17 research outputs found
KONFIGURASI HUBUNGAN ANTARA SISTEM PRODUKSI, STRATEGI BISNIS, LINGKUNGAN KOMPETITIF DAN BUDAYA ORGANISASI PADA PERUSAHAAN MANUFAKTUR
No full textThis research discusses about the relationship between production system, business strategy, competitive environment and organization culture at manufacturing industry. The relationship is developed by using a method standar of cluster analysis based on four types of production system, six types of business strategy, four types of competitive environment and four types of organization culture.To do this research, fifty companies were surveyed through face to face interviews to get data about production system type, business strategy type, competitive environment type and organization culture type. Four kinds of relationship between production system, business strategy, competitive environment and organization culture were observed.Keywords : Production system, Business strategy, Competitive environment, Organization cultur
MODEL AHP/DEA UNTUK MENGUKUR EFISIENSI PENGGUNAAN TEKNOLOGI GAS BUANG RUMAH TANGGA RAMAH LINGKUNGAN
No full textDalam makalah ini diperkenalkan sebuah model AHP/DEA untuk mengukur efisiensi penggunaan teknologi gas buang rumah tangga ramah lingkungan. Model ini merupakan sebuah model yang mengintegrasikan antara AHP dan DEA yang merupakan salah satu dari metode multi-criteria decision making (MCDM). Metode ini merupakan salah satu prosedur saintifik yang dapat digunakan untuk mengukur penggunaan teknologi gas ramah lingkungan.
Kata kunci: AHP, DEA, teknologi gas ramah lingkungan.
Abstract
This paper introduced a model of AHP / DEA to measure the efficiency of the use of exhaust gas technology environmentally friendly household. This model is a model that integrates the AHP and DEA, which is one of the methods of multi-criteria decision making (MCDM). This method is a scientific procedure that can be used to measure the use of environmentally friendly gas technologies.
Keywords: AHP, DEA, environmentally friendly gas technologies
Analytical Approach for Linear Programming Using Barrier and Penalty Function Methods
Get PDFIn order to solve the primal linear programming problems (and its
dual) some methods have been used such as simplex method,
geometric approach and interior points methods. None of these
methods used Lagrangian function as a tool to solve the problem.
This raises a question why are we not using this to solve the linear
programming problems. Thus, in this research we study and
analyze how the behavior and performance of barrier functions and
penalty functions methods for solving the linear programming
problems. All of these functions are in Lagrangian form.
With logarithmic barrier function methods we introduce three
types of function; that is, primal logarithmic, dual logarithmic and primal-dual logarithmic functions. There are two mam results
obtained from the logarithmic function method. First, we prove
that for every value of the barrier parameter, the logarithmic
barrier function for the problem has a unique minimizer; and then
if the sequence of the values of barrier parameters tends to zero,
then the sequence of the minimizers converges to a minimizer of
the problem. From these properties, we construct an algorithm for
solving the problem using the logarithmic barrier function
methods. Second, we give the equivalences between the interior
points set, the primal logarithmic barrier function, the dual
logarithmic barrier function, the primal-dual logarithmic barrier
function and the system of linear equations associated with these
functions
A Mathematical Model of Integrated Production-Inventory-Distribution System for Billet Steel Manufacturing
No full textOptimizing Decision-Making for Placement and Quantity of Tower Cranes in High-Rise Building Projects
No full textThe optimal placement and selection of tower cranes are critical in high-rise construction projects due to their significant impact on operational efficiency, costs, and safety. Misplacement or an inadequate number of cranes can lead to extended project duration, higher expenses and increased safety risks. This study investigates the factors influencing optimal tower crane placement, evaluates existing methodologies, and introduces a simulation-based approach for enhanced decision-making. Using a case study method, data were collected through site observations, interviews with project managers, and computer simulations. Findings reveal that simulation tools can optimize crane productivity, minimize operational costs, and enhance workplace safety. Integrating advanced technologies such as Building Information Modeling (BIM) further supports accurate placement and operational efficiency. These results underline the importance of leveraging technology to address challenges in high-rise construction management. The study concludes with insights on the generalizability of findings and recommendations for future research, emphasizing real-time monitoring integration
