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Turbin Screw Untuk Pembangkit Listrik Skala Mikrohidro Ramah Lingkungan Saefudin, Encu; Kristyadi, Tarsisius; Rifki, Muhammad; Arifin, Syaiful
Jurnal Rekayasa Hijau Vol 1, No 3 (2017)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Institut Teknologi Nasional

ABSTRACTType screw water turbine is a type of water turbine which has the potential for small scale power plants, where water turbine screw type is suitable for rivers in parts of Indonesia because the operation of the turbine require only a low head turbine. With the potential of irrigation water streams at the rate of 0.3302 m3/s in Banjaran village allows the installation of the turbines type screw. In the process of designing a water turbine type screw to be optimized turbine screw to determine the value of the ratio d/D, and then calculating mechanically to determine the dimensions of the turbine blades, the turbine shaft, the transmission system (gears, pulleys and belt) as well as the power that can be produced by the turbines, by using a head of 1.05 meters. The results of this research are the technical specifications of the turbine screw with the design power of 2678.35 Watt. Performance test of the turbine was carried out in Nagrak village of Ciherang irrigation canals on Cangkuang Banjaran sub district. With variable discharge, measuring the speed of rotation of the shaft generator, the voltage and current that is produced as well as the efficiency of the turbine. From the results of testing gained 17.82 % efficiency, power turbine 531.84 Watts at discharge 0,277 m3/s.Keywords: Turbine, Head, Microhydro, OptimazedABSTRAKTurbin air tipe ulir adalah salah satu tipe turbin air yang berpotensi untuk pembangkit listrik skala kecil yang ramah lingkungan, dimana turbin air tipe ulir sangat cocok untuk sungai-sungai di wilayah Indonesia karena pengoperasian turbin ini hanya memerlukan head turbin yang rendah. Melihat potensi air aliran sungai irigasi dengan debit 0,3302 m3/s yang berada di Desa Banjaran memungkinkan pemasangan turbin tipe ulir. Pada proses perancangan turbin air tipe ulir dilakukan optimasi turbin screw dengan menentukan nilai perbandingan d/D, lalu melakukan perhitungan mekanikal untuk menentukan dimensi dari sudu turbin, poros turbin, sistem transmisi (roda gigi, puli dan belt) juga daya yang mampu dihasilkan turbin, dengan head 1,05 meter. Hasil dari penelitian ini berupa spesifikasi teknis turbin ulir dengan daya hasil rancangan sebesar 2678,35 Watt dan gambar 2 dimensi serta 3 dimensi turbin ulir hasil rancangan. Hasil perancangan kemudian direalisasikan. Untuk mengetahui kinerja turbin dilakukan pengujian yang dilaksanakan di saluran Irigasi Ciherang Desa Nagrak Kecamatan Cangkuang Banjaran. Dengan variabel ukur yaitu debit, kecepatan putaran poros generator, voltase dan arus yang dihasilkan serta efisiensi turbin. Dari hasil pengujian didapat efisiensi 17.82 %, Daya turbin 531.84 Watt pada debit 0,277 m3/s.Kata kunci: Turbin, Head, Mikrohidro, Optimasi

DINAMIKA IMPLEMENTASI KONSEP SISTEM TANGGUNG RENTENG DAN KONTRIBUSINYA PADA TERCAPAINYA ZERO BAD DEBT Syaiful Arifin
Jurnal Keuangan dan Perbankan Vol 12, No 3 (2008): September 2008
Publisher : University of Merdeka Malang

Co-operation realizing togetherness and member prosperity, more and more becamea solution in replying global challenge and regional newly. Pursuant to analysis result ofresearch which had been conducted to co-operation of woman saving and loan in region ofTown Probolinggo in the reality co-operation managed by all this womankind was dynamicenough. It was proven because 31,25% among others were always as the commitment ofsystem norm account the renteng. The comitment was looked from its management dynamicswhich always respected the togetherness, the core importance in specifying decision.The caseof stipulating of membership status and also case of comitment togetherness to account theloss when it happened did not bill the members. Something else from the result finding ofthis research was that in reality the dynamism of system management account the renteng hadthe linearity to make-up of net income (SHU), even in the reality it also affected positively toalloted net income. A fact empirically proved that system account the renteng represented thesocial capital which could not be disregarded. Managing economy was an entity like cooperation.

