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All Journal Jurnal Dimensi Pratama Teknik Sipil Livestock and Animal Research Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Jurnal Riset Manajemen dan Bisnis (JRMB) Fakultas Ekonomi UNIAT JURNAL ATOMIK Jurnal ULTIMATICS JMTS: Jurnal Mitra Teknik Sipil COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat E-Jurnal Akuntansi TSM Journal of International Multidisciplinary Research The Indonesian Journal of General Medicine Harmonia : Journal of Music and Arts Jurnal Sistem Transportasi & Logistik
Jonathan Jonathan
Mahasiswa Program Studi Teknik Sipil Universitas Kristen Petra
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Public Health Social Sciences Transportation Veterinary Other

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PERBANDINGAN PPC DAN FAKTOR-FAKTOR YANG MEMPENGARUHI PADA DUA PROYEK APARTEMEN Jonathan, Jonathan; Anton, Anton; Andi, Andi
Jurnal Dimensi Pratama Teknik Sipil Vol 4, No 1 (2015)
Publisher : Jurnal Dimensi Pratama Teknik Sipil

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (78.005 KB)

Abstract

Dalam perkembangan dunia konstruksi yang semakin komplek, sering terjadi pekerjaan yang tidak dapat diselesaikan sesuai dengan jadwal perencanaan yang ada pada action plan. Penelitian ini bertujuan untuk menilai suatu perencanaan proyek dengan menghitung Percent Plan Completed dan juga mendapatkan faktor-faktor penyebab tidak tercapainya rencana pekerjaan (Reason Not Complete). Hal ini dilakukan dengan menerapkan kontrol aliran kerja yang berkesinambungan agar perencanaan menjadi lebih handal. Selain itu juga akan diteliti mengenai penggunaan kontrol aliran kerja sistem last planner pada suatu proyek konstruksi. Penelitian ini telah dilakukan selama 19 minggu. Hasil penelitian menunjukkan bahwa rata-rata PPC (Percent Plan Completed) sebesar 61,15% dan 57,32%, kemudian faktor penyebab dominan tidak terselesaikannya pekerjaan dalam proyek ini adalah faktor predecessor. Selain itu proyek yang diamati ini sedikit melakukan kontrol aliran kerja sistem last planner. Dimana aliran kerja yang dilakukan yaitu action plan2 mingguan dan daily meeting yang dilakukan seminggu sekali.
Pengaruh Penggunaan Hijauan Rawa Fermentasi Terhadap Penampilan Kambing Kacang (Capra hircus) Jaelani, A.; Rostini, T.; Zakir, M. I.; Jonathan, Jonathan
Sains Peternakan: Jurnal Penelitian Ilmu Peternakan Vol 12, No 2 (2014): Sains Peternakan
Publisher : Universitas Sebelas Maret (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/sainspet.v12i2.4770

Abstract

The study effect of using swamp forages fermentation to Kacang Goat performance wasconducted in Marabahan City from August till September 2013. This study was used an experimental method. The design used was a completely blocked design with 3 treatments and 4 Block as replications (3x4) to obtain 12 units. The Treatment are K1 (using 100% fresh forage), K2 (using silage of swamp forage), K3 (using haylage of swamp forage). The goat was average 11-14 kg body weight.ANOVA test results showed that using of swamp forages fermentation more significantly affect the feed consumption (570.8 g.goat-1.day-1), and significantly to final bodyweight (16.3 kg), but did not significantly affect to average daily gain, and feed convertion. Treatment Silage of forage swamp could be raise feed consumption and final body weight of Kacang goat.Key words: Swamp forage, silage, haylage, Kacang goat
PENGARUH KUALITAS LABA TERHADAP NILAI PERUSAHAAN DENGAN REAKSI PASAR SEBAGAI VARIABEL INTERVENING Jonathan, Jonathan; Machdar, Nera Marinda
Jurnal Riset Manajemen dan Bisnis (JRMB) Fakultas Ekonomi UNIAT Vol 3 No 1 (2018)
Publisher : Economic Faculty, Attahiriyah Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (161.902 KB) | DOI: 10.36226/jrmb.v3i1.87

