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All Journal Jurnal Pendidikan Teknik Mesin Geological Engineering E-Journal Fountain of Informatics Journal BAREKENG: Jurnal Ilmu Matematika dan Terapan Bisma: Jurnal Bisnis dan Manajemen MATRIK : Jurnal Manajemen, Teknik Informatika, dan Rekayasa Komputer INTEK: Jurnal Penelitian Building of Informatics, Technology and Science Jurnal Optimalisasi Scholastica : Jurnal Pendidikan dan Kebudayaan Jurnal Ilmu Pendidikan Islam Tadris: Jurnal Pendidikan Islam Buletin Pengabdian Journal of Global Engineering Research & Science (J-GERS) Ta'amul: Journal of Islamic Economics

Lutfi Hakim

Program Studi Teknik Geologi Universitas Diponegoro, Semarang

Author-ID : 272980

Religion Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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PENINGKATAN PEMAHAMAN TENTANG SUDUT DWELL DENGAN MENGGUNAKAN ALAT PERAGA SISTEM PENGAPIAN Hakim, Lutfi; Wijanarko, Dwi; Hadromi, -
Jurnal Pendidikan Teknik Mesin Vol 9, No 2 (2009)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Negeri Semarang

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Penelitian ini bertujuan untuk mengetahui peningkatan pemahaman mahasiswa tentangsudut dwell dengan menggunakan media alat peraga sistem pengapian. Populasi dalampenelitian ini adalah mahasiswa pengikut matakuliah Kelistrikan Otomotif JurusanTeknik Mesin Universitas Negeri Semarang yang terdiri dari 30 mahasiswa. Penelitiandilakukan dengan metode Quasi Eksperiment dengan pola pretest-post test one groupdesign dengan memberikan perlakukan tambahan penggunaan alat peraga dalam prosesperkuliahan. Data penelitian diperoleh dengan pretest (sebelum penggunaan alat peraga)dan posttest Karena yang dilakukan penelitian hanya satu kelas maka yang diambiladalah seluruh populasinya. Hasil analisis data menunjukkan bahwa ada peningkatanpemahaman tentang sudut dwell pada sistem pengapian setelah menggunakan alatperaga.Kata kunci: pemahaman, metode pengajaran alat peraga, sistem pengapian

ANALISIS MASERAL DENGAN METODE REFLECTANCE VITRINITE UNTUK MENGETAHUI KUALITAS BATUBARA PADA SUMUR AL 25, LAPANGAN KINTAP, KABUPATEN TANAH LAUT PROVINSI KALIMANTAN SELATAN, PT. ANUGERAH LUMBUNG ENERGI Hakim, Lutfi; Rachwibowo, Prakosa; Widiarso, Dian Agus; Zaqqie, Bagus
Geological Engineering E-Journal Vol 6, No 1 (2014): Volume 6, Nomor 1, Tahun 2014
Publisher : Geological Engineering E-Journal

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The spread of coal deposits in Indonesia is quite large, most of coal basin is located in Sumatra and Kalimantan. One of the basin that produce economical coal deposit with value of calories more than 6.000 kal/g in Tanjung Formation is Asam-Asam Basin (Darlan etc, 1999). PT Anugerah Lumbung Energi is one of the coal mining companies with mining working area on Asam-asam basin. Research areaÂ is locatedÂ in Kintap field, Tanah Laut Regency, South Kalimantan. The aim of this research is to find out about coal quality using maceral analysis with vitrinite reflectance method on well AL 25 and spread direction of coal seam at the research area.Methods of research are descriptive and analysis. Based on these methods, done the stage of the analysis and interpretation with data supporting are stratigraphical data and laboratory data. Activities performed such as geological mapping, maceral analysis with vitrinite reflectance methods and coal quality interpretation on well AL 25. The software used to support this undergraduate thesis are the Arcgis ,Autocad X 5 and Corel Draw. In Undergraduate Thesis, the author has divided into five phases, such as lithology description, cropline withdrawal based on strike and dip, maceral analysis, coal quality interpretation and results correlation of maceral analysis, rank and coal quality on the well AL 25.Based on the result of analysis data, it can be interpreted that lithology at the research area are sandstones, siltstone, claystone and thin layer of coal. The direction of seam coal ( cropline ) at the research area is southeast - northwest based on strike / dip. The results of the maceral analysis for each seam produce rank between Lignite to High Volatile bituminous B, whereas the results of the quality analysis for each seam produces a caloric value ranging from 12040.35 to 13786.69 Btu/lb or ranged from High Volatile Bituminous C to High Volatile Bituminous B. Based on the result of maceral analysis, rank and coal quality, it can be concluded that there are a mutual relation between maceral, rank and coal quality. The mutual relation is when the high percentage value of vitrinite reflectance so that value of coal calorie is good too.

