BERKALA SAINSTEK
Not a member yet
254 research outputs found
Sort by
Risk Analysis of the Causes of Delay in Ship Construction (Case Study of KM CL 9E Ship Construction)
Get PDFIn shipbuilding work, the risk of delays must be analyzed and anticipated so that such delays do not occur and cause losses for both parties. This study aims to calculate the risk of a shipbuilding project using the Failure Mode and Effect Analysis (FMEA) method. The final result obtained is the result of the calculation of the Risk Priority Number (RPN) in determining what risks can af fect shipbuilding work. There are two jobs with RPN value > 200 which are classified as High Risk namely errors in lofting and damage to the pulley block as a supporting tool. The plans for risk management with the highest RPN value are then discussed with th e shipyard. Risk mitigation is carried out on the possible risk of errors in lofting, namely by adding worker personnel in the loft ing workshop who serve as supervisors and examiners. While the risk of breakage of the trough can be overcome by paying attention to the inventory and also the condition of the tool
Analysis of Two Dimensional Sensitivity as Decision Support Alternative Waste Management in TPST Bantargebang
Get PDFThe importance of waste management at the TPST Bantargebang Bekasi is very high. Some sensitive issues such as pollution, social issues, and the requirement of wider area are several issues needed to be considered further. Therefore, this study tries to highlight the best alternative in waste management at the TPST Bantargebang with a two-dimensional approach using AHP (Analytical Hierarchy Process) analysis. Through a two-dimensional approach, it is hoped that adequate priority options can be found regarding alternative integrated waste management at the TPST Bantargebang Bekasi. Collecting data through expert interviews assisted by questionnaires, supported by other sources of data and information from various relevant agencies. The results of the two-dimensional sensitivity graph from the iteration of the three-goal criteria pair, namely waste management innovation, expansion of the TPST area, and strengthening regulations show that alternative decisions in integrated waste management at the TPST Bantargebang several times have raised alternatives to increase Human Resources (HR) to support activities. In conclusion, the most important alternative decision is to increase human resources. The policy implication of this study is that it is necessary to add more educated staff at the Bantargebang TPST so that the target of serving the needs of the community in terms of waste management can be carried out effectively, therefore, increasing human resources both in terms of competence and number is a priority to support the development of integrated waste management at the TPST Bantargebang
Mobile Tracking Membership Application on PT. LP Expedition Denpasar
Get PDFPT. LP is a company engaged in freight forwarding which currently has 3500 partners spread throughout Indonesia and one of them is in Denpasar City. Customers owned by PT. The prison located in Denpasar City currently has more than 200 people. However, because PT. LP has not utilized technology in its entire business process, causing several activities at PT. LP becomes ineffective and efficient. Customers are often confused when they want to use a pickup service and cannot find out where the package is sent, because there is no facility to track the status of the package. When the customer wants to pick up the packages, the customer must first confirm via WhatsApp to the admin, include the address where the packages are picked up and also if the customer wants to make a cashless payment, the customer must contact the admin to ask for an account number. In addition, whenever PT. LP held a promo, the information did not reach all customers. The purpose of this research is to provide a solution to these problems by building a membership tracking mobile application which will later be able to help PT. LP to simplify and speed up the process of pickup, tracking the packages, and payments. This study uses the waterfall method and chooses Android as the platform used. The results of this study are an Android-based mobile tracking application that has features of packages pickup, tracking of the packages to be picked up, providing information and promo notifications to customers, and payment features
Hazards Identification and Risk Assessment In Welding Confined Space Ship Reparation PT. X With Job Safety Analysis Method
Get PDFPT X is a docking and shipyard company with experience in repairing various types of ships. Dangers and risks are always exist in every job including ship repair. Therefore, it is necessary to identify hazards and risk assessments. Welding in a confined space includes work that is a source of danger that has the potential to threaten the lives of workers in the ship repair process because access to and exit is limited and is not made to be a continuous work place. The purpose of this study is to identify hazards and assess risks in PT X ship repair confined space welding. The method used in hazard identification and risk control is Job Safety Analysis (JSA) with direct field observations and calculation of likelihood, concequences, and risk values. score on risk assessment according to AS/NZS 4360:2004 and with expert judgment. The results of this study identified that there were 49 potential hazards, then a risk assessment was carried out and there were 36 risks at low risk levels and 13 risks at moderate risk levels. The recommendations given include: using PPE and suction blowers when working, not entering the tank before it is declared safe, taking safety briefings seriously and worker absenteeism, tidying up cables and placing them in a safe position, ensuring workers' hands are dry when in contact with electricity, paying attention to attitude working conditions and conditions around the work area to always be aler
Implementation of K-Means Clustering Method for Trend Analysis of Thesis Topics (Case Study: Faculty of Computer Science, University of Jember)