Abstract

This study aims to determine the effect of earnings quality to firm value with market reaction as intervening variable. This study conducted by using the secondary data. Analysis method was the multiple linear regression analysis by utilizing SPSS 22 program and path analysis. The population in this study is the manufacturing companies listed on the Indonesian Stock Exchange during the period 2010-2015. The determination of the sample used a purposive sampling method and obtained 104 companies as a sample. The result showed that (a) earnings quality significantly negative affect on firm value, (b) earnings quality doesn’t effect significantly of firm value through market reaction, (c) earnings quality doesn’t effect significantly of market reaction and (d) debt equity ration and leverage as control variable, only debt quity ratio significantly effect of firm value . Keywords: earning quality, firm value, market reaction, abnormal return
PENGARUH FAKTOR-FAKTOR KEUANGAN DAN TATA KELOLA PERUSAHAAN TERHADAP NILAI PERUSAHAAN Jonathan, Jonathan; Mungniyati, Mungniyati
E-Jurnal Akuntansi TSM Vol. 3 No. 2 (2023): E-Jurnal Akuntansi TSM
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat Sekolah Tinggi Ilmu Ekonomi Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34208/ejatsm.v3i2.2163

Abstract

This study aims to obtain empirical evidence regarding the variables that affect firm value. The independent variables are the company's size, profitability, leverage, liquidity, capital structure, investment decisions, independent commissioners, institutional ownership, and managerial ownership. This study uses secondary data from financial and annual reports of companies listed on the Indonesia Stock Exchange from 2019 to 2021. It uses a purposive sampling method to select 131 companies that met the criteria. Hypothesis testing uses multiple linear regression analysis through the IBM SPSS Version 2.5. The results of this study indicate that firm size and independent commissioners influence the firm value. On the other hand, profitability, leverage, liquidity, capital structure, investment decisions, institutional ownership, and managerial ownership do not influence firm value.
Comparison of Fine-tuned CNN Architectures for COVID-19 Infection Diagnosis Jonathan, Jonathan; Widjaja, Moeljono; Suryadibrata, Alethea
ULTIMATICS Vol 16 No 1 (2024): Ultimatics : Jurnal Teknik Informatika
Publisher : Faculty of Engineering and Informatics, Universitas Multimedia Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31937/ti.v16i1.3652

Abstract

SARS-CoV-2 (COVID-19) virus spread quickly worldwide affects a variety of industries. The government took preventive steps to control the infection, such as diagnosing the human's lung by taking an X-Ray to see if the lungs were infected with COVID-19 or not. Using several pre-trained Convolutional Neural Network models as the basic model, this research deconstructs the comparison of fine-tuned architecture to identify which pre-trained model delivers the best outcomes in diagnosis by applying machine learning. Comparison is conducted using two scenarios that use batch sizes 64 and 32. Accuracy and f1 score are two evaluation metrics used to justify the model's good performance because the images in the real world, especially for positive classes, are scarce. According to the study, EfficientNetB0 outperforms other pre-trained models, namely ResNet50V2 and Xception, which achieved an accuracy of 0.895 and f1 score of 0.8871.
PENERAPAN GEOCENTRIC STAFFING DALAM PEREKRUTAN KARYAWAN TINGKAT MANAJERIAL IBU KOTA  NUSANTARA (IKN) DI BIDANG TRANSFORMASI HIJAU DAN DIGITAL Paretta, Shelomita; Sadihatmanta, Benedicta Gisella; Samantha, Maria; Jaya, Vionna; Sihotang, Rahel Noprianti; Hartadi, Haris; Jonathan, Jonathan; Alexandra, Jessica
Journal of International Multidisciplinary Research Vol. 1 No. 2 (2023): Desember 2023
Publisher : PT. Banjarese Pacific Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62504/t2k00856

