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All Journal VALENSI Bulletin of Chemical Reaction Engineering & Catalysis JURNAL PASTI (PENELITIAN DAN APLIKASI SISTEM DAN TEKNIK INDUSTRI) Journal of Industrial Engineering Management
Rahmaniah Malik
Program Studi Teknik Kimia, Fakultas Teknologi Industri, Universitas Muslim Indonesia, Jl. Urip Sumoharjo KM 05, Makassar (90231)
Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Transportation

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ANALYSIS OF RATING SCALE MENTAL EFFORT (RSME) TO DETERMINE THE MENTAL WORKLOAD OF WORKERS AT SUGAR FACTORY IN SOUTH SULAWESI Rahmaniah Malik; Irma Nur Afiah; Muhammad Dahlan; Zakir Sabara HW; Taufik Nur; Risal Iswandi
Jurnal PASTI (Penelitian dan Aplikasi Sistem dan Teknik Industri) Vol 15, No 2 (2021): Jurnal PASTI
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (247.435 KB) | DOI: 10.22441/pasti.2021.v15i2.002

Abstract

Unconducive working conditions triggered fatigue and anxiety for the workers, such as an increase in mental workload. Mental workload is a work load that arises and can be seen from the work that has been carried out, which is formed cognitively (mind). Generally, mental workload is the difference between mental work demands and mental abilities possessed by the worker concerned. The level of workload of workers can be determined by applying workload analysis. One of the mental workload analysis methods is the Rating Scale Mental Effort (RSME) which is a method of mental workload measurement. The aims of this research are to determine the level of mental workload of workers, to identify the main causes of mental workload in the sugar production division, and also to provide suggestions to the company on the basis of identifying the mental workloads. The results of the study using workload analysis showed that the mental workload was quite high, i.e., the morning shift reached 97.3, the afternoon shift reached 101.8 and the night shift reached 99.66. The mental workload occurred due to continuous activities such as the sugar production process and excessively hot environment, as well as too high company targets.
Pengaruh Zat Aditif Urea terhadap Kuantitas Biodiesel Pada Reaksi Transesterfikasi Rismawati Rasyid; Ummu Kalsum; Rahmaniah Malik; Dadi Priyono; Azis Albar
Jurnal Kimia Valensi Jurnal Valensi Volume 4, No.1, Mei 2014
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (127.648 KB) | DOI: 10.15408/jkv.v4i1.1049

Abstract

Abstrak Asam lemak jenuh maupun tak jenuh pada minyak nabati memiliki potensi untuk diubah menjadi bahan kimia penyusun bahan bakar . Komponen asam lemak pada CPO RBD dengan komposisi terbesar adalah asam palmitat (38.2%) dan asam oleat (45.89%).  Pembuatan biodiesel dalam penelitian ini menggunakan CPO (Crude Palm Oil) yang telah dimurnikan melalui reaksi transesterfikasi dengan pereaksi etanol dan katalisator KOH. Penambahan urea sebagai zat aditif pada reaksi dapat meningkatkan kualitas biodiesel yang diperoleh serta lebih efisien dalam tahapan pemurnian. Persentase kadar FAME (Fatty Acid Metyl Ester) setara dengan persen yield biodiesel pada proses reaksi tanpa penambahan urea adalah 90.34% dan mengalami peningkatan setelah penambahan urea sebesar 98%. Densitas yang dihasilkan pada reaksi tanpa zat aditif  0.868 gr/ ml dan reaksi dengan penambahan zat aditif memiliki densitas  0.866 gr/ml,  kedua produk tersebut telah sesuai dengan standar SNI yakni berkisar 0.85–0.89. Kata kunci : biodiesel, CPO, zat aditif Abstract Saturated and unsaturated fatty acids in vegetable oils have potential to be converted into constituent of chemicals fuel. Fatty acids in the RBD palm oil with the largest composition are palmitic acid (38.2%) and oleic acid (45.89%). Production of fuel which substitute diesel fuel (biodiesel) from CPO (Crude Palm Oil) which has been purified by transesterification reaction with ethanol reagent and KOH catalyst. The addition of urea as an additive substancein the reaction to improve  the quality as well as more efficient biodiesel obtained in the purification stages. Percentage value of FAME(Fatty Acid Metyl Ester)or yield biodiesel in the reaction without the addition of urea is 90.34% and after the addition of urea increased by 98%. Density of product that produced in the reaction without additives is 0.868 g / ml and for reaction with additives has a density of 0.866 g / ml, both of these products are met the criteria of SNI  standards which ranged from 0.85 to 0.89. Keywords : Biodiesel, CPO, additive substance
Triglycerides Hydrocracking Reaction of Nyamplung Oil with Non-sulfided CoMo/γ-Al2O3 Catalysts Rismawati Rasyid; Rahmaniah Malik; Heri Septya Kusuma; Achmad Roesyadi; Mahfud Mahfud
Bulletin of Chemical Reaction Engineering & Catalysis 2018: BCREC Volume 13 Issue 2 Year 2018 (August 2018)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.13.2.734.196-203

