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All Journal Jurnal Energi Dan Manufaktur Jurnal Geomine Journal Of Chemical Process Engineering (JCPE) Journal of Industrial Engineering Management Journal Of Vocational Health Studies ILKOM Jurnal Ilmiah Jurnal GEOSAPTA Prosiding SAKTI (Seminar Ilmu Komputer dan Teknologi Informasi) Window of Community Dedication Journal Journal La Sociale Jurnal Abdimas Indonesia : Jurnal Abdimas Indonesia International Journal of Industrial Engineering and Engineering Management International Journal Mathla'ul Anwar of Halal Issues Journal Industrial Engineering and Management (JUST-ME) Scientica: Jurnal Ilmiah Sains dan Teknologi Journal Of Chemical Process Engineering Cognitia : International Engineering Journal Journal of Sustainability Industrial Engineering and Management System KREATIF: Jurnal Pengabdian Masyarakat Nusantara

Dirgahayu Lantara

Universitas Muslim Indonesia

Author-ID : 495924

Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering 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 Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Transportation Other

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PENENTUAN LAPISAN AKUIFER BERDASARKAN HASIL INTERPRETASI GEOLISTRIK (TAHANAN JENIS) DI DESA NONONG PROVINSI SULAWESI TENGAH Habibie Anwar; Sri Widodo; Muhammad Nur Alim; Emi Prasetyawati Umar; Dirgahayu Lantara; Arif Nurwaskito; Alam Budiman Thamsi
Jurnal Geomine Vol 6, No 2 (2018): Edisi Agustus
Publisher : Universitas Muslim Indonesia

Salah satu metode yang digunakan untuk mengetahui kondisi di bawah permukaan yang berkaitan dengan lapisan akuifer di Daerah Nonong Kabupaten Banggai Provinsi Sulawesi Tengah adalah metode geolistrik (tahanan jenis), dengan melakukan pengukuran tahanan jenis, analisis dan interpretasi data yang bertujuan untuk menentukan nilai resistivitas sebagai parameter dalam penentuan kedalaman, ketebalan lapisan akuifer dan penentuan lokasi yang baik untuk dilakukan pemboran. Metode geolistrik merupakan salah satu cara untuk mengetahui keberadaan akuifer, dengan menggabungkan data hasil geolistrik menggunakan konfigurasi sclumberger dan data geologi regional daerah penelitian untuk menentukan nilai tahanan jenis semu, selanjutnya diolah dengan menggunakan software Res2dinv ver. 3.53 untuk menentukan nilai tahanan jenis yang sebenarnya. Nilai resistivitas hasil inversi kemudian diinterpretasikan sebagai struktur bawah permukaan yang diperkirakan sebagai daerah prospek memiliki lapisan akuifer. Dari sembilan lintasan yang disurvei, secara umum pada daerah tersebut berpotensi mengandung air tanah, hal tersebut dapat dilihat dari nilai tahanan jenisnya yaitu 20-200 Ωm dengan kedalaman antara 20-210 meter di bawah permukaan laut dengan ketebalan rata-rata ±190 meter. Dari sembilan lintasan tersebut semua berpotensi untuk dilakukan pemboran.

Produksi Akrolein Dengan Proses Degradasi Menggunakan Gelombang Suara Dirgahayu Lantara; Ruslan Kalla; Izran Asnawi
Journal of Chemical Process Engineering Vol 4, No 2 (2019)
Publisher : Universitas Muslim Indonesia

