Claim Missing Document
Check
Articles

Found 16 Documents
Search

The Utilization of Vertical Wind Turbines for Micro Electricity Generation Budi Riyanto; Abdi Seno; Naf'an Arifian; Sarifuddin
Asian Journal Science and Engineering Vol. 3 No. 1 (2024): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v3i1.1803

Abstract

This research is motivated by the rapidly increasing demand for electricity driven by modernization and industrialization, as well as by environmental challenges resulting from reliance on non-renewable fossil energy sources, thereby prompting the search for clean and efficient alternative energy. The aim of this study is to examine the potential and performance of vertical wind turbines as an innovative solution for micro power generation by assessing the efficiency of converting wind energy into electricity and evaluating its economic aspects. An observational research method was employed, incorporating literature review, team discussions, design processes, device construction, and the implementation of testing through both laboratory and field methods. The study was conducted at the Politeknik Pelayaran Sumatera Barat, where the turbine was installed on the roof of a classroom building in a coastal area, taking advantage of favorable geographic conditions and supportive wind characteristics. Data collection involved direct measurements of parameters such as wind speed, turbine and generator RPM, and electrical voltage over designated time intervals, thereby producing data on the variability and operational performance of the turbine. Results indicate that the vertical wind turbine is capable of generating electricity optimally despite fluctuations in wind speed, and it offers advantages in terms of installation flexibility, low operational costs, and energy efficiency with room for improvement. Consequently, the study recommends the development of enhanced aerodynamic designs and more optimal driving mechanisms to accommodate dynamic operational conditions, thereby facilitating the widespread implementation of this solution to support the decentralization of renewable energy systems, reduce reliance on fossil fuels, and strengthen the sustainability of electricity supply.
Ketersediaan dan Kebutuhan RTH Publik sebagai Infrastruktur Evakuasi Bencana di Kawasan Perkotaan: Studi Kasus Kecamatan Palu Timur, Kota Palu Basri, Iwan Setiawan; Arifin, Rosmiaty; Sarifuddin; Pelealu, Regina Excelsia
Jurnal Peweka Tadulako Vol. 4 No. 2 (2025): Jurnal PeWeKa Tadulako
Publisher : Prodi PWK Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/peweka.v4i2.65

Abstract

The demand for space in urban areas is significant due to population and economic growth. As a result, the need for space has increased sharply. The most obvious impact is the expansion of the existence of Green Open Space (GOS). This study aims to assess the availability of public GOS in East Palu District by examining its proportion relative to the total land area and population, its potential role in disaster evacuation, and the identification of land suitable for future development. A descriptive quantitative method is employed, referencing national regulations such as Law No. 26 of 2007 and Ministry of Public Works Regulation No. 5 of 2008. Geographic Information Systems (GIS) were used for land mapping analysis. The findings indicate that in 2023, East Palu has 44.11 hectares of public GOS. With the district covering 970 hectares, the ideal allocation for green spaces is 149.9 hectares (20%). Given a population of 44,491, the required GOS amounts to 889.82 hectares, revealing a significant shortfall of 845.71 hectares. Furthermore, the identification of only 44.85 hectares of land as suitable for further GOS development remains insufficient. GOS is essential not only for aesthetics and recreation but also as crucial infrastructure for enhancing urban resilience during disasters. It is therefore vital for agencies involved in land management, urban planning, and disaster response to collaborate, ensuring that public GOS is prioritized in sustainable city planning.
Empowering School Students Through Simple Digital Marketing Portfolio Creation Winahyu, Pawestri; soraya, Zalkha; Satoto, Eko Budi; Adelia, Sherry; Sarifuddin
International Journal of Community Service (IJCS) Vol. 4 No. 2 (2025): July-December
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/ijcs.v4i2.1530

Abstract

This community service programme employed a participatory, experiential learning approach to equip secondary school students at Sangkhom Islam Wittaya School, Hat Yai, Thailand, with basic digital marketing skills through the creation of digital portfolios. Thirty students, supported by three teachers, took part in interactive lectures, demonstrations, guided practice, project-based learning, and feedback sessions. Quantitative results from paired sample t-tests showed a significant improvement in knowledge and skills, with mean scores increasing from 55.40 (SD = 8.25) in the pre-test to 78.30 (SD = 7.10) in the post-test (t(29) = 11.25, p < 0.05). Qualitative findings reinforced these outcomes: students demonstrated active participation and creativity, reported greater confidence in applying digital concepts, and produced coherent portfolios; teachers also confirmed improvements in digital competencies aligned with the school’s literacy objectives. Overall, the programme proved effective in delivering practical and relevant learning experiences that significantly enhanced students’ digital literacy and entrepreneurial potential in line with the demands of the digital era.
Efforts to Improve Learning Outcomes of Islamic Education Students with the Problem Based Learning Model at SD Negeri 0115 Sibuhuan Hasibuan, Misran Ansori; Sarifuddin; Nasution, Kholida Hafni
Jurnal Profesi Guru Indonesia Vol. 1 No. 4 (2024): DECEMBER 2024
Publisher : MANDAILING GLOBAL EDUKASIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62945/jpgi.v1i4.400