Abstract

The purpose of this research are to study the temperature influence in hydrocracking process of the nyamplung oil (Calophyllum inophyllum) using a non-sulfided CoMo/γ-Al2O3 catalyst and to develop a simple kinetic model in interpreting the data of hydrocracking products. The experiment was carried out in a pressurized batch reactor operated pressure up 30 bar. The CoMo catalyst supported with γ-Al2O3 was prepared through impregnation method without sulfidation process. The operating temperature varied from 200 to 350 oC. The results show that the non-sulfided CoMo/γ-Al2O3 catalysts, nyamplung oil triglycerides can converted into gasoil and gasoline-like hydrocarbons. The triglyceride hydrocracking reaction of nyamplung oil followed a several stages, i.e., hydrogenation, dehydrogenation, and cracking. Based on the compounds contained in liquid product, hydrocracking reaction was dominated by decarboxylation. The products obtained in hydrocracking process of nyamplung oil are classified to gasoil (C11-C18) and gasoline (C5-C10).  The triglycerides hydrocracking reaction of nyamplung oil was assumed by following a series reaction mechanism and a simple kinetic model used for determined the kinetics constants. The highest reaction conversion is 99.10% obtained at temperature of 350 °C for 160 minutes reaction time. 
INTEGRASI TOTAL QUALITY MANAGEMENT DAN SUPPLY CHAIN MANAGEMENT TERHADAP KEUNGGULAN BERSAING DAN KINERJA PERUSAHAAN (STUDI PADA PT. SEMEN TONASA Rahmaniah Malik; Syahnur Said; Ahmad Padhil
Journal of Industrial Engineering Management Vol 4, No 1 (2019): Journal of Industrial Engineering Management Vol. 4 No. 1
Publisher : Center for Study and Journal Management FTI UMI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1018.55 KB) | DOI: 10.33536/jiem.v4i1.304

Abstract

Perusahaan yang bergerak dibidang industri semen yang menerapkan Total Quality Management (TQM) dan Supply Chain Management (SCM)  dapat menghasilkan kebutuhan sesuai dengan permintaan pelanggan. Penerapan kedua sistem tersebut berlaku bagi industry semen agar dapat bersaing dengan perusahaan lain. Penelitian ini bertujuan untuk menguji dan menganalisis pengaruh Total Quality Management (TQM) terhadap keunggulan bersaing dan kinerja perusahaan, dan Supply Chain Management (SCM) terhadap keunggulan bersaing dan kinerja perusahaan, serta pengaruh keunggulan bersaing terhadap kinerja perusahaan pada PT Semen Tonasa Pangkep, Sulawesi Selatan, Indonesia. Variabel TQM diukur dari 10 indikator, variabel SCM di ukur dari 6 indikator, variabel keunggulan bersaing di ukur dari 5 indikator dan variabel kinerja perusahaan di ukur dari 4 indikator yaitu balanced score card. Pengumpulan data dilakukan dengan cara membagikan kuesioner. Unit analisis penelitian adalah seluruh manajer menengah yang ada di setiap bagian/unit di PT Semen Tonasa. Responden yang dijadikan sampel sebanyak 122 orang. Metode analisis yang digunakan dalam menguji hipotesis adalah Structural Equation Modeling (SEM).  Hasil penelitian ini  membuktikan adanya pengaruh positif dan  signifikan antara Total Quality Management (TQM) terhadap Keunggulan Bersaing ,Total Quality Management (TQM) terhadap Kinerja Perusahaan, Supply Chain Management (SCM) terhadap Keunggulan Bersaing, Supply Chain Management (SCM) terhadap Kinerja Perusahaan, dan Keunggulan Bersaing terhadap Kinerja Perusahaan serta Pengaruh tidak langsung TQM dan SCM terhadap Kinerja Perusahaan melalui Keunggulan Bersaing.
DESIGN INFORMATION SYSTEMS OF PRODUCTION RESULTS IN THE RAJAWALI BROMO CONVECTION INDUSTRY, MAKASSAR Dirgahayu Lantara; Andi Pawennari; Ahmad Padhil; Rahmaniah Malik; Irma nur afiah; Astin Cahya
Journal of Industrial Engineering Management Vol 6, No 1 (2021): Journal of Industrial Engineering Management Vol. 6 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.v6i1.885

