scholarly journals OPTIMIZATION OF THE USE OF THE PRODUCTION CAPACITY OF A SHIPYARD

Author(s):  
Olga Girina ◽  
◽  
Svetlana Zhigalovskaya ◽  

The article discusses the issues of determining the production capacity of a shipyard and modeling the production process of ship repair using a systematic approach. The production capacity of the plant is understood as the maximum possible annual output in terms of the indicators and nomenclature established for the shipyard, with the full use of equipment and areas.The maximum volume of production is achieved when the structure of products is fully consistent with the structure of production resources and the structure of production assets. Improvement of management at the ship repair enterprise can be carried out in directions, including by creation of the model of production based on allocation of its most essential characteristics, used of mathematical methods of optimization. A static model is proposed to optimize the use of the shipyard production capacity, whenperforming scheduled preventive maintenance of shipping company ships in market conditions and a dynamic model of the annual plan in order to maximize the shipyard load and uniform use of its production capacity. In the performed calculations of the test case on the basis of the static model, four optimal plans with different optimization conditions were obtained: a plan for using the production capacity of theshipyard with the given initial data; plan with maximum production capacity with full use of shipyard resources; a plan for changing the solvency of the shipping company; plan for changing the terms and standards of ship repair. In all plans, the volume of repairs and the availability of resources limiting the production process are analyzed.Based on the proposed models, the following groups of factors on which the use of the production capacity of the shipyard depends have been identified:1) technical and operational parameters of shipyard units;2) demand for shipyard services in the form of volumes of planned work by type of production activity;3) standards for the use of shipyard capacities;4) the solvency of customers;5) the way of organizing the production process.The method of organizing ship repair is understood as fixing of certain resources of the shipyard units for the fulfillment of planned or additional customer orders. All factors of the first four groups affect the volume of ship repair and other indicators of the production program in termsthe actual or optimal way of organizing production.Key words: shipyard, production capacity, economic and mathematical models, analysis, grouping of factors

ICCD ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 623-626
Author(s):  
Diny Agustini Sandrasari

Women’s participation to improve the family economic is through an entrepreneurship. One of the business have done by women’s in Cipayung area is to make a banana chips. Banana chips that they have produced have a savory and crispy taste but it has no longer. However, even though the business has been operating more than 5 years, that business not expanded. That is caused by low technology that they are used such as the slicing process, they still do this process manually so that it has unequal thickness, they used plastic to packaging the product with a simple seal so easy to broken and can make the product will be rancid quickly. The method used in this community development activity is participation of women’s community who have banana chips business in Cipayung sub-district, East Jakarta. This activity begins with a discussion with the community to identifying the problems, determine priority issues that must be endured resolved. The results of discussion is they agreed the main problem about the business is slicing process and packaging. To complete this problem which is an obstacle about the slicing process, it must be made with banana slicer machine, while for the packaging problem, improved packaging and labeling system must be done which aims to increase the production process of banana chips. The results showed that the introducing of technology will increased the production capacity and income of the community by 40%.


Author(s):  
Elisabeth Maschke-Dutz

In this chapter basic mathematical methods for the deterministic kinetic modeling of biochemical systems are described. Mathematical analysis methods, the respective algorithms, and appropriate tools and resources, as well as established standards for data exchange, model representations and definitions are presented. The methods comprise time-course simulations, steady state search, parameter scanning, and metabolic control analysis among others. An application is demonstrated using a test case model that describes parts of the extrinsic apoptosis pathway and a small example network demonstrates an implementation of metabolic control analysis.


2013 ◽  
Vol 850-851 ◽  
pp. 1008-1011
Author(s):  
Jian Feng Liu

Sequencing of hybrid assembly production directly affects the balancecontinuity and punctuality of production process. First, the mathematical models with MILP of hybrid assembly production are established, and then the sets of sequencing scheme of minimum makespan which meet customers demands are obtained. Furthermore workshop simulation models with Flexsim software are established. In this paper, the painting hybrid assembly production line of some automobile engine manufacturing plant was employed to analyze the sequencing as an example, and the obtained painting production line sequencing scheme is consistent with the actual production of enterprises and it improves production capacity.