PENERAPAN LINEAR PROGRAMMING DALAM PENENTUAN KOMBINASI PRODUK GUNA MEMAKSIMALKAN LABA PADA UD PUTERA SROEDJI JEMBER Hakim, Lutfi; Paramu, Hadi; Gusminto, Eka Bambang
BISMA: Jurnal Bisnis dan Manajemen Vol 12 No 3 (2018)
Publisher : Jurusan Manajemen Fakultas Ekonomi dan Bisnis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bisma.v12i3.9000

Abstract: The purpose of this study is to analyze the constraints and the optimalproduct combinations in the production process to obtain maximum profit at UDPutera Sroedji. UD Putera Sroedji is one of the trading companies selling packagedrice that consisted of the 2.5 kg, 5 kg, and 25 kg packaging. In its productionprocess, the company experienced the problem or constraints regarding the lessoptimal use of resources to reach maximum profit. Linear programming can beused to allocate the limited resources in the production process in order to obtainmaximum profit. This research used forecasting and linear programming methodsto determine the optimal product combination at UD Putera Sroedji. Resultsshowed that UD Putera Sroedji should produce 200 units of 2.5 kg packaged rice,600 units of 5 kg packaged rice, and 148 units of 25 kg packaged rice in order toachieve a maximum profit of Rp 7,960,977 per month.Keywords: packaged rice, maximum profit, linear programming, and simplexmethod.Abstrak: Tujuan penelitian ini adalah untuk menganalisis kendal-kendala(constraints) dan kombinasi produk yang optimal dalam proses produksi untukmemperoleh laba atau keuntungan maksimal pada UD Putera Sroedji. UD PuteraSroedji merupakan salah satu perusahaan dagang yang bergerak dalamperdagangan beras kemasan, dalam kemasan 2,5 kg, 5 kg, dan 25 kg. Dalamproses produksinya, perusahaan menghadapi beberapa masalah atau kendalayang berhubungan dengan penggunaan sumber daya yang belum optimalsehingga laba yang didapatkan belum maksimal. Linear programming dapatdigunakan untuk mengalokasikan sumber daya yang terbatas untuk memperolehlaba maksimal. Metode analisis yang digunakan dalam penelitian ini adalahforecasting dan linear programming untuk menentukan kombinasi produk yangoptimal. Hasil analisis menunjukkan bahwa UD Putera Sroedji harus memproduksi200 unit beras kemasan 2,5 kg; 600 unit beras kemasan 5 kg; dan 148 unit beraskemasan 25 kg untuk mendapatkan laba maksimal sebesar Rp 7.960.977 perbulan.Kata Kunci: beras kemasan, laba maksimal, linear programming, metodesimpleks.

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Kmeans Clustering Segmentation on Water Microbial Image with Color and Texture Feature Extraction Kristanto, Sepyan Purnama; Hakim, Lutfi; Yusuf, Dianni
Building of Informatics, Technology and Science (BITS) Vol 4 No 3 (2022): December 2022
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bits.v4i3.2490

Image segmentation is one of the analytical processes for digital image recognition, where this process divides the digital image into several unique regions based on homogeneous pixels. The process of homogeneous grouping images is based on several colour, texture and shape features. Colour in digital image processing is very important because colour has many information humans can easily understand. Colour has various features, combining colour intensity and grey (grayscale) and binary (black and white) values. However, the colour feature extraction process has many weaknesses. If the object used has a very small si[1]ze and range area, the use of colour features needs to be combined with extraction, and the segmentation process can be maximized. This study uses colour and texture features in the extraction process. It uses bacterial objects (microbes) from water, with limited image quality and objects that tend to be difficult to identify. The colour space feature extraction process is combined with a Gabor filter so that the segmentation process produces high-quality accuracy. Good. The Gabor filter used in this study is combined with the L*a*b space vector to increase accuracy in the segmentation process. The results showed that the use of texture features resulted in an increase in accuracy of 17.5% by testing the cluster value of 1.2.

