pengabdian Jurnal Chart Datum Journal of Electrical Vocational Education and Technology Islamic Economics and finance in Focus (IEFF)
Choirul Umam, Choirul
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Physics Social Sciences Other

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KARYA MUSIK “SEPARATIS OVERTURE” DALAM TINJAUAN VARIASI MELODI UMAM, CHOIRUL
Solah Vol 6, No 2 (2016):
Publisher : Solah

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

Abstract

Analisa Karakteristik Pasang Surut Berdasarkan Panjang Data Pengamatan di Perairan Makassar : Analysis of Tidal Characteristics Based on The Length of Observation Data in Makassar Coastal Waters umam, choirul; Pranowo, Widodo Setiyo; Adrianto, Dian; Rahmatullah, Amri; Aji, Tri
Jurnal Chart Datum Vol. 9 No. 2 (2023): Jurnal Chart Datum
Publisher : Sekolah Tinggi Teknologi Angkatan Laut (STTAL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/chartdatum.v9i2.149

Abstract

Indonesia adalah negara kepulauan terbesar di dunia yang berdasarkan data rujukan nasional memiliki luas 8,3 juta km2, terdiri dari 17.504 pulau, 1,9 juta km2 daratan, dan 6,4 juta km2 lautan. Salah satu informasi penting yang terkait dengan laut adalah data pasang surut air laut (Pasut). Badan Informasi Geospasial (BIG) sampai saat ini sudah membangun dan mengelola 216 stasiun pasang surut di seluruh Indonesia. Salah satu lokasi stasiun pasang surut adalah di Makassar di Dermaga Lantamal VI Makassar. Keberadaaan stasiun pasang surut air laut di Makassar sangat penting, terutama bagi kapal-kapal yang keluar dan masuk pelabuhan Makassar dan masyarakat sekitar, karena di wilayah tersebut termasuk area dengan kedalaman laut dangkal. Penelitian ini bertujuan mengetahui karakteristik pasang surut laut di Makassar yang diperoleh berdasarkan data tahun 2017-2021. Proses pengolahan data mengggunakan perangkat lunak T-tide yang menggunakan metode Least Square dalam perhitungannya. Hasil penelitian membuktikan bahwa rata-rata nilai HHWS, MSL, dan LLWS adalah 1.83, 1.19, 0.47 dalam satuan m (meter) yang ber-referensi ke palem pasut, sehingga ini adalah nilai muka laut yang lokal di Stasiun Makassar. Kemudian dari perhitungan bilangan Formzahl di stasiun pasang surut Makassar diperoleh nilai 1.07 – 3.06, dengan rata-rata bilangan formzahl 2.10, hal ini menjadi bukti bahwa tipe pasang surut Staisun Makassar adalah pasang surut campuran condong ke harian tunggal.
Application of Dynamic Systems to Model Increasing Profitability of UMKM Production in the “SENTRA IKAN BULAK” Suyono, Joko; Rahmat, M. Basuki; Mudjanarko, Sri Wiwoho; Fadilah, Eka; Artaya, I Putu; Bahaswan, Rizal; Alie, R.M. Mahrus; Indartono, Arie; Syaiful, Syaiful; Alviansyah, M. Khakim; Umam, Choirul
THE SPIRIT OF SOCIETY JOURNAL : International Journal of Society Development and Engagement Vol 8 No 1: September 2024
Publisher : LPPM of NAROTAMA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/scj.v8i1.2958