DEDIKASI ◽  
2019 ◽  
Vol 21 (1) ◽  
Author(s):  
I Gede Nyoman Suta Waisnawa ◽  
I Made Sudana ◽  
Ida Bagus Swaputra

The results of the implementation of ergonomics in deco and shop camps were specifically focused onimproving work facilities, workplaces, layouts, work procedures, and work environment, increasing workers'comfort in conducting production activities, and utilizing space so that the production process becomes safe andflexible. Outputs that have been achieved included (1) workstations arranged in an efficient material flow layoutsupported by adequate work tools so it can optimize the achievement of production targets, (2) improvement of theprocess and procedures for completing work, (3) improvement and savings in the use of materials, machinery/tools,and humans, (4) utilization of humans’ efforts, (5) improving workspace arrangements that can provide acomfortable and safe working environment. The implementation of participatory ergonomics production capacitycan reach 456 pieces/year and shop production as many as 24 pieces/year, for example; tiger, bear, eagle, cow headetc. After the ergonomic intervention, the production capacity increased to 52 pieces/year. The impact of thisprogram was an increase in production capacity of Ari deco craftsmen (67.5%) and Kubu shop craftsmen (46.15%),while business partners' turnover was around 69.9%.


Dharma LPPM ◽  
2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Eny Endah Pujiastuti ◽  
Humam Santosa Utomo ◽  
Suratna Suratna

The community service program is carried out at one of the SMEs in Wonosobo, Central Java, which produces and markets processed carica food products. The problems faced by SMEs are problems in the aspects of marketing, financial management and production. The purpose of community service is to improve the ability of SMEs to market products, manage company finances, increase the efficiency of the production process, and increase production capacity. The approach used in this community service is training and business assistance. The results felt by SMEs are the wider marketing of carica processed food products, structuring the company's financial system, efficiency in the production process, and increased production capacity.


2018 ◽  
Vol 6 (2) ◽  
pp. 102-108
Author(s):  
Gen Gen Gendalasari ◽  
Triandi Triandi

The contribution of the micro, small and medium enterprises sector to gross domestic product increased from 57.84 percent to 60.34 percent in the last five years. Uptake of labor in this sector also increased, from 96.99 percent to 97.22 percent in the same period. (http://www.kemenperin.go.id, 2018), Problems with MSMEs vary, especially for shoe MSMEs. The purpose of this study, 1) What is the performance of MSME shoes in Bogor; 2) What is the model of coaching that can be developed for MSME actors The results of the study show that 1) based on evaluation it is known that the attributes of the production process, production equipment, production control, buildings and facilities, markets, quality standardization, business management, capital, and promotion require improvement. Difficulties in terms of capital make the company still survive with conventional and manual technology, so that production capacity is also relatively limited. In addition, the company's bookkeeping system is still directly controlled by the owner of the company. 2) Shoe MSMEs need guidance in terms of production processes and production facilities. As well as assistance in terms of developing market share both domestically and abroad and developing promotions so that products are more widely known


2012 ◽  
Vol 13 (2) ◽  
pp. 167
Author(s):  
SLAMET BUDIARTO ◽  
SUPARNO . ◽  
INDUNG SUDARSO