Meningkatkan Kualitas Pendidikan dengan Pendekatan yang Kreatif dan Cerdas Hakim, Lutfi
SCHOLASTICA: Jurnal Pendidikan dan Kebudayaan Vol 5 No 1 (2023): Mei
Publisher : LP3M STITNU AL HIKMAH MOJOKERTO

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Dalam menghadapi tantangan masa depan yang semakin kompleks, pendekatan kreatif dan cerdas dalam pendidikan Islam menjadi kunci utama untuk mempersiapkan generasi muda menghadapi masa depan yang cerah. Dengan pendekatan ini, siswa akan memiliki pemahaman yang mendalam tentang ajaran agama Islam dan mampu mengaplikasikannya dalam kehidupan sehari-hari. Mereka juga akan memiliki keterampilan yang dibutuhkan untuk menghadapi perubahan dan tantangan yang terus berkembang. Mengimplementasikan pendekatan kreatif dan cerdas dalam pendidikan Islam membutuhkan kerja sama dan kolaborasi dari semua pihak terkait. Para pendidik, kepala sekolah, orang tua, dan masyarakat harus bekerja sama untuk menciptakan lingkungan pendidikan yang inovatif dan mendukung. Dengan demikian, kita dapat menciptakan masa depan yang cerah bagi generasi muda yang berakhlak mulia dan berwawasan luas, serta mampu menghadapi tantangan dan perubahan dengan kecerdasan dan kreativitas yang tinggi.

Etika Tasawuf Guru: Studi Pemikiran Imam al-Ghazali dan Syekh Muhammad Amin al-Kurdi Akh Syaiful Rijal; Hakim, Lutfi
TADRIS: Jurnal Pendidikan Islam Vol 16 No 1 (2021)
Publisher : State Islamic Institute of Madura

This study aims: (1) to identify how the ethics of teacher Sufism according to Imam al-Ghazali and Sheikh Muhammad Amin al-Kurdi; and (2) To find out how the teacher's Sufism ethical thinking compared between the two. This research method includes the type of library research. The main data sources are the book Ihya 'Ulumiddin, Ayyuhal Walad by Imam al-Ghazali, and the book Tanwirul Qulub by Sheikh Muhammad Amin al-Kurdi. The analysis uses content analysis and comparison methods. As a result, the ethics of teachers from the Sufism perspective according to Imam al-Ghazali and Sheikh Muhammad Amin al-Kurdi are in the form of ethical-religious so that the ethics of teachers are more directed at the Sufism behavior of a mursyid to his students. Second, the similarity of the teacher’ ethic based on Sufism perspective according to Imam al-Ghazali and Sheikh Muhammad Amin al-Kurdi is that the teacher must be care to their students and know their students’ intellectual competence. The difference, Imam al-Ghazali recommends that the teachers guide their students to be real human through an exemplary approach. Meanwhile, Sheikh Muhammad Amin al-Kurdi also emphasized compassion in interacting with students, but in internalizing values it uses a verbal approach, namely giving advice.

Soil Improvement Method on Body Foundation Dam (Main Dam) with Grouting Method DAM Construction Project (Rababaka Kompleks, West Nusa Tenggara) Hakim, Lutfi; Sari, Ribut Nawang; Sukatja
Journal of Global Engineering Research and Science Vol. 2 No. 2 (2023): Vol. 2 No. 2 (Desember 2023): Journal of Global Engineering Research & Science
Publisher : Jakarta Global University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/j-gers.v2i2.74

Cement injection under pressure, also known as grouting, is a process in which a liquid mixture is injected into cavities, cracks, and fractures in rock or soil under controlled pressure. The injected liquid undergoes physical and chemical transformations, eventually solidifying. This study aimed to evaluate the performance of various cement-water mixture designs, determine the required volume of grout based on the Lugeon number (Lv), and assess effective spacing intervals between grouting points by calculating grout effectiveness in percentages. Jet grouting, a proven method in diverse soil conditions, employs specialized equipment to hydraulically mix soil with grout, enabling soil stabilization and modification. The system is particularly effective in erodible soils, such as granular soils, and even in cohesive plastic clays. At the Mila Dam, grouting tests were conducted along the centerline of the main dam, specifically at the left abutment (Bukit Tumpuan Kiri) and the riverbed. Core drilling results from the Pilot Hole (BH-01) at a depth of 30 m revealed stratigraphic characteristics. The left abutment rock along the centerline of the dam predominantly consists of gray lapilli tuff overlaid by breccia-tuff rock units, which are brownish in color.