Selection of the best public fuel filling stations with analytical hierarchy process in Tangerang Regency
No full textEnergy is one of the main factors in supporting mobility in activities. Gas Stations (SPBU) are one way that people can get energy. In its operations, gas stations must be able to provide the best service to consumers so that maintaining consumer loyalty. This study aims to be able to choose the best Gas Stations (SPBU) with Analytical Hierarchy Process (AHP) method. The criteria used are based on previous research and based on the results of expert analysis so that the selected criteria are used as a model in decision making, namely management, sales, services, facilities and variations of fuel products. For alternatives to be evaluated are 5 gas stations located in the Legok area, Tangerang, Banten. Based on the calculation of the pairwise criterion comparison matrix in the AHP method, eigenvalues are obtained to perform consistency tests. after processing and analysis, it is known that the highest criterion is service and the lowest is sales. And alternative calculation results obtained that the gas station 5 is the best alternative chosen
Pelatihan Minimasi Waste dengan Lean Manufacturing pada PT. Ganding Toolsindo
Get PDFPT. Ganding Toolsindo selalu berusaha meningkatkan hasil produksinya untuk memenuhi kepuasan dan kepercayaan para pelanggan, akan tetapi pelanggan sering mengeluhkan bahwa perusahaan tidak dapat memenuhi permintaan produk yang dipesannya, hal ini dikarenakan kendala yang dialami oleh perusahaan. Berdasarkan penelitian pendahuluan yang dilakukan dengan melakukan pengamatan secara langsung di lantai produksi PT. Ganding Toolsindo didapati bahwa tidak tercapainya rata – rata target produksi/hari dikarenakan adanya aktivitas yang tidak bernilai tambah atau waste. Berdasarkan pengamatan tersebut, diperlukan suatu pendekatan yang dapat meminimasi waste yang terjadi di lantai proses produksi. Salah satu pendekatan untuk meminimasi waste tersebut adalah Lean Manufacturing, pendekatan ini berfokus untuk mengeliminasi pemborosan (waste) pada proses produksi. Pemborosan didefinisikan sebagai segala sesuatu yang tidak menambah nilai pada produk. Tujuan utama dari Lean Manufacturing yakni untuk menghasilkan produk berkualitas tinggi dengan biaya serendah mungkin dalam waktu singkat dengan mengeliminasi pemborosan yang ada pada proses produksi. Salah satu tools Lean Manufacturing yang digunakan pada penelitian ini adalah Value stream Mapping dimana tools tersebut membantu untuk memetakan kondisi aliran proses untuk mengetahui letak dan jenis waste yang terjadi pada aktivitas produksi
Analysis of Mark UP value decisions with a bidding strategy model to win projects in government auctions
Get PDFThe purpose of this study is to create a bidding strategy to determine the optimum markup value and maximum expected profit to win a project auction. From the data selection results, 24 project tenders and 12 large qualification companies participated in the tender on the LPSE page of the Ministry of PUPR, which will be used as samples in this study. The bid strategy model used to calculate the optimum markup value and maximum expected profit are with 3 (three) bid strategy models, namely the Friedman Model, Gates Model and Ackoff & Sasieni Model, and to calculate the probability of winning using the statistical approach method of multi discrete distribution, normal multi-distribution and single normal distribution. From the results of testing models with optimal mark-ups for the 24 project tenders used in this study, the percentage for each bidding strategy model that has the potential to win the tender sequentially is the Friedman model by 80.56%, the Gates model by 61.11% and the Ackoff &; Sasieni model by 43.06%. So, it can be concluded that the Friedman model provides a fairly high chance of winning tenders in government projects within the Ministry of PUPR