Abstract

The development of the era where everything is instantaneous and fast as it is today must be supported by the development of increasingly sophisticated information technology. One of the functions of this technological development is to obtain accurate and fast information. But in fact, there are still companies / organizations that have not used computer technology as a work aid, such as the Bromo Rajawali Convection which still uses the manual method of writing employee data, namely data storage still using books. Therefore, the design of an employee data management information system is carried out that can help companies control the production data of each tailor employee. The method used in this research is the Waterfall method. It is called a waterfall because the steps that are passed must wait for the completion of the previous stage and run sequentially, for example the design stage must wait for the completion of the previous stage, namely the requirements stage [1]. The Waterfall method consists of 5 stages, namely Analysis, Design, Coding, Testing and Maintenance. The purpose of this study is to design an information system that can make it easier for companies to write down employee production data accurately. From the design results, there are two factors that support the running of the system, namely administration and production data, the input form available on the system that has been designed, namely the login input form and the employee data input form, while the output form contains complete data related to employee personal data and employee production data. With the creation of a management information system in writing data on employee production, the Rajawali Bromo Convection can accelerate the search for more accurate data in the future, and applications made later by the company can be used properly as one of the employee production data systems
ANALISIS FAKTOR FAKTOR YANG MEMPENGARUHI MINAT WIRAUSAHA DIKALANGAN INDUSTRI KECIL DI KABUPATEN TOJO UNA UNA Rahmaniah Malik; Nadzirah Ikasari; Fardina Ekawaty Napu
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (284.866 KB) | DOI: 10.33536/jiem.v3i1.200

Abstract

Keberadaan perusahaan industri baru berimplikasi pada terciptanya lapangan pekerjaan yang membuka kesempatan kepada para pencari kerja. Perusahaan industri di Kabupaten Tojo Una-Una dapat dikelompokkan dalam beberapa kategori menurut banyaknya tenaga kerja yang digunakan yaitu : industri kerajinan rumah tangga jumlah tenaga kerja 1 s/d 4 orang, industri kecil dengan jumlah tenaga kerja 5 s/d 9 orang, industri sedang dengan jumlah tenaga kerjanya 20 s/d 100 orang, dan industri besar dengan jumlah tenaga kerja lebih dari 100 orang. Dalam menganalisis data yang telah dikumpulkan berupa observasi, wawancara, dan kuesioner. Data kemudian dianalisis dengan menggunakan metode SEM (Structural Equation Modeling) atau model persamaan terstruktur. Data hasil pengamatan dalam penyusunan tugas akhir ini berdistribusi normal, sebagaimana yang disyaratkan dalam metode SEM. Selain data yang berdistribusi normal data dalam pengamatan ini tidak ditemukannya outliers dan juga Multikolinieritas. Setelah syarat-syarat dalam metode SEM terpenuhi langkah selanjutnya yaitu mengistimasi model yang telah dibuat. Nilai uji Goodness of fit yang diperoleh Chi Square = 237,997; Probabilitas = 0,000; RMR = 0,044; GFI = 0,817; AGFI = 0,765; TLI = 0,642; CFI = 0,691; NFI = 0,446; RMSEA = 0,068. Dalam uji hipotesis variabel toleransi akan resiko tidak berpengaruh signifikan terhadap variabel motivasi wirausaha. Akan tetapi, variabel keberhasilan diri dan variabel kebebasan dalam bekerja berpengaruh signifikan terhadap variabel motivasi wirausaha.
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