Abstract

The growth of UMKM in various sectors has triggered intense competition between these business actors. One of them is the craft sector. The use of social media is expected to boost turnover, but the benefits are still lacking. In the craft sector, the problem that arises on the MSME side is the cessation of production. This causes turnover to decrease and has an impact on decreasing profits. This dynamic system modeling is used to see how profit-increasing strategies can be carried out. Based on the dynamic system, there are several variables, namely the causal loop diagram (CLD) and the Stock Flow Diagram (SFD) that are built, there are 3 scenarios in increasing production profits, namely: increasing production, reducing the cost of tools and materials and the third is both taken simultaneously. From the simulation carried out, it was found that within a period of 12 months it was seen that increasing production by reducing the cost of tools and materials could increase sales so that income increased and profits increased. A process of identifying production process change variables is needed as one of the production process variables that was stopped.
Keaktifan Indera, Akal, Ingatan, Dan Emosi Atlet Sepakbola Dalam Mengikuti Latihan Di Masa New Normal Atiq, Ahmad; Umam, Choirul; Maksum, Hendri
Jurnal MensSana Vol 6 No 1 (2021): Jurnal MensSana
Publisher : Pusat Kajian Pendidikan Olahraga, Kesehatan, dan Rekreasi Jurusan Pendidikan Olahraga Fakultas Ilmu Keolahragaan Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/MensSana.06012021.17

Abstract

Tujuan dari penelitian adalah untuk mengetahui keaktifan indera, keaktifan akal, keaktifan ingatan, dan keaktifan emosi atlet dalam mengikuti latihan sepak bola di masa new normal. Metode yang digunakan dalam penelitian ini menggunakan bentuk penelitian survei. Pengumpulan data dalam penelitian ini menggunakan angket. Penelitian ini menggunakan skala Likert. Populasi dalam penelitian ini adalah seluruh atlet sepak bola di Pontianak berjumlah 97 orang. Sampel yang digunakan total sampling yang berjumlah 97 orang. Langkah analisis dan mengolah data yaitu Editing, Klasifikasi, Tabulasi, Skala, Mempersentasekan data, Menyimpulkan hasil penelitian. Berdasarkan hasil penelitian dapat disimpulkan bahwa tingkat keaktifan atlet dalam mengikuti latihan sepak bola di masa new normal tergolong pada tiga klasifikasi yaitu sangat baik sebesar 44,3%, baik sebesar 52,6% dan cukup sebesar 3,1%. Sedangkan jumlah pengelompokan skor keseluruhan dari semua atlet termasuk dalam klasifikasi baik yaitu sebesar 52,6%.
The Study of Early Selection Method through Vigor and Viability Parameter in Citrus amblycarpa (Hassk) under Salinity and Drought Stress Condition Nindita, Anggi; Umam, Choirul; Fatimah, Siti; Suwarno, Faiza
Journal of Tropical Horticulture Vol 1, No 1 (2018): October 2018
Publisher : Yayasan Pertanian Tropika Indonesia (YPTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1505.466 KB) | DOI: 10.33089/jthort.v1i1.4

Abstract

The study was aimed to obtain information regarding the early selection method of Limau lime under saline and drought condition including the proper method for seed extraction, observation period in germination testing, and type of germination media. The experiment was conducted from March 2015 to January 2016 at the Laboratory of Seed Science and Technology, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University. It consisted of four main experiments. The first experiment was the extraction method on Limaulime seed using distilled water, ash from the husk, talcum powder, and HCl 1%. The second experiment was germination testing of lime seed using three media i.e. sand, the combination of sand: soil (1:1) (v:v), and towel tissue. The third experiment has tested the vigor of Limau lime seeds in different saline conditions by using NaCl, i.e. 1500 ppm, 3000 ppm, and 4500 ppm. The fourth experiment, tested the vigor of Limau lime seeds in drought stress condition using PEG 6000, i.e. 0, - 0.75 bar, -1.5 bar, and -2.25 bar. The result of the first experiment showed that the treatments had no significantly different effect on all variables observed except for the seed moisture content. The second experiment revealed that the best germination media was elucidated from sand treatment and sand: soil (1:1) with the first and the second count at 20th and 29th day respectively. The result of the third and four experiment elucidated that the higher concentration of NaCl (Salinity stress condition) or PEG 6000 (drought stress condition), the smaller the germination percentage of Limau Lime’s seeds.
FAKTOR-FAKTOR YANG MEMENGARUHI KEPUTUSAN MENJADI INVESTOR BARU SAHAM SYARIAH Umam, Choirul; Aminullah Achmad Muttaqin
Islamic Economics and finance in Focus Vol. 3 No. 2 (2024)
Publisher : Fakultas Ekonomi dan Bisnis Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ieff.2024.03.02.11