SLAMET BUDIARTO, SUPARNO, DAN INDUNG SUDARSOJurusan Teknik Industri, Fakultas Teknologi Industri, ITS Kampus Keputih, Sukolilo, Surabaya 60111Laman: [email protected] prioritas upgrading pertama dilakukan dengan membuat model aktivitas dengan IDEF0 (IntegratedDefinition Language 0) sampai aktivitas terkecil. Verifikasi dilakukan dengan petugas lapangan, sedangkan validasidilakukan dengan software IDEF37. Dengan menganggap bahwa model aktivitas tersebut merupakan sebuah peta aktivitas,maka langkah selanjutnya dilakukan pembobotan tingkat kepentingan aktivitas yang ada. Setelah indikator kinerja tiapaktivitas tersebut ditentukan, maka analisa selanjutnya dilakukan melalui perangkingan dan pendefinisian aktivitas kritisuntuk menentukan ICOM’s yang akan di-upgrade. Dari data dan pengolahan yang dilakukan, terdapat 627 ICOM’s yangdianalisa atas dasar indikator kinerjanya pada output tertentu. Selain itu, terdapat 15 tahap yang direkomendasikan untukperbaikan kinerjanya, dengan asumsi dalam satu tahap terdiri 30 ICOM’s yang diperbaiki kinerjanya dalam enam bulan.Prioritas upgrading ICOM’s dimulai dari upgrading spesifikasi teknik, SDM, dan fasilitas, pada aktivitas merencanakanprogram produksi. Namun, secara umum aktivitas merencanakan program produksi dan aktivitas merencanakan materialserta kapasitas yang diinginkan merupakan aktivitas yang ICOM-nya paling sering mengalami upgrading tahap I. Secaraberkelanjutan peningkatan kinerja dapat dilakukan dengan mengacu pada prioritas upgrading tahap II, III dan seterusnya.Evaluasi upgrading perlu dilakukan setelah implementasi upgrading tahap 3. Hal tersebut berguna untuk memutuskanapakah perlu melakukan upgrading tahap IV atau melakukan analisis prioritas kembali.Kata kunci: Upgrading, IDEF0, ICOM, Sistim Manufaktur, BerkelanjutanABSTRACTThe analysis is done by upgrading the priority, first create a model of activity with IDEF0 (Integrated DefinitionLanguage 0) To The Smallest activity. Verification is done by field officers, while the validation is done by software IDEF37.With regard that the activities that the model is a map of the activity. Then the next step don is weighting the importanceof existing activities. Once the performance indicators of each activity is determined, then the analysis is then performedthrough the sorting and defining the activity of ICOM’s critical to determine which will be upgraded. Of data and processingis done, there are 627 ICOM’s are analyzed on the basis of performance indicators on a specific output. And consists of 15stages are recommended for improved performance, assuming a single phase which comprises 30 ICOM’s performance willbe improved within six months. The priority of upgrading is begined to upgrade technical specifications, human resources,and facilities at the activities planned production program. However, in general the activity plan programs and activitiesplanned production capacity and desired material is the activity that most often experience upgrading in the first stage.Continuous performance improvement can be made with reference to the upgrading priority of phase II, III and so on.Evaluation upgrading needs to be done after the implementation of upgrading stage 3. It is useful to decide whether to dothe upgrading stage IV or re-analyze priority.Key word: Upgrading, IDEF0, ICOM, Manufacturing Systems, Sustainable


2020 ◽  
Vol 15 (3) ◽  
pp. 155
Author(s):  
Ari Satmoko ◽  
Hyundianto Arif Gunawan ◽  
Bonang Sigit Trenggono ◽  
NFN Mujiono