Degradasi gliserol menjadi produk akrolein, menjadi salah satu topik penelitian yang menarik untuk dibahas mengingat kebutuhan dan permintaan akrolein yang cukup tinggi di Indonesia. Gliserol adalah bahan kimia penting yang murah dan mudah didapatkan di Indonesia, sementara akrolein merupakan salah satu senyawa kimia yang dapat dihasilkan dari proses pengolahan gliserol. Indonesia saat ini masih tergantung dari Impor akrolein, pada tahun 2008 akrolein yang masuk ke Indonesia sekitar 6.500 ton (BPS). Kebutuhan akrolein pada tahun 2020 disinyalir akan mencapai 10.800 ton. Nilai tersebut mengindikasikan bahwa akrolein masih dibutuhkan dalam jumlah yang besar. Berbagai macam proses yang selama ini digunakan untuk mendegradasi gliserol menjadi menjadi senyawa kimia yang lain masih dikategorikan sebagai proses yang membutuhkan waktu yang lama serta suhu dan tekanan yang tinggi, sehingga diperlukan metode alternative guna mengantisipasi kekurangan dari berbagai macam proses tersebut (hidrogenolisis, hidrotermal dan lain-lain). Metode yang dimaksud adalah penggunaan gelombang suara atau yang lebih dikenal dengan nama metode sonifikasi. Proses sonifikasi dilakukan dengan viriabel suhu 30 – 60 oC, dengan waktu sonikasi 20 – 40 menit, dimana katalis yang digunakan adalah asam sulfat konsentrasi rendah (1%) dengan rasio massa gliserol : air adalah 1 bagian gliserol berbanding 8 bagian air. Hasil yang diperoleh pada penelitian ini adalah konversi tertinggi sebesar 48,98 % yang dihasilkan pada waktu reaksi 40 menit dengan suhu reaksi 60 oC. Pada kondisi tersebut juga dihasilkan yield akrolein tertinggi sebesar 11,45 %.

Analisis Penerapan Lean Manufaktur Untuk Mengurangi Pemborosan Di Lantai Produksi PT. Eastern Pearl Flour Mills Makassar Nurul Chairany; Dirgahayu Lantara; Nadzirah Ikasari; Alfhyan Ukkas
Journal of Industrial Engineering Management Vol 3, No 1 (2018): Journal of Industrial Engineering Management Vol. 3 No. 1
Publisher : Center for Study and Journal Management FTI UMI

Pemborosan yang terjadi dapat mengakibatkan kerugian pada perusahaan, salah satu contoh kerugian yang dapat ditimbulkan karena adanya pemborosan adalah waktu penyelesaian produk yang lebih lama dibandingkan dengan yang sudah direncanakan tidak memberikan nilai tambah (non value added), maka yang menjadi tujuan untuk menghilangkan pemborosan di lantai produksi, dengan merancang VSM (Future State Map) yang sesuai dengan kondisi perusahaan dengan mengintifikasi weste dengan menggunakan metode 5W- 1H ( what, who, where, when, why dan how) Setelah dilakukan perancangan future valuue stream map sehingga waktu (current state map) menunjukkan bahwa total lead time adalah sebesar 2890.5 menit dan proses pada future stream map lead time sebesar 2.740,5 menit maka dari itu ada pengurangan proses waktu lead time sebesar 150 menit dengan takt time dari 0,10 menit/ unit, kapasitas produksi terpenuhi 359 ton/hari.

ANALISIS EFEKTIVITAS MESIN DENGAN METODE OVERALL EQUIPMENT EFFECTIVENESS DI PT. SINAR GOWA INDUSTRI Dirgahayu Lantara
Journal of Industrial Engineering Management Vol 4, No 2 (2019): Journal of Industrial Engineering Management Vol. 4 No. 2
Publisher : Center for Study and Journal Management FTI UMI

PT Sinar Gowa Industri is a company established in 2005, engaged in the food industry (noodles). The cessation of a production process is often caused by a problem in the production machine, for example, the engine stops suddenly, decreases the speed of production, the length of time setup and adjustments, the machine produces a defective product. TPM develops from a traditional maintenance system that involves all departments and all people to participate in and develop responsibilities in the maintenance of machinery / equipment. Steps to prevent or overcome the problem in business. Increasing production efficiency is done by using the Overall Equipment Effectiveness (OEE) method as a tool used to measure and determine the performance of machines / equipment. The results and analysis carried out by the OEE method on machines at PT. Sinar Gowa Industries studied were mixing machines, pressing machines, sitting machines, and steaming machines. It was concluded that the most effective and efficient machine in the production process was mixing machines and pressing machines, because it had an overall equity effectiveness value of 83.8 percent followed by a sitting machine that had a value of 53.29 percent and the last was seating machines with a value of 54, 89 percent.