Implementasi Dan Evaluasi Manajemen Berbasis Sekolah Dalam Meningkatkan Kualitas Sekolah Hakim, Lutfi; Muid, Abdul; Anwar, Farikhul; Khoiriyah, Robihatul; Berti Ibmagara, Afridha
Jurnal Ilmu Pendidikan Islam Vol 22 No 03 (2024): Oktober
Publisher : FAKULTAS TARBIYAH UNIVERSITAS QOMARUDDIN GRESIK - JAWA TIMUR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36835/jipi.v22i03.4476

Education plays an important role in the development of society and the growth of individuals, with School-Based Management (SBM) being a relevant paradigm for improving the quality of education. This research uses a descriptive qualitative method to analyze the implementation and evaluation of SBM in an effort to improve school quality. Data were collected through documentation studies and analyzed inductively to identify important information related to SBM. The results show that SBM gives autonomy to schools to manage their own educational resources and programs, increases active participation from all relevant parties, and encourages continuous evaluation for improvement. The implementation of SBM can also improve transparency, accountability and the development of principals' leadership skills. However, challenges such as poor understanding of the concept and lack of resource support require attention. Evaluation of SBM provides an overview of changes in school quality and is an important tool for continuous improvement, which in turn contributes significantly to improving the quality of education

Implementation of IGG in IKMS Based on Entrepreneurship Programs in East Java Ala'uddin, M.; Hakim, Lutfi; Najib, M.; Alimin, Alimin; Khalim, Abdul
Ta'amul: Journal of Islamic Economics Vol. 1 No. 1 (2022): November
Publisher : Sekolah Tinggi Agama Islam Darul Ulum Banyuanyar Pamekasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58223/taamul.v1i1.3

The main objective of this research is to gain explanative knowledge regarding the application of IGG in IKMS based on entrepreneurship programs in East Java. This multi-case study approach sets five Micro Waqf Banks and five Islamic Financial Institutions Recipient of Cash Waqf (LKS PWU) as research objects. The results of the study concluded that IGG in IKMS based on entrepreneurial programs was carried out through behavioral characteristics that showed the principles of shiddiq, amanah, fathonah and tabligh. The forms of behavior of the shiddiq principle at IGG include: (1) independence in the management and distribution process; (2) information accountability; (3) The characteristics of the behavior of the principle of trust are: (1) the selection of responsible customers; (2) fair and equal implementation of Standard Operational Procedures (SOP); (3) consistency of Group Endorsement Examination (UPK), Group Compulsory Training (PWK), Weekly Halaqoh (HALMI) and the establishment of Community Business Groups around Indonesian Islamic Boarding Schools (KUMPI); In the third principle, the behavioral characteristics of the fathonah principle include: (1) guarantees for providing capital for entrepreneurs; (2) stipulation of policy on ujrah payment as infaq for mauquf 'alaih; (3) stipulation of a policy for depositing a special waqf account; Finally, the tabligh principle is manifested in the following behavioral characteristics: (1) transparency of information and data to all customers; (2) leadership of member managers and customers; (3) implementation of mentoring programs to increase product marketing online; (4) transparency of financial reports, evaluation reports and ZISWAF allocations and (5) competent managers who are nimble in improving customer skills

Co-Authors Abdul Muid Afiyat, Nur Ahmad Hanif Asyhar Akh Syaiful Rijal Ala'uddin, M. Alimin Alimin, Alimin Anwar, Farikhul Bagus Zaqqie Berti Ibmagara, Afridha Dianni Yusuf Dwi Wijanarko Fadhilla, Suri FAJAR SETIAWAN Gusminto, Eka Bambang Hadi Paramu Hadromi - Hamidah, Afanin Indarto, Tomi Khalim, Abdul Khoiriyah, Robihatul Kholifah, Anik Nur M. Najib Novitasari , Dian Candra Rini Novitasari, Dian C Rini Nur Syamsi Prakosa Rachwibowo Putri Oktavia, Nabiilah Putri, Risma Madurahma Rifqi, Mochamad Misbahur Samsuri Samsuri Sari, Ribut Nawang Sari, Silvia Kartika Sepyan Purnama Kristanto Sukatja Suparno Suparno Sutarto, Auditya Purwandini Syahputra, Orang Kaya Hasnanda Widiarso Dian Agus Yuniar Farida, Yuniar

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