Abstract

This research aims to explore and evaluate the implementation of the geocentric staffing approach in the managerial employee recruitment process at the Capital of Nusantara (IKN). The geocentric approach considers qualifications, skills, and experience without regard to the candidate's country of origin. The research methodology involves a case study and analysis of managerial recruitment data. Through a qualitative approach, this study evaluates the effectiveness of geocentric staffing in creating a diverse managerial team and supporting the development goals of IKN. However, implementation challenges such as cultural differences, communication, and individual expectations are also highlighted in this research. By understanding these challenges, the study offers strategic recommendations to enhance the effectiveness of Geocentric Staffing implementation in IKN.
Percutaneous Coronary Intervention vs Coronary Artery Bypass Grafting in Patients With Left Main Coronary Artery Stenosis Jonathan, Jonathan; Ronald, Ronald
The Indonesian Journal of General Medicine Vol. 2 No. 4 (2024): The Indonesian Journal of General Medicine
Publisher : International Medical Journal Corp. Ltd

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70070/g9tv6075

Abstract

Background: The literature on the management of left main coronary artery disease (LMCAD) through percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG) reveals a complex interplay of efficacy, safety, and long-term outcomes. The introduction of advanced technologies, particularly drug-eluting stents (DES), has positioned PCI as a viable alternative to CABG, even in cases traditionally managed by surgical intervention. Literature Review: The findings from (Eifert et al., 2010) indicate a significant increase in the acceptance of PCI, with long-term survival rates being comparable to CABG in both single and multivessel cases. However, concerns arise regarding the higher rates of recurrent symptoms and the necessity for repeat operations following PCI, which may question its long-term efficacy, particularly in the context of LMCAD. Conclusion: In conclusion, the body of literature supports the notion that both PCI and CABG are viable treatment options for LMCAD, with each approach offering distinct advantages and limitations. The decision-making process should be individualized, taking into account patient-specific factors, including age, comorbidities, and the anatomical complexity of coronary lesions. Ongoing research and longer follow-up studies are essential to further elucidate the long-term implications of these interventions and to refine clinical guidelines for the management of LMCAD.
SKRINING FITOKIMIA DAN UJI TOKSISITAS MENGGUNAKAN BRINE SHRIMP LETHALITY TEST (BSLT) DARI EKSTRAK DIKLOROMETANA RIMPANG TEMU KUNCI (Boesenbergia rotunda) Jonathan, Jonathan; Ruga, Ritbey; Hairani, Rita
JURNAL ATOMIK Vol 9 No 2 (2024)
Publisher : Jurusan Kimia FMIPA UNMUL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/ja.v9i2.1407

Abstract

The rhizome of Boesenbergia rotunda (temu kunci) is one of medicinal plants having potential for medicinal, supplementary food and drink due to its biological activities. The aims of this research are to identified the secondary metabolite compounds present in the dichlorometane extract of finger-root rhizomes through phytochemical screening using thin layer chromatography (TLC) method and to investigated its toxicity against Artemia salina L. shrimp larvae by using Brine Shrime Lethality Test (BSLT). The result of phytochemical analysis showed that the dichloromethane extract contains secondary metabolite compounds including flavonoids, phenolics and triterpenoids while the toxicity test of the extract showed its LC50 value of 303.68 µg/mL. It was indicated that the extract could be classified as toxic.
ANALISIS PERBANDINGAN KINERJA SEISMIK STRUKTUR BANGUNAN ABC DENGAN VARIASI DIMENSI SHEAR WALL Jonathan, Jonathan; Untari Liucius, Yenny; Wijaya, Hendy
JMTS: Jurnal Mitra Teknik Sipil Volume 8, Nomor 1, Februari 2025
Publisher : Prodi Sarjana Teknik Sipil, FT, Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmts.v8i1.32662