DETERMINATION OF THE OPTIMAL NUMBER OF EMPLOYEES USING THE FULL TIME EQUIVALENT (FTE) METHOD AT PT. XYZ Arfandi Ahmad; Nurhayati Rauf; Yusril Mahenra; Takdir Alisyahbana; muhammad dahlan; Andi Pawennari; Dirgahayu Lantara; Rahmaniah Malik
Journal of Industrial Engineering Management Vol 6, No 3 (2021): Journal of Industrial Engineering Management Vol. 6 No. 3
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jiem.v6i3.1071

Determining the optimal number of employees in a company is a basic condition that must be concern into account when drafting a work plan. The work design process ultimately aims for balance the physical and mental aspects of humans in completing certain tasks so that. Determination of the number of employees whit the existing workload will support employees performance in perform their duties optimally. The purpose of this research is to determine the optimal number of salesman based on the workload calculated using the Full Time Equivlent method. Based on the results of research at PT. Xyz used the method FTE is know that the workload of the 4 salesman is classified as overloaded. Where is sales I has a workload of 1.48, sales II has a workload of 1.70, sales III has a workload of 1.66, sales IV get a workload of 1.42. Based on the table of labor requirements to the FTE value, the number of initial salesman was 4 sales and the addition of the number of salesman is as many as 10 salesmen. So, the optimal number of salesmen in Makassar city is 14 salesmen.

ANALISIS ALTERASI PADA ENDAPAN BIJIH BESI DI DAERAH TANJUNG, KECAMATAN BONTOCANI, KABUPATEN BONE, PROVINSI SULAWESI SELATAN Firdaus F; Tri Andriyani Kandora; Dirgahayu Lantara; Alam Budiman Thamsi; Harwan Harwan; Hasbi Bakri
Geosapta Vol 6, No 1 (2020): Januari 2020
Publisher : Universitas Lambung Mangkurat

Keberadaan bijih besi di Indonesia dapat ditemukan dibeberapa daerah dengan jumlah keterdapatan yang beragam. Salah satu daerah yang memiliki potensi keterdapatan bijih besi adalah daerah Bontocani, Kabupaten Bone, Sulawesi Selatan. Penelitian dilakukan untuk mengetahui himpunan mineral dan tipe alterasi endapan bijih besi. Metode yang dilakukan yaitu observasi singkapan, pengambilan sampel, dan identifikasi mineralisasi-alterasi yang selanjutnya dianalisis petrografi dan geokimia. Pengujian terhadap 5 sampel batuan melalui analisis petrografi dilakukan untuk mengetahui kelimpahan mineral penyusun dan analisis geokimia dari pengujian XRD (X-rayDiffraction) dilakukan untuk menentukan jenis mineral secara lebih spesifik yang tidak dapat dilihat melalui analisis petrografi, serta untuk menentukan himpunan mineral dan tipe alterasi. Himpunan mineral alterasi berdasarkan hasil analisis petrografi adalah plagioklas, kuarsa, kalsit, garnet, epidot, piroksin, serisit, augit, diopside, hornblende, feldspar, microcline, dan muskovit. Sedangkan hasil analisis XRD (X-rayDiffraction) menunjukkan kehadiran andradit, melanit, flourin, magnesit, alabandit, magnetit, cooperit, danalit, goetit, albit, hedenbergit, dolomit, cristobalit, wollastonit dan chromit. Berdasarkan beberapa mineral penciri tersebut dapat diketahui bahwa tipe alterasi di daerah penelitian adalah propilitik dan skarn. Kata kunci: Bijih Besi, Alterasi, Mineral, Petrografi, XRD.

DESIGNING AN INVENTORY MODEL FOR THE BEHAVIOR OF DEPENDENCE ON LPG GAS CONSUMPTION OF 3 KG USING THE DYNAMIC SYSTEM SIMULATION METHOD IN LUWUK BANGGAI REGENCY Izzul Aziz; Abdul Mail; Muhammad Nusran; Anis Saleh; Dirgahayu Lantara; Nurhayati Rauf; Muhammad Fachry Hafid
Journal of Industrial Engineering Management Vol 7, No 2 (2022): Journal of Industrial Engineering and Management Vol 7 No 2
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jiem.v7i2.1262