Abstract

This study aims to improve student learning outcomes in Islamic religious education learning using the Problem Based Learning Learning Model. This study is a classroom action research that uses four steps, namely planning, action, observation and reflection. The subjects of this study were elementary school students. The data for this study were obtained using test and observation techniques. Tests are used to measure learning and observations are used to analyze teacher and student learning activities. The data analysis technique used in this study is descriptive statistics by comparing the results obtained with indicators of research success. The results of the study indicate that the Problem Based Learning Learning Model can improve student learning outcomes in Islamic religious education learning. This can be seen from the increase in the percentage of student learning completion in each cycle with details of the pre-cycle 40.89%, the first cycle 68.87% and in the second cycle increased to 90.32%. Thus, the Problem Based Learning Learning Model can be used as an alternative to improve student learning outcomes in Islamic religious education learning.
User Satisfaction With Inaportnet Services at PT. Indonesian Maritime Penascop Palembang Branch Retnoningrum, Puji; Sarifuddin; Fedriani, Geeta
Dinasti International Journal of Economics, Finance & Accounting Vol. 5 No. 3 (2024): Dinasti International Journal of Economics, Finance & Accounting (July - August
Publisher : Dinasti Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/dijefa.v5i3.2757

Abstract

User satisfaction can be defined as the user's feelings resulting from comparing the user's expectations of the product with actual results, achieved through satisfaction with the information system. User satisfaction can be seen from several aspects, namely the content aspect, the accuracy aspect, the ease of use aspect, the form aspect, the time aspect according to Doll & Torkzadeh (1998). Inaportnet is a system based on an internet/web service network related to ship arrival and departure services as well as loading and unloading activities. This research uses qualitative research methods. With data collection techniques through interviews, observation and literature study. The results of this research are that the content aspect is satisfactory with access links, ship service forms and clear directions according to user needs. The accuracy aspect has been satisfactory by providing precise and accurate information and up to date services. The ease of use aspect has been satisfactory with a web address that is easy to find, helps users work and is easy to access. The form (format) aspect is not satisfactory with the appearance of the service being less attractive. The time aspect is not satisfactory for users because it does not comply with the standard reference for services using Inaportnet. Some of the obstacles that have been experienced by Inaportnet service users in carrying out the ship service process are poor service quality, network disruption, lack of science and technology, complicated usage procedures, and payment settlement problems.
Karakteristik dan Etiologi Dominan Penyebab Individu Suspek Infeksi di Rumah Sakit Undata Palu: Characteristics and Etiology of Dominant Causes of Individuals Suspected of Infection at Undata Hospital, Palu Sarifuddin; Aristo; M. Sabir; Ary Anggara; Siti Nurhasanah; Ratna Sari Dewi; Mufdiah Nurriza
Jurnal Kolaboratif Sains Vol. 7 No. 1: JANUARI 2024
Publisher : Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56338/jks.v7i1.4883

Abstract

Latarbelakang. Pandemi Covid-19 menyebabkan pembatasan kegiatan masyarakat, termasuk pemberian layanan Kesehatan yang terbatas dalam mengurangi penyebaran penyakit dan memberikan dampak terhadap penurunan tingkat layanan di Rumah Sakit khususnya pasien yang menjalani rawat jalan dan rawat inap. Tujuan penelitian ini adalah untuk mengetahui karakteristik suspek infeksi rawat jalan dan rawat inap Selama Pemberlakuan Pembatasan Kegiatan Masyarakat (PPKM) di Kota Palu. Metode Penelitian dengan pendekatan penelitian deskriptif, data rawat jalan dan rawat inap diperoleh dari rekam medis sebanyak 190 responden selama periode 2020-2021 yang memiliki sifat karakteristik tertentu (sesuai kriteria)inklusi penelitian. Hasil didapatkan dari 190 responden berdasarkan jenis kelamin (laki-laki 82.1%, perempuan 17.9%), Usia terbanyak (41-55 tahun) 67(35.3%), layanan (Rawat Jalan 132 (69.5%) dan Rawat Inap 58 (30.5%), keluhan Demam 89 (46.8%), kultur Feses 152 (80%), bakteri terbanyak E.coli 129 (67.9%), Stapylococcus aureus 23 (12.1%), Streptococcus pneumoniae 13 (6.8%), Pseudomonas aeruginosa 8(4.2%), Proteus mirabilis 7(3.7%), Klebsiella sp 6(3.2%), S.typhi 4(2.1%), kebiasaan merokok (ya 121(63.7%) tidak 45(23.7%), Cuci tangan (selalu 149(78.4%) kadang-kadang 27(14.2%, tidak tahu 14(7.4%), Pekerjaan (PNS 96(50.5%) dan buruh harian dan nelayan masing-masing 14(7.4%) lain-lain 3(1.6%), konsumsi antiviral 177(93.2%), konsumsi analgetik 169(88.9%), Riwayat konsumsi antibiotik 182(95.8%), tes swab antigen 186(97.9%), suspek diagnosis infeksi ditemukan TB Paru 90(47.4%), Diare 19(10%), ISK 23(12.1%), Psoriasis 13(6.8%), tifoid 12(6.3%), dan terendah Pneumonia 3(1.6%), kusta 2(1.1%). Isolat terbanyak di layanan rawat jalan ditemukan terbanyak adalah E.coli 38(28.8%) dan Stapylococcus aureus 7(5.3%) sedangkan di layanan Rawat Inap terbanyak E.coli 28(48.3%) dan Staphylococcus aureus 5(8.6%). Kesimpulan: Suspek infeksi Rawat Jalan sebanyak 132(69.5%) dan Rawat Inap sebanyak 58(30.5%), suspek penyakit terbanyak Rawat Jalan adalah tuberculosis 88(66.7%) dan Rawat Inap ISK 23(39.6%) dan isolat terbanyak Rawat Jalan adalah E.coli dan S.aureus (28.8%) dan 5.3%) dan Rawat Inap isolat terbanyak E.coli dan S.aureus (48.3%) dan (8.6%).