Abstract

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.
SUPPLY CHAIN RISK ANALYSIS IN KUB – IK MATARAM MACOA WITH HOUSE OF RISK (HOR) Ahmad Padhil; Nurul Chairany; Arfandi Ahmad; Hardianti Ramli; Rahmaniah Malik; Anis saleh
Journal of Industrial Engineering Management Vol 6, No 2 (2021): Journal of Industrial Engineering Management Vol. 6 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.v6i2.942

Abstract

(KUB - IK ) Mataram  Macoa is a cocoa industry . The cocoa industry can produce chocolate with a cocoa material capacity of 87 kg per month or 1.0444 tons per year. Based on data from the Polewali Mandar Regency Statistics Agency, in 2018 the chocolate industry has a prospect that is still less proven with the data from BPS Polewali Mandar Regency, there is only 1 group of cocoa industry centers and the number of business units is 1 unit (BPS Polewali Mandar Regency, 2018).The company does not currently have a structured risk management to identify and mitigate risks that occur, especially in the supply chain function. By using the House of Risk method, the risks that may arise and their causes can be identified to simultaneously find ways to mitigate these risks to improve the operational quality of the Kelompok Usaha Bersama Industri Kecil Mataram Macoa  and open opportunities to detect profitable business opportunities for the company. The purpose of this paper is to determine the causes of the dominant risk and design response measures in the Kelompok Usaha Bersama Industri Kecil Mataram  Macoa. The basic method of writing is descriptive method and is implemented by using a case study method through a quantitative approach. The selection of respondents was carried out using purposive sampling technique. Methods of data collection by observation, in-depth interviews, questionnaires and literature study. The results of this paper indicate that in the activity plan there are 2 risks, in source activity there are 5 risks, in make activities there are 5 risks, in delievery activities there are 3 risks, and in return activities there is 1 risk. The risk treatment plan is designed to reduce the risk status for each risk event using a risk matrix
LAYOUT REDESIGN OF CONTAINER SHAKIGNG FIELD AT PT. XYZ Muhammad Nawir; Andi Pawennari; Ahmad Padhil; A. Dwi Wahyuni. P; Muhammad Dahlan; Takdir Alisyahbana Alisyahbana; Rahmaniah Malik
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.v7i2.1258

Abstract

The Layout of the Field Layout Stacking containers is an important thing to consider because it can affect the effectiveness of the loading and unloading process in the field by arranging the Layout of the facilities in the stacking field in the Yard Layout including the Rubber Gantry Crane (RTG) and the arrangement of the lane Head Truck. So, it is necessary to research determining the Layout of containers. The design that will be made will affect the distance the head truck travels to transport containers from the dock. In several studies, two types of determined, Layout have been container namely Parallel Layout where the containers are arranged parallel to the pier, and Perpendicular Layout where the containers are arranged Perpendicular to the pier. Container terminal Makassar New Port using Parallel Layout. To increase the productivity of the loading and unloading process, an analysis of the arrangement of the stacking field is carried out. From the results of the research, the farthest travel distance is 1,048 m, with a total travel distance of 729,269 m with a fuel cost of Rp. 1,144,952 in the initial Layout (Parallel Layout), with the Perpendicular Layout, the farthest travel distance is 353.7 m with a total travel distance of 473,533 m, and the use of materials burn 743,446.8 m
Co-Authors A.Dwi Wahyuni P Achmad Roesyadi Afiah, Irma Nur Ahmad Padhil Andi Pawennari Andi Pawennari Anis Saleh Arfandi Ahmad Astin Cahya Azis Albar Dadi Priyono Dirgahayu Lantara Dirgahayu Lantara, Dirgahayu Fardina Ekawaty Napu Hardianti Ramli HW, Zakir Sabara Irma Nur Afiah Irma Nur Afiah Iswandi, Risal Kusuma, Heri Septya Mahfud Mahfud Muhammad Dahlan Muhammad Dahlan Muhammad Nawir Nadzirah Ikasari Nurhayati Rauf Nurul Chairany Risal Iswandi Rismawati Rasyid Syahnur Said Takdir Alisyahbana Takdir Alisyahbana Alisyahbana Taufik Nur Taufik Nur Ummu Kalsum Yusril Mahenra Zakir Sabara HW