Abstract

Indonesia is highly susceptible to earthquakes due to its location at the convergence of the Indo-Australian, Eurasian, and Pacific tectonic plates. This makes buildings in Indonesia particularly vulnerable to seismic damage. To enhance structural resilience, the use of shear walls has proven effective in strengthening buildings against earthquake forces. This study analyzes the seismic performance of the ABC building structure without shear walls and compares it to structures with three different shear wall configurations. These configurations vary in length and thickness but have similar moments of inertia. The shear walls are placed in identical positions across all models, ensuring that performance differences are solely due to geometric variations. Structures without shear walls serve as a baseline for comparison. The seismic load analysis uses the response spectrum method to evaluate key parameters such as behavior during natural vibration periods, percentage of seismic load received by the structure, lateral displacement, and inter-story drift. Findings indicate that the model with a 3-meter-long and 300 mm thick shear wall is the most effective, achieving the smallest reductions in natural vibration period and inter-story drift, thereby offering the best improvement in structural resilience. ABSTRAK Indonesia merupakan negara yang rawan gempa karena terletak di pertemuan tiga lempeng tektonik utama, yaitu Lempeng Indo-Australia, Eurasia, dan Pasifik. Posisi geografis ini menjadikan bangunan di Indonesia rentan terhadap kerusakan akibat gempa. Dalam upaya meningkatkan ketahanan struktur terhadap beban seismik, penggunaan shear wall telah terbukti efektif dalam memperkuat struktur dan meminimalkan kerusakan. Penelitian ini bertujuan untuk menganalisis dan membandingkan kinerja struktur seismik pada bangunan ABC tanpa shear wall dengan bangunan yang memiliki tiga variasi shear wall yang berbeda dalam dimensi panjang dan ketebalan tetapi memiliki nilai momen inersia yang serupa. Posisi shear wall pada ketiga model tetap seragam agar perbedaan kinerja disebabkan murni oleh variasi geometris. Analisis beban gempa pada bangunan menggunakan metode respon spektrum untuk mengevaluasi berbagai parameter kinerja struktur, yaitu periode getar alami, distribusi beban seismik yang diterima struktur, simpangan lateral tingkat, dan simpangan antar lantai tingkat. Berdasarkan hasil analisis pada tiga model shear wall, dapat disimpulkan bahwa pemodelan shear wall dengan panjang 3 meter dan tebal 300 mm merupakan yang pemodelan terbaik karena menghasilkan  penurunan nilai periode getar alami terbesar dan nilai simpangan antar lantai terkecil dibandingkan dengan struktur awal dan model shear wall lainnya.
MobileNetV3-based Handwritten Chinese Recognition Towards the Effectiveness of Learning Hanzi Liang, Suwarno; Tony Tan; Jonathan, Jonathan
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 7 No 6 (2023): December 2023
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v7i6.5505

Abstract

Writing Mandarin characters is considered the most challenging component for beginners due to the rules and character formations. This paper explores the potential of a machine learning-based digital learning tool for writing Mandarin characters. It also conducts a comparative study between MobileNetV2 and MobileNetV3, exploring different configurations. The research follows the Multimedia Development Life Cycle (MDLC) method to create both the application and machine learning models. Participants from higher education institutions that offer Mandarin courses in Batam, Indonesia, were involved in a User Acceptance Test (UAT). Data was gathered through questionnaires and analyzed using the System Usability Scale (SUS) methods. The results show positive user acceptance, with an SUS score of 77.92%, indicating a high level of acceptability. MobileNetV3Small was also preferred for recognizing the user’s handwriting, due to comparable accuracy size, rapid inference time, and smallest model size. While the application was well-received, several participants provided constructive feedback, suggesting potential improvements.
Co-Authors A. Jaelani, A. Alexandra, Jessica Andi Andi Anton Anton Aradena, Athallah Aqil Ghani Halim Darma, Wika Dwi Hairani, Rita Hartadi, Haris Jaya, Vionna Liang, Suwarno Liucius, Yenny Untari M. I. Zakir, M. I. MUNGNIYATI, MUNGNIYATI Munthe, Yesyurun Nera Marinda Machdar Paretta, Shelomita Parlindungan, Purbanuara Puspita, Sesaria Mardhiani Rachma Rahfi, Muhamad Sauqi Ronald Ronald Ruga, Ritbey Sadihatmanta, Benedicta Gisella Salim, Hartini Samantha, Maria Sianturi, Mahmud Sihotang, Rahel Noprianti Sintalegawa, Jasmine Ambun Suryadibrata, Alethea T. Rostini, T. Tedjo, Tony Tetty, Daniel Edward Timotius, Frenky Albert Tony Tan Widjaja, Moeljono Wijaya, Hendy Yana Tatiana, Yana