Jurnal Online Teknologi Industri (UMI FTI - Fakultas Teknologi Industri, Universitas Muslim Indonesia Makassar)
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THE INFLUENCE OF EMPLOYEE SELECTION PROCESS ON EMPLOYEE PERFORMANCE AT THE CAMMING SUGAR FACTORY
Get PDFHuman 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 prove
Uji Karakteristik Magnesium Fosfat dari Pelarutan Mineral Dolomit dengan Asam Fosfat
Get PDFInti SariMagnesium fosfat (Mg3(PO4)2) adalah senyawa organik yang terbentuk dari garam magnesium yang berasal dari asam fosfat (H3PO4) dengan kata lain, unsur magnesium yang melapisi antara anion fosfat. Selain itu magnesium fosfat saat ini dibutuhkan oleh industri, khususnya pada bidang material maju dan biologis. Namun hal yang menjadi kebutuhan saat ini adalah mahalnya harga bahan dasar yang mengharuskan impor. Mineral dolomit tersebar melimpah di Indonesia, dengan kandungan kalsium (Ca) dan magnesium (Mg) di dalamnya, sehingga dapat dijadikan sebagai bahan dasar alternatif sintesis magnesium fosfat. Tahapan-tahapan dalam pembuatan magnesium fosfat adalah kalsinasi, pelarutan mineral dolomit dengan asam fosfat menggunakan metode extraction-aeration, dan proses terakhirnya adalah kristalisasi. Variabel penelitian menggunakan variasi konsentrasi asam fosfat (H3PO4) yaitu 8N dan 10N serta laju alir udara 1, 2, dan 3 L/menit. Hasil yang dipaparkan adalah mengenai karakteristik magnesium fosfat yang diperoleh menggunakan metode XRF (X-Ray Fluorensence) dan SEM-EDX (Scanning Electron Microscope – Energy Dispersive X-Ray). Dari hasil tersebut dapat dijadikan sebagai acuan karakteristik dari magnesium fosfat yang diperoleh dari sintesis mineral dolomit. AbstractMagnesium phosphate (Mg3(PO4)2) is an organic compound formed from magnesium salts derived from phosphoric acid (H3PO4) in other words, elemental magnesium that is sandwiched between the phosphate anions. In addition, magnesium phosphate has been needed by industry, especially in the field of advanced and biological materials. However, what is currently needed is the high price of basic materials that require imports. The mineral dolomite is widely distributed in Indonesia, contains calcium (Ca) and magnesium (Mg) in it so that it can be used as an alternative base material for the synthesis of magnesium phosphate. The steps in the manufacture of magnesium phosphate are calcination, dissolution of dolomite minerals with phosphoric acid using the extractionaeration method, and the last process is crystallization. The research variables used variations in the concentration of phosphoric acid (H3PO4), namely 8N and 10N, and airflow rates of 1, 2, and 3 L/min. The results presented regarding the characteristics of magnesium phosphate obtained using the XRF method (X-Ray Fluorensence) and SEMEDX (Scanning Electron Microscope–Energy Dispersive X-Ray). From these results, it can be used as a reference for the characteristics of magnesium phosphate obtained from the synthesis of dolomite minerals
WORKLOAD ANALYSIS TO OPTIMIZE LABOR OF TOFU FACTORY X WITH WORK LOAD ANALYSIS AND WORKFORCE ANALYSIS METHODS
Get PDFTofu factory X is one of the industries in the food sector. This factory processing soybeans into tofu. Tofu factory X is one of the tofu factories located in Depok, West Java. The problems that occur in this factory are the working hours that exceed the normal limit and do not achieve the optimal productivity levels due to the factory's inability to fulfill all demands, for this reason this research aims to calculate the workload of each worker in order to know the optimal number of workers according to the workload with Work Load Analysis and Workforce Analysis method, after that, a cost analysis is carried out to assist decision making. Based on the results of the analysis, it is found that there are 4 workers who have a workload that exceeds the normal limit, there are operator 1 with 124%, operator 4 with 116%, operator 5 with 112%, and operator 7 with 111%. The calculation of the optimal workforce using the Workforce Analysis method shows that the workers of the tofu factory X are advised to add 4 people to each work station with excessive workloads. Based on the cost analysis, the alternative with the lowest cost was chosen by adding overtime hours with details of the costs that came out per two months amounting to RP.5.271.676.