Abstract

This study aims to find out what factors influence the decision to invest and become an investor in Islamic stocks during the Covid-19 pandemic. This study uses a quantitative approach with exploratory factor analysis method. The sampling method used was non-probability sampling with a purposive sampling technique with 105 samples obtained by distributing questionnaires to respondents who met the research criteria online. The results of this study reveal that there is an anomaly in new Islamic stock investors compared to old investors who tend to avoid investing during the Covid-19 pandemic. There are nine factors that influence the decision to invest and become new investors in Islamic stocks during the Covid-19 pandemic. These factors are technological advances, herding behavior, investment motivation, sharia compliance, risk perception, minimum investment capital, basic investment knowledge, avoiding speculation, and technical analysis factors.
Efek Giberelin (GA3) Terhadap Perkecambahan dan Pertumbuhan Cabai Rawit (Capsicum frustescens L.) Syafii, Mohammad; Mawarda, Revina Ade; Umam, Choirul
Rekayasa Vol 17, No 3: Desember, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i3.27902

Abstract

Chilli pepper (Capsicum frutescens L) is an important horticulture in Indonesia. High demand often did not meet the production. One of the leading factors is the quality and bad seed conditions, which affect plant growth and production. This research was conducted from February to May 2024 in the research field and laboratory of Plant Breeding and Biotechnology, Agroecotechnology Study Program, Faculty of Agriculture, University of Trunojoyo Madura. The research aim was to determine the effect of gibberellin concentrations and varieties on the germination and plant growth of chili peppers. Factorial randomized Block Design (RBD) was used in this research with gibberellin as the first factor G0 (0 ppm), G1 (1.07 ppm), G2 (1.10 ppm), G3 (1.23 PPM), and the second factor was varieties including V1 (Bhaskara), V2 (Master), V3 (Viral). The data obtained from this experiment was analyzed with analysis of variance (ANOVA) at a 5% level of confidence, and if there were significant differences, the Duncan multiple range test (DMRT) was performed. This experiment showed that G0 and V1 had the best responses to germination and plant growth compared to the other treatments. Furthermore, this showed that gibberellin, the range of treatments, is still ineffective in increasing the germination ability and the growth of chili peppers.
SOSIALISASI DAN PRAKTIK PERSEMAIAN BUDIDAYA TANAMAN SAYURAN SISTEM HIDROPONIK DI DESA DAKIRING-BANGKALAN Milyani, Jannatin; Putri, Dita Febryanti; Dewanti, Anggelia; Rahmawati, Maulidia Dwi; Rahmadani, Dicky Trilus; Farisi, Salman Al; Umam, Choirul; Wasonowati, Catur
INTEGRITAS : Jurnal Pengabdian Vol 8 No 2 (2024): AGUSTUS - DESEMBER
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat - Universitas Abdurachman Saleh Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/integritas.v8i2.4816