IMPLEMENTASI DIMENSI KUALITAS DAN DAMPAKNYA TERHADAP KINERJA ORGANISASI (Studi Pada Perusahaan-perusahaan Besar dan Sedang di Malang Jawa Timur) Syaiful Arifin; Tri Wahyuni
Jurnal Manajemen dan Kewirausahaan Vol 4, No 1 (2016): June 2016
Publisher : University of Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jmdk.v4i1.423

This researchanalyzes theinfluence of thevariousdimensions ofqualityon the company performance.The source of data research are 75 companies composed of 46 major companies and 29 medium companies.The datacollected through middlemanagers and top managers of major and medium companiesin Malang, East Java.The results showed thatthe dimension ofquality (customer satisfaction,employee satisfactionandemployeeservicequality)effectsignificantly toorganizational performanceat both themajor companiesand medium companies .The service quality of employee has a dominant effect to the performance ofthe company.

PEMBUATAN BIOPORI UNTUK MENGURANGI MASALAH GENANGAN AIR DI DESA NYALABU DAYA KECAMATAN PAMEKASAN KABUPATEN PAMEKASAN Syaiful Arifin
Jurnal Pengabdian Kepada Masyarakat (J-ABDIMAS) Vol 7 No 1 (2020): JURNAL PENGABDIAN KEPADA MASYARAKAT 2020
Publisher : Publisher UPT P2M Politeknik Negeri Malang

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

Nyalabu Daya Village is one of the dry areas where the soil has poor water absorption, or the amount of rainfall exceeds the soil's ability to absorb water. When it rains, what sometimes happens is a puddle of water that cannot be absorbed into the ground. Biopori is a solution to prevent flooding, a place for making organic waste, fertilizing plants, and improving the quality of groundwater. This service activity begins with the socialization of the importance of making biopore infiltration holes, how to make biopore holes, and determining the strategic points of biopore holes. Community service activities in the form of making biopores in Nyalabu Daya Village, Pamekasan District, Pamekasan Regency have been running successfully and are installed at several points. Villagers after knowing the benefits and ease of applying this biopore technology, many residents have independently installed biopori in the yard of their respective residents.

PEMBUATAN BIOPORI UNTUK MENGURANGI MASALAH GENANGAN AIR DI DESA NYALABU DAYA KECAMATAN PAMEKASAN KABUPATEN PAMEKASAN Syaiful Arifin
Jurnal Pengabdian kepada Masyarakat Vol. 7 No. 1 (2020): JURNAL PENGABDIAN KEPADA MASYARAKAT 2020
Publisher : P3M Politeknik Negeri Malang

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

Nyalabu Daya Village is one of the dry areas where the soil has poor water absorption, or the amount of rainfall exceeds the soil's ability to absorb water. When it rains, what sometimes happens is a puddle of water that cannot be absorbed into the ground. Biopori is a solution to prevent flooding, a place for making organic waste, fertilizing plants, and improving the quality of groundwater. This service activity begins with the socialization of the importance of making biopore infiltration holes, how to make biopore holes, and determining the strategic points of biopore holes. Community service activities in the form of making biopores in Nyalabu Daya Village, Pamekasan District, Pamekasan Regency have been running successfully and are installed at several points. Villagers after knowing the benefits and ease of applying this biopore technology, many residents have independently installed biopori in the yard of their respective residents.

Innovation As The Competitiveness Of Maritime Universities In Semarang Agus Aji Samekto; Lilik Kustiani; Syaiful Arifin
International Journal of Economics and Management Research Vol. 2 No. 3 (2023): December : International Journal of Economics and Management Research
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/ijemr.v2i3.178

Increasingly fierce competition causes university managers, both private universities (PTS) and public universities (PTN), to maximize existing resources. Not only on resource management but also must pay attention to the ability of each unit or part of the college that has selling value to the community, has something different from competitors and also pays attention, implements regulations from the government and has differentiation. Innovation gets the attention of maritime universities in Semarang by making continuous improvements. In addition to continuous improvement, they also make overall changes. The competitive advantage of maritime universities in Semarang is able to provide the best quality by getting a quality standard assessment from IMO, ISO, and having an international standard network. Maritime Universities in Semarang are universities that have differences compared to universities in general. It is something different and has a uniqueness, but like other universities, massively also has a strategy to increase competitive advantage, so the hope of maritime college in Semarang is to have many and sustainable students.