OPTIMIZATION OF DETERMINING MAINTENANCE INTERVALS WITH THE MARKOV CHAIN METHOD TO MINIMIZE MAINTENANCE COSTS IN PT. BBI
Get PDFPT BBI is a company engaged in producing machinery, industrial equipment, and foundry. PT BBI has overgrown as a company that focuses on manufacturing and delivering products such as oil and gas/refinery/petrochemical industries, power plans, iron castings, precision machinery centers, etc. PT BBI uses various kinds of machines to support its production process. Some devices have often experienced damage and caused downtime in recent years, namely radial drilling machines and overhead cranes. In addition, machine damage also causes cost overruns due to damage that can harm the company. Engine damage caused is due to the company's poor maintenance policy. Judging from these problems, planning a maintenance system with a suitable method will help the machines and production equipment owned by PT. BBI is protected from damage that occurs periodically. The Markov Chain method was chosen because it has advantages over other maintenance methods because it produces more optimal maintenance costs with a regular maintenance scheduling system. The processing results obtained a total savings of 33% by applying the Markov Chain proposed maintenance method with maintenance intervals every 5 months for radial drilling machines and once every 3 months for 10T overhead crane
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
Get PDFLiquefied 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
Indication Of Hydrothermal Alteration Based On Petrography Of Granit Garba (KGR), Tanjung Beringin Village, Muaradua District, South Sumatera
No full textThe research was conducted in Tanjung Beringin Village, Muaradua District, South OKU Regency, South Sumatra. The location of this research is geologically located in the basement of the South Sumatra Basin which composes the Garba Mountains, namely Granit Garba. Granit Garba is an intrusion rock with the youngest age among the basement rocks forming the South Sumatra Basin. The lithology that composes this formation is a granitoid rock with interesting constituent mineral characteristics and there are indications of hydrothermal alteration processes that affect rock formation. The characteristics and hydrothermal alteration of these granitoid rocks can be identified using petrographic analysis of rock thin sections. Based on the petrographic analysis, it is interpreted that there are two groups of granitoids that make up Granit Garba. The two groups of granitoids are quartz monzonite and granodiorite. The difference between the two types of rock lies in the composition of the main mineral constituents. Quartz monzonite is a rock with minimal quartz composition and relatively the same percentage of plagioclase and alkali feldspar. Meanwhile, granodiorite has more quartz composition than quartz monzonite with relatively more plagioclase minerals than alkali feldspar minerals. The appearance of the thin section in the petrographic analysis of the rock also shows the influence of hydrothermal alteration as evidenced by the presence of secondary minerals. These secondary minerals form associations that occur in the phylic and propylitic zones. The phyllic zone is indicated by the presence of sericite, chlorite, and opaque minerals in the form of pyrite, while the propylitic zone has an assemblage of epidote, chlorite, and calcite minerals
Determination Of Relative Error in Coal Resource Classification Based On Geostatistical Drill Hole Spacing Analysis: A Case Study of Coal Deposits at Batang Hari, Jambi
No full textGenerally, the determination of resource classification is only qualitative based on the geometric factors and geological complexity that control it. However, as the prospect area is found to have a reasonably heterogeneous sediment characteristic, a method is needed that can be used to increase the level of confidence in determining the Optimum Drill Hole Spacing. Therefore, this study uses the application of geostatistics with the global estimation variance (GEV) method based on the relative error value of each parameter, namely the thickness geometry and quality in the form of Ash and VM. This research was carried out in Jangga Aur village, Bathin XXIV District, Batang Hari Regency, Jambi Province, Working Area of PT Berkat Bara Persada Jobsite PT Inti Bara Nusalima.The Drill Hole Spacing Analysis (DHSA) results will obtain optimum spacing on resource classification based on relative error values, namely 0-10% for measured resources, 10-20% for indicated resources, and 20% for Inferred resources carried out the on-seam reference. Based on the results of the study, it was found that the seam reference used was Seam D, then the spacing distance of the drill hole on the coal seam of the research area, which had an average distance of 80 m, with geostatic analysis could be increased up to a distance of 250 m in measured resources, indicated resources of 450 m and Inferred 800 m