Abstract

Selada merupakan tanaman yang mempunyai potensi besar untuk dibudidayakan di Desa Dakiring, Socah, Bangkalan. Permasalahan yang dihadapi oleh Kelompok tani Maju Makmur yaitu kebutuhan akan sayuran semakin meningkat disetiap tahun sedangkan di desa belum ada yang berbudidaya sayuran. Permasalahan yang terjadi di Desa Dakiring yaitu terkait kurangnya minat masyarakat untuk menanam sayuran karena kondisi lahan yang kering, selain itu juga terdapat permasalahan saat pembibitan tanaman selada dengan persentase perkecambahan biji hanya berkisar antara 40%-75% saja. Hal ini menyebabkan petani kurang tertarik untuk menanam selada. Adanya permasalahan tersebut, tim PPK Ormawa Himagrotek tahun 2024 melakukan kegiatan sosialisasi pengenalan sistem baru berbudidaya tanaman dengan hidroponik dan melakukan praktik penyemaian dengan baik dan benar sehingga dapat memecahkan permasalahan yang ada. Tujuan kegiatan ini untuk memberikan pendampingan serta arahan kepada kelompok tani Desa Dakiring dalam berbudidaya tanaman sayuran khususnya tanaman selada secara hidroponik tanpa menggunakan media tanah serta dapat mengedukasi tentang cara persemaian dengan menerapkan GAP. Hasil kegiatan yang telah dilakukan yaitu masyarakat mendapatkan ilmu baru mengenai pertanian modern serta dapat menerapkan cara persemaian yang baik untuk komoditas sayuran khususnya komoditas selada. Diadakannya praktik secara langsung membantu para kelompok tani lebih paham dan tertarik untuk berbudidaya sayuran.
Analisa Lapisan Termoklin Musiman Di Perairan Indonesia (Studi Kasus Selat Malaka) Hendra, Hendra; Pranowo, Widodo Setiyo; Umam, Choirul; Azhari, Ferian; Agustinus, Agustinus
Jurnal Kelautan Tropis Vol 27, No 1 (2024): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v27i1.20780

Abstract

The Malacca Strait is a strategic waterway for Indonesia as it serves as an international shipping route connecting East Asia with the Middle East and Europe. In addition, the Malacca Strait also has great potential for natural resources, such as oil and gas as well as fish and other marine products. This study aims to describe the Thermocline Layer in the Malacca Strait based on Marine Copernicus Data in 2020 with a depth of up to 1000 meters. The temperature data was visualized using ODV 5.5.2 software. The results of processing the Marine Copernicus Temperature Data in 2020 in the Malacca Strait with a depth of up to 1000 meters show that the thermocline boundary varies each season. In the western season, the thermocline boundary is at a depth between 11 meters to 131 meters, in the first transitional season, it is at a depth between 22 meters to 131 meters, in the eastern season, it is at a depth between 56 meters to 156 meters, and in the second transitional season, it is at a depth between 78 meters to 131 meters. Bagian Selat Malaka adalah perairan yang strategis bagi Indonesia karena menjadi jalur pelayaran internasional yang menghubungkan Asia Timur dengan Timur Tengah dan Eropa. Selain itu, Selat Malaka juga memiliki potensi sumber daya alam yang besar, seperti minyak dan gas bumi serta ikan dan hasil laut lainnya. Penelitian ini bertujuan untuk mengidentifikasi dan menganalisis Lapisan Termoklin di Perairan Selat Malaka berdasarkan Data Marine Copernicus tahun 2020 dengan kedalaman sampai 1000 meter. Data Temperatur diolah dan dianalisis menggunakan software ODV 5.5.2. Hasil pengolahan Data Temperatur Marine Copernicus tahun 2020 di Perairan Selat Malaka dengan kedalaman mencapai 1000 meter dengan batas termoklin setiap musim dimana pada Musim barat batas termoklin berada pada kedalaman antara 11 meter sampai dengan 131 meter, Musim Peralihan I batas termoklin berada pada kedalaman antara 22 meter sampai dengan 131 meter, Musim Timur batas termoklin berada peda kedalaman antara 56 meter sampai dengan 156 meter dan Musim Peralihan II batas termoklin berada pada kedalaman antara 78 meter sampai dengan 131 meter.
Pembuatan Alat Deteksi Peralatan Berharga pada Rental Studio Musik menggunakan Sensor HMC5883l dengan Magnet Neodymium sebagai Tag Umam, Choirul; Rahardjo, Imam Arif; Yuninda, Nur Hanifah
Journal of Electrical Vocational Education and Technology Vol. 7 No. 1 (2024): Journal of Electrical Vocational Education and Technology, Volume 7 Issue 1, Ju
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JEVET.0071.03