Liquefied Petroleum Gas (LPG) or more commonly known as LPG gas is a gas stove fuel that comes from the results of liquefied petroleum gas and is then put into a tube, one of which is a 3-kilogram tube. The behavior of dependence on the consumption of 3-kilogram gas cylinders from the people of Banggai Regency can be seen from the use of non-subsidized 3 kilogram LPG gas, namely (±) 32. 002 people/group, the second is the consumption rate from subsidies and non-subsidies, namely 38. 864 units from total users, namely (±) 45. 000 people/groups with a supply of 30. 800 units and the third about frequent scarcity in 2020 and early 2021 reported by Banggai News and Obormotindok. Simulation Method Dynamic systems are modeling and running simulations of real systems to analyze problems and present solutions from policy scenarios from the researcher's perspective. By using this method, researchers can identify the behavior of 3 kilograms of gas consumption from the rate of consumption and demand through tables and graphs using the Powersim Studio 7 software. The results of the study present 3 policy scenarios, namely the first scenario regarding an increase in the transition to 99% non-subsidized gas cylinders with simulation results, namely September 1 2021 - October 1 2022 the demand is fulfilled, the second scenario regarding the addition of a 7th agent with simulation results, namely September 1 2021 - April 1 2023 demand can still be fulfilled and the third scenario regarding an increase in the transition to 99% non-subsidized gas cylinders and the addition of a 7th agent with simulation results, namely 1 September 2021 – 1 September 2023 the demand for needs is fulfilled. The conclusion is that the third policy scenario will be taken because among the policy scenarios presented, the preparation of tube supplies is fulfilled within two years, namely September 1 2021 - September 1 2023.

WORKLOAD ANALYSIS TO DETERMINE THE NUMBER OF LABOR IN SOAP PRODUCTION USING THE FULL TIME EQUIVALENT METHOD: A CASE STUDY OF PT. XY Aisyah Fitri Wahyulistiani; M Tutuk Safirin; Tranggono Tranggono; Dirgahayu Lantara
Journal of Industrial Engineering Management Vol 7, No 3 (2022): Journal of Industrial Engineering and Management Vol 7 No 3
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jiem.v7i3.1322

PT. XY is a manufacturing company in Surabaya that produces household hygienic goods, such as soap bars and liquid soap. It is known that the actual condition of production in the company is still not optimal due to the uneven workload at each work station. This also results in workers experiencing excessive workloads that cause fatigue or illness, and there are more unemployed, causing decreased performance. According to the problems above, this research was conducted to determine the value of the workload received and to find out the optimal number of workers so that in the future work can be more effective and efficient. Solving workload analysis problems in this study using the Full Time Equivalent method. Based on the results of the study, it was known that the workload of the bar soap production section was 16 people, 3 people were found in the Normal category and 13 people experienced the workload in the Overload category. While the results of the workload of the liquid soap production section were 19 people, 6 people were found in the Normal category and 13 people experienced a workload in the Underload category. For calculating the optimal number of workers, the results obtained for the production of bar soap need to add 7 people to the workforce and liquid soap production to reduce the workforce by 3 people.

THE INFLUENCE OF EMPLOYEE SELECTION PROCESS ON EMPLOYEE PERFORMANCE AT THE CAMMING SUGAR FACTORY Dirgahayu Lantara; Abd Mail; A. Sriani Bulqis; Anis Saleh; Nur Ihwan Saputra; Rahmaniah Malik; Nurul Chairany; Taufik Nur
Journal of Industrial Engineering Management Vol 7, No 3 (2022): Journal of Industrial Engineering and Management Vol 7 No 3
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jiem.v7i3.643

Human resources are one of the resources that exist in the organization which consists of people and their activities this is the most resources compared to other resources. At the Camming Sugar Factory, human resources are the main means to achieve the desired goals of the company, especially in the production section in order to achieve maximum production results with the aim of maintaining the survival of the company and employees being able to perform optimally in the form of work productivity. To achieve this goal, qualified human resources are needed, one way is through a good and correct selection process. The performance of employees at the camming sugar factory is said to be less than good. This can be seen from the conditions that have occurred in the Camming sugar factory, namely the threat of bankruptcy with an average loss of more than Rp. 100 billion per year due to production results which are only 30 percent of the maximum potential since 2001. Based on the parameters that cause losses at the Camming Sugar Factory which is thought to be caused by weak management which is considered to be the main trigger, it is necessary to research and review what factors influenced the decline of the factory..The method used in this research is linear regression method, in which the method can determine the hypothesis and the relationship between the independent variable and the bound variable. The research results obtained from the coeficients table obtained a significance value of 0.000 0.05, so it can be concluded that the Selection variable (X) affects the Performance Variable (Y). From the statistical calculation of the t test, t count is 6,731 from t table then H1 is accepted and Ho is rejected. This means that there is a significant and positive effect of the employee selection process on the performance of employees at the Camming Sugar Factory. Thus the hypothesis is proven