The Impact of Brand Image on The intention to continue using an E-Wallet Through E-Satisfaction Ryan Suarantalla; Fajar Suparto; Syaiful Arifin
Jurnal Ilmiah Raflesia Akuntansi Vol. 11 No. 1 (2025): Jurnal Ilmiah Raflesia Akuntansi
Publisher : Politeknik Raflesia Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53494/jira.v11i1.900

This study aims to analyze the influence of Brand Image on the intention to continue using E-Wallet through E-Satisfaction in West Nusa Tenggara. Using a quantitative approach, data were collected through a survey with 196 respondents who use E-Wallet. The results of the hypothesis test indicate that Brand Image has a significant positive influence on E-Satisfaction. In addition, E-Satisfaction functions as a significant mediating variable in the relationship between Brand Image and the intention to continue using E-Wallet. With a p-value smaller than 0.05, all tested hypotheses can be accepted, which confirms that E-Satisfaction strengthens the influence of Brand Image on the intention to continue using E-Wallet. These findings suggest that in order to increase E-Wallet user loyalty, companies need to build a strong brand image while ensuring a satisfying user experience.

PENGARUH KEPEMIMPINAN TRANSFORMASIONAL KEPALA SEKOLAH DAN LINGKUNGAN KERJA TERHADAP KINERJA GURU MELALUI KEPUASAN KERJA PADA SMP SWASTA KATOLIK SE-KOTA LEWOLEBA Yustina Sija; Syaiful Arifin; Pudjo Sugito
Journal of Economic, Bussines and Accounting (COSTING) Vol. 9 No. 2 (2026): Journal of Economic, Bussines and Accounting (COSTING)
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/wmcs8489

Penelitian ini bertujuan untuk menganalisis pengaruh kepemimpinan transformasional kepala sekolah dan lingkungan kerja terhadap kinerja guru melalui kepuasan kerja pada SMP Swasta Katolik se-Kota Lewoleba. Penelitian menggunakan pendekatan kuantitatif dengan data yang diperoleh melalui kuesioner skala Likert 1–5 yang disebarkan kepada 152 guru sebagai responden. Analisis data dilakukan menggunakan Structural Equation Modeling (SEM) berbasis Partial Least Squares (PLS) dengan bantuan SmartPLS. Hasil penelitian menunjukkan bahwa kepemimpinan transformasional kepala sekolah berpengaruh positif dan signifikan terhadap kinerja guru serta kepuasan kerja guru. Kepuasan kerja juga berpengaruh positif dan signifikan terhadap kinerja guru. Sementara itu, lingkungan kerja tidak berpengaruh secara langsung terhadap kinerja guru, tetapi berpengaruh positif dan signifikan terhadap kepuasan kerja. Lingkungan kerja juga memiliki pengaruh tidak langsung terhadap kinerja guru melalui kepuasan kerja. Selain itu, kepuasan kerja terbukti memediasi pengaruh kepemimpinan transformasional dan lingkungan kerja terhadap kinerja guru. Temuan ini menegaskan bahwa kepemimpinan transformasional dan lingkungan kerja berperan penting dalam meningkatkan kepuasan kerja, yang selanjutnya berdampak pada kinerja guru. Penelitian ini mendukung teori kepemimpinan transformasional dan teori kepuasan kerja yang menempatkan kepuasan sebagai faktor kunci dalam meningkatkan kinerja individu. Implikasi praktis penelitian ini adalah pentingnya penguatan kepemimpinan transformasional kepala sekolah serta penciptaan lingkungan kerja yang kondusif guna meningkatkan kepuasan dan kinerja guru secara berkelanjutan.

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