Get PDFThe development of information technology causes a large number of digital documents, especially thesis documents, so that it can create opportunities for students to take the same and not varied topics. Thesis documents can be grouped by topic by identifying the abstract section. The results of the grouping can be seen with the trend with data visualization so that it can be analyzed to find out the trend of each topic. Retrieval of data in the repository of the University of Jember through a web scraping process as many as 490 thesis documents for students of the Faculty of Computer Science, University of Jember. The preprocessing stage is carried out by text mining methods which include cleaning, filtering, stemming, and tokenizing. Then calculate the weight of each word with the Term Frequency - Inverse Document Frequency algorithm, followed by the dimension reduction process using the Principal Component Analysis algorithm, which is normalized by Z-Score first. The outliers removal process is carried out before classifying documents. Furthermore, document grouping uses the K-Means Clustering method with Cosine Similarity as the distance calculation and the Silhouette Coefficient algorithm as a test. The test results were carried out with various k values and the optimal value was obtained at k = 2 with a Silhouette value of 0.80. Then the topic detection uses the Latent Dirichlet Allocation algorithm for each cluster that has been formed. Each cluster is visualized with a line chart and Trend Linear algorithm and analyzed to find out the trend. From the results of the analysis, it can be concluded that the topic of Decision Support System Development is trending down, and the topic of IT Performance Measurement and Forecasting is trending up. It can be concluded that the topic of Decision Support System Development needs to be reduced so that other topics can emerge
Performance of Ceramic Membrane Modified with Corncob Activated Carbon for Efficient Remazol Red Removal in Batik Wastewater
Get PDFA ceramic membrane modified with corncob activated carbon (CMCC) has been successfully prepared and used to reduce the concentration of remazol red in batik wastewater. This research aims to study the effect of corncob activated carbon (CC) in the ceramic membrane on the porosity of the ceramic membrane and its ability to reduce the concentration of remazol red dye in batik wastewater. The variation of % CC to the mass of clay used was 0%, 5%, 10%, 15%, 20%, and 25%. Characterization of CC includes ash content and characterization of CMCC includes porosity test, morphological analysis, and elemental distribution based on SEM-EDX. The results showed that the ash content of CC before and after activation was 5.625% and 2.974%, respectively. The CMCC porosity test results showed that the more CC added, the greater the porosity of the ceramic membrane. The elemental composition in CMCC is dominated by O, Si, Al and C. The addition of 10% CC obtained the optimum composition on a ceramic membrane. % removal of remazol red is 83.9%. The COD values of batik wastewater before and after processing with CMCC were 484.286 and 26,339 mg/L, respectively
Habitat Characteristics of Long-Tailed Macaque (Macaca fascicularis Raffles, 1821) in Kucur Resort at Alas Purwo National Park
Get PDFThe Long-Tailed Macaque (LTM) (Macaca fascicularis Raffles, 1821) is a member of the Cercopithecidae which is included in the Vulnerable status. Information on the habitat characteristics of these species is needed to support in-situ conservation efforts. This study aims to determine the habitat characteristics of LTM in Kucur Resort at Alas Purwo National Park (APNP) based on the forest strata occupied by the LTM, Normalizes Difference Vegetation Index (NDVI), and river distance. The research procedure begins with a preliminary survey to determine the six lines of observation. The data used are primary data (LTM encounter points, forest strata they occupy, and data on tree species where they meet) and secondary data (NDVI variables and river distance). Both data were analyzed using a Geographic Information System (GIS) approach. The results showed that the LTM at Resort Kucur TNAP was found in four different groups. The results of data analysis show that the habitat characteristics of the LTM in Kucur Resort based on the forest strata it occupies are at a tree height level of 0-30 meters (strata E-B) which has branches, canopies, and produces young leaves and fruits. Furthermore, the LTM habitat has vegetation characteristics with medium density and cover which has an NDVI value of 0.3-0.5. This indicates the character of this habitat is used as a place to rest, socialize, and avoid from predators. Based on the distance of the river, the habitat characteristics are the location which is quite far from the river, which is > 300 meters. Based on the data on the habitat characteristics of LTM, it shows that Kucur Resort provides a fairly good habitat for the LTM
Fuzzy Employee Placement Suitability Assessment using Mamdani Fuzzy Method
No full textFor a company, employees are the spearhead for the company because they have a function as Customer Service, customer satisfaction is obtained after interacting with the company through the performance of its employees. Employees are expected to meet all customer needs with the applicable regulations in the company and become a source of income for the company. To get reliable employees, one way is to assess the suitability of their placement in the appropriate position. With the assessment of the suitability of positioning, companies can consider and determine the provision of rewards, promotions, punishments, training, coaching, counseling, or transfers for their employees. The choice of method used to assess the suitability of employee placement in a company is Fuzzy Mamdani. With the Fuzzy Mamdani method, a system that is completely measurable and human assessments that tend to be immeasurable can be bridged. Assessment of the suitability of employee placement using the resulting fuzzy method, is expected to be an alternative solution for companies to give positions to their employees
Design of a Falling Ball Speed Measuring Instrument in Viscosity Experiment Using Arduino UNO ATmega
Get PDFViscosity experiments in universities generally use falling ball method with manual observations. Measuring travel time of iron ball from one point to another manually using a stopwatch can cause a large error. This problem can be solved by designing a digital falling ball viscometer using infrared and photodiode configured with Arduino. Infrared and photodiode pairs are placed in the top and bottom glass tubes to detect the movement of iron ball so that it produces a change in voltage. This voltage change is used to mark start and stop times in time measurement. The time measurement obtained is then used to calculate speed of the ball through the formula for distance between sensors divided by time. Data obtained is then entered into viscosity formula of falling ball method to obtain viscosity value of fluid (oil). The digital falling ball viscometer is accurate when error obtained is less than 5%. The results obtained are the error of the digital viscometer measurement results are better than the error of the manual viscometer. The highest error obtained from the digital viscometer is 4%, while the lowest is 1%. This indicates that the digital falling ball viscometer has a high enough accuracy so that data obtained is in accordance with the reference and can be used as a viscosity experiment tool using falling ball method