ANALYSIS OF THE PHYSICAL WORKLOAD OF SUGARCANE HARVEST WORKERS AS THE BASIS FOR DETERMINING THE LENGTH OF REST BREAK AT BONE ARASOE SUGAR FACTORY Irma Nur Afiah; Dinda Dwi Adelya Musda; Dirgahayu Lantara; Arfandi Ahmad
Journal of Industrial Engineering Management Vol 8, No 1 (2023): Journal of Industrial Engineering and Management Vol 8 No 1
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jiem.v8i1.1278

Arasoe Bone Sugar Factory is one of the sugar factories in Bone Regency, South Sulawesi. The production process at this company entirely uses machines that run automatically. However, the sugarcane harvesting activity is still carried out manually. All sugarcane harvesting activities result in physical workload on workers, especially when lifting sugarcane since in one loading, the workers are able to lift more than 30 kg of sugarcane. This activity is carried out repeatedly which results in fatigue on the harvest workers. The other factors that affect fatigue on the harvest workers are the harvested sugarcane plantations that can reach approximately 7 hectares in area and the work that lasts for 7 hours each day. This study aims to determine how much physical workload is experienced by sugarcane harvest workers and to determine how long the rest break is based on the physical workload that is obtained while working for the sugarcane harvest workers. The assessment of physical workload was carried out using the Cardiovascular Load (%CVL) method and the calculation of the length of rest break was carried out using a physiological approach. Based on the results of calculating the percentage of Cardiovascular Load (%CVL), it was discovered that all respondents experienced fatigue consisting of 5 workers with a %CVL of 60%, 13 people with %CVL of 80%, and 2 people with %CVL of 100%. Therefore, all respondents were included into the category of heavy physical workload. The optimal rest break is 80.79 minutes, while the rest break given is only 60 minutes. Hence, an additional 20.79 minutes of rest break is needed. The rest break of 20.79 minutes is used for spontaneous breaks, i.e., short break after the workload.

Co-Authors A. Pawennari A. Sriani Bulqis Abd Mail Abdul Mail Afiah, Irma Nur Ahmad Padhil Ahmad, Arfandi Aisyah Fitri Wahyulistiani Alam Budiman Thamsi Alfhyan Ukkas Andi Pawennari Anis Saleh Anis Saleh Arfa, Arief Darmawan Arfandi Ahmad Arif Nurwaskito Aslan Risyaldi Bakri, Hasbi Bannya, Fahrul Hidayat Bella, Anandita Cahya, Astin Dinda Dwi Adelya Musda Faisal AR Pelu, Muhammad Firdaus F Habibie Anwar Hafid, Muhammad Fachry Harlinda Lahuddin Harlinda, Harlinda Harwan Harwan Ikasari, Nadzirah Indrawati Indrawati Irma Nur Afiah Izran Asnawi Izzul Aziz Lokapitasari Belluano, Poetri Lestari Lutfiah Putri Mahendra, Kresna Adi Mochamad Tutuk Safirin MT Safirin Muhammad Budi Adiputra Reski Muhammad Dahlan Muhammad Dahlan Muhammad Fachry Hafid Muhammad Faisal AR Pelu Muhammad Luthfi Muhammad Nur Alim Muhammad Nusran Muhammad Nusran Nadzirah Ikasari Nasir, Nursalbiah Nasruddin Nasruddin Nur Ihwan Saputra Nurhayati Rauf Nurmiati Muchlis Nurul Chairany Nusran, Muhammad Pawennari, Andi Prasetyawati Umar, Emi Rahmaniah Malik Rahmaniah Malik Rahmaniah Malik Reski, Muhammad Budi Adiputra Ruslan Kalla Ruslan Kalla, Ruslan Safira Amatullah, Fira Saputra, Nur Ihwan Sarunggaga, Amaliah Cinta snawi, Izran A Sri Widodo Takdir Alisyahbana Taufik Nur Tirkaamiana, Dean Tranggono Tranggono Tri Andriyani Kandora Tuasamu, Fatima A.R Yan Herdianzah Yusril Mahenra

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