Abstract

Abstrak Rental studio musik menghadapi tantangan serius dalam melindungi peralatan berharga mereka dari tindakan pencurian, dengan data BPS mencatat 1.140 kasus pencurian selama periode 2019-2021. Penelitian ini bertujuan mengembangkan sistem keamanan inovatif menggunakan sensor magnetometer HMC5883L dan magnet neodymium sebagai tag untuk mendeteksi dan mencegah pencurian peralatan studio musik. Metodologi penelitian menggunakan pendekatan rekayasa teknik dengan implementasi sistem yang terdiri dari enam sensor HMC5883L, sensor ultrasonik HC-SR04, multiplexer I2C TCA9548A, dan sistem notifikasi berbasis Telegram. Pengujian dilakukan di Pandawa Music Studio & Café dengan serangkaian evaluasi meliputi kalibrasi sensor, pengujian berbagai grade magnet neodymium (N42-N54), dan validasi sistem secara keseluruhan. Hasil penelitian menunjukkan sensor HMC5883L memiliki perbedaan pembacaan rata-rata 9,16% dibandingkan alat ukur standar, dengan magnet neodymium N54 memberikan performa optimal hingga jarak 30 cm. Sistem berhasil mendeteksi peralatan studio dengan tingkat keberhasilan 100%, tanpa false positive, dan rata-rata delay notifikasi Telegram 2,4 detik. Dapat disimpulkan bahwa sistem yang dikembangkan efektif dalam mendeteksi dan mencegah pencurian peralatan studio musik, dengan saran pengembangan meliputi integrasi dengan platform IoT tambahan, penambahan modul kamera, dan penggunaan sensor magnetometer dengan sensitivitas lebih tinggi. Abstract Music studio rentals face serious challenges in protecting their valuable equipment from theft, with BPS data recording 1,140 theft cases during the 2019-2021 period. This research aims to develop an innovative security system using HMC5883L magnetometer sensors and neodymium magnets as tags to detect and prevent music studio equipment theft. The research methodology employs a technical engineering approach with system implementation consisting of six HMC5883L sensors, HC-SR04 ultrasonic sensor, I2C TCA9548A multiplexer, and Telegram-based notification system. Testing was conducted at Pandawa Music Studio & Café with a series of evaluations including sensor calibration, testing of various neodymium magnet grades (N42-N54), and overall system validation. Research results show that the HMC5883L sensor has an average reading difference of 9.16% compared to standard measuring instruments, with N54 neodymium magnets providing optimal performance up to 30 cm distance. The system successfully detected studio equipment with a 100% success rate, no false positives, and an average Telegram notification delay of 2.4 seconds. It can be concluded that the developed system is effective in detecting and preventing music studio equipment theft, with development suggestions including integration with additional IoT platforms, addition of camera modules, and use of magnetometer sensors with higher sensitivity.
Co-Authors Adrianto, Dian Agustinus Agustinus Ahmad Atiq Alie, R.M. Mahrus Alviansyah, M. Khakim Aminullah Achmad Muttaqin Arie Indartono Azhari, Ferian Catur Wasonowati Dewanti, Anggelia Fadilah, Eka Hendra Hendra Hendri Maksum, Hendri I Putu Artaya Mawarda, Revina Ade Milyani, Jannatin Mohammad Syafii Nindita, Anggi Putri, Dita Febryanti Rahardjo, Imam Arif Rahmadani, Dicky Trilus Rahmat, M. Basuki Rahmatullah, Amri Rahmawati, Maulidia Dwi Rizal Bahaswan Salman Al Farisi, Salman Al Siti Fatimah Sri Wiwoho Mudjanarko, Sri Wiwoho Suwarno, Faiza Suyono, Joko Syaiful Syaiful Tri Aji Widodo S Pranowo Yuninda, Nur Hanifah