Identifikasi Struktur Geologi Daerah Sijunjung, Kabupaten Sijunjung, Sumatera Barat
No full textArea studi terletak di Sijunjung, dan secara tektonik berada di cekungan Ombilin yang dianggap sebagai intramountain basin atau cekungan sedimen yang berada di jalur pegunungan Bukit Barisan. Pemetaan geologi telah dilakukan sebelumnya, dan studi ini melakukan evaluasi struktur dengan mengintegrasikan data lapangan dan hasil interpretasi lineament melalui citra Digital Elevation Model (DEM) dengan menggunakan aplikasi ArcGIS dan perangkat lunak PCI-Geomatica. Hasil analisis citra memperlihatkan arah pola kelurusan umum NW-SE, dan orientasi ini terlihat konsisten dengan arah umum struktur geologi yang berkembang di daerah penelitian, terutama sesar Padangdoto, sesar Aie Angek, dan sesar Takung. Pola lineament dan sebaran sesar yang keduanya mengarah NW-SE dapat diinterpretasikan bahwa struktur geologi di daerah penelitian kemungkinan dipengaruhi oleh gaya transtensional yang ditimbulkan oleh pergerakan sesar aktif di sepanjang pegunungan Bukit Barisan
Kajian Struktur Geologi Daerah Muaro, Kabupaten Sijunjung, Sumatera Barat
No full textSumatera memiliki orientasi fisiografi berarah Baratlaut dan terletak dibagian Baratdaya Lempeng Hindia-Australia dan di Selatan Lempeng Eurasia. Pulau Sumatera terbentuk akibat pertemuan antara dua lempeng, yaitu Lempeng Indo-Australia yang menunjam kebawah Lempeng Eurasia. Desa Muaro, Kabupaten Sijunjung, Sumatera Barat berada pada Cekungan Ombilin yang keterbentukannya dipengaruhi oleh sesar mendatar Sumatera dan diinterpretasikan sebagai intramontane basin yang terbentuk akibat adanya pergerakan tensional dari Sistem Sesar Sumatera. Metode yang dilakukan dalam penelitian berupa pemetaan geologi yang berfokus pada struktur geologi dan analisis kelurusan berdasarkan Digital Elevation Model (DEM) terhadap observasi lapangan. Analisis kelurusan dilakukan menggunakan data citra DEMNas (Digital Elevation Model) yang kemudian di ekstraksi pada aplikasi ArcGIS 10.3 dan PCI-Geomatica. Pola kelurusan yang di dapatkan digunakan untuk menggambarkan korelasi antara arah kelurusan dengan struktur geologi pada daerah penelitian. Tujuan penelitian dilakukan yaitu untuk mengkorelasikan hasil analisis hubungan antara pola kelurusan dengan hasil observasi lapangan. Hasil analisis DEM menunjukan pada daerah penelitian memiliki pola kelurusan relatif berarah baratlaut-tenggara yang kemudian ditunjukkan dengan keterdapatan struktur geologi berupa Antiklin Kabun, Sinklin Silokek, Antiklin Kabun, dan Sesar Kabun. Hasil analisis menunjukan bahwa hubungan antara pola kelurusan dengan keterdapatan struktur geologi dilapangan relatif sama. Hal ini juga diakibatkan oleh adanya aktivitas tektonik yang membentuk gaya kompresi dengan arah relatif utara-selatan
Dealuminasi Zeolit Daerah Moncongloe Kabupaten Maros Provinsi Sulawesi Selatan Dengan Menggunakan Asam Sulfat
No full textZeolit adalah mineral aluminosilikat terhidrat yang memiliki struktur berongga sehingga dapat digunakan sebagai bahan penyerap. Sifat absorben zeolit ini berguna dalam menyerap zat-zat beracun seperti amoniak dan logam berat, sehingga dapat digunakan sebagai imbuhan pakan ternak, tambak, penjernihan air limbah dan penjernihan minyak kelapa sawit. Akan tetapi, umumnya zeolit yang digunakan merupakan jenis zeolit alam yang memiliki rasio Si/Al rendah dan kandungan mineral pengotor yang relatif tinggi sehingga dapat mengurangi kemampuan absorpsi zeolit. Salah satu metode aktivasi zeolit adalah dealuminasi secara kimia yaitu proses penurunan kandungan Al pada struktur kristal zeolit untuk meningkatkan rasio Si/Al. Tujuan penelitian ini adalah untuk mengetahui komposisi mineralogi dan kimia zeolit. Selanjutnya percobaan dealuminasi zeolit dilakukan dengan menggunakan pelarut asam sulfat dengan variabel konsentrasi dan suhu. Hasil analisis menunjukkan zeolit mengandung mineral feldspar, klinoptilolit, mordenit, dan kuarsa, Komposisi kimia didominasi oleh SiO2 dan Al2O3. Hasil percobaan menunjukkan rasio Si/Al mengalami kenaikan dari 1,09 menjadi 1,29 yang diperoleh pada konsentrasi H2SO4 1,5 M dan suhu 100