<p>Iradiator gamma, yang diberi nama iriradiator Merah Putih, telah selesai dibangun dan diisi dengan sumber Cobalt-60 dengan kapasitas sekitar 300 kCi. Dirancang untuk multiguna, iriadiator ini harus dapat menyediakan berbagai dosis serap dari rendah hingga tinggi. Sistem kontrol mengijinkan 4 opsi kombinasi rak-rak sumber dengan opsi aktivitas terkceil adalah 41,2 kCi. Di dalam bungker, produk akan menjalani mekanisme laluan iradiasi dengan tujuan agar mendapatkan dosis serap iradiasi yang beragam. Bungker menyediakan 72 posisi iradiasi. Di setiap posisi iradiasi, gerakan produk dapat dihentikan untuk jeda waktu tertentu menyesuaikan dosis serap iradiasi yang diinginkan. Waktu minimum bagi produk menyelesaikan menkanisme laluan iradiasi adalah 78,5 menit. Pengujian dosis dosimetri menunjukkan bahwa laju dosis serap opsi pengoperasiaan aktivitas sumber terkecil adalah 0,22 kGy per jam. Rasio Dmaks/Dmin bergantung pada densitas produk. Untuk densitas 0,2, 0,4, dan 0,6 g/cm3, rasio keseragaman dosis masing-masing adalah 1,54, 1,65, dan 1,71. Kombinasi karakterisasi mekanik dan dosimetri mengantarkan pada dosis serap minimum yang mungkin diperoleh sebesar 0,29 kGy. Dengan batasan minimum ini, segala tujuan iradiasi yang membutuhkan lebih besar dari dosis tersebut sangat dimungkinkan menggunakan iradiator Merah Putih seperti untuk karantina buah segar, pengawetan biji-biji serelia, buah-buahan kering, dan lain-lain. Permasalahan kapasitas produk juga menjadi bahan pertimbangan. Kapasitas produksi iradiasi bergantung berbagai parameter seperti dosis serap iradiasi yang diinginkan dan densitas produk, serta parameter operasional lainnya. Jika dibutuhkan dosis serap iradiasi Gy dan densitas produk 0,4 gr/cm3, maka kapasitas produksinya adalah 3,17 ton/jam atau 76 ton/hari. Kapasitas dapat berubah bila parameter iradiator juga berubah.</p><p> </p><p><strong>Characterisation and Potential use of Irradiator Red and White for Handling Food Product Agricultural.</strong></p><p>A gamma irrdiator called Irradiator Merah Putih, has been contructed and loaded with Cobalt-60 sources having a total activity of about 300 kCi. Designed for multipurposes, the irriditor should be able to provide low-to-high absorbed doses. The control system allows 4 options for combination of source racks with the smallest activity option is 41.2 kCi. Inside the irridiator bunker, the product to be irradiated will undergo an irridiation source pass mechanism in order to obetain uniform irradition absorbed dose. The bunker provides as many as 72 irradiation positions. At its position, the product maybe stopped for certain period of delight adjusting the desired irradition dose. The minimum time for the product to complete the source pass mechanism is 78.5 minutes. The dosimetry test showed that the absorbed dose rate for the smallest source activy operation was 0.22 kGy/hr. The Dmax/Dmin ratio depend on the product densitiy. For densities 0.2, 0.4, and 0.6 g/cm3, the dose uniformity ratios were respectively 1.54, 1.65, and 1.71. The combination of both mechanical and dosimetry characterization leads to a minimum absorbed dose of 0.29 kGy. With this minimum restriction, any irradiation objective requiring greater than that dose is posible using the irradiator Merah Putih such as for fresh fruit, quarantine, presservation of ceral grains, dried fruits,and others. The irradiator’s throughput is also considered. The irradiation capasity depends on various parameters such as the desired irradiation absorbed dose and the density of thr product as well as other operational paramters. If a 400 Gy of irradiation of absorbed dose is required for a product with the density of 0.4 g/cm3, its production capacity is about 3.17 ton/h or 76 ton/day. The capasity may change when irradiator operational parameters are also change.</p>


2021 ◽  
Vol 2021 (4) ◽  
pp. 4913-4917
Author(s):  
JAROSLAVA KADAROVA ◽  
◽  
JAROSLAVA JANEKOVA ◽  
DANIELA ONOFREJOVA ◽  
◽  
...  

Investments in tangible fixed assets significantly affect the future production capacity of the company, they are a stimulator of the company's development. At the same time, they are associated with a degree of uncertainty that needs to be taken into account when making investment decisions. The article presents an approach to optimizing inhomogeneous production in order to maximize the economic efficiency of a particular business investment. The economic efficiency of the investment is assessed comprehensively in terms of profitability, liquidity and risk. The risk is addressed through Monte Carlo simulation and the production program is optimized using OptQuest. The result is a production program that maximizes the return on the assessed corporate investment.


2021 ◽  
Vol 258 ◽  
pp. 09053
Author(s):  
Ivan Abramov ◽  
Anastasia Martyanova

To assess the production capacity of a construction and installation organization, the actual volume of work performed for a certain period and planned indicators for the use of certain resources are used. Since the state of production facilities depends not only on the production program, but also on the current state of labor resources, the actual task is to choose the most effective criteria for planning and evaluating the production capacity of a construction and installation organization. In formulating the criteria, the author was guided by the theory, allowing to establish the relationship between the production capacity of building-assembling organizations and production program and capabilities assessment and planning of production capacity for the coefficients of their extensive and intensive use. The study made it possible to form a system of indicators for planning and evaluating the production capacity of a construction and installation organization. The purpose of forming a system of indicators for planning and evaluating production capacities is to take into account in the calculations not only the actual and planned volumes of construction and installation works, but also indicators that reflect the current state of labor resources. The study revealed that through the formation of a system of evaluation indicators, taking into account the impact on production capacity of quantitative and qualitative factors expressed in the structure of labor resources, their qualifications on the one hand, as well as the rhythm and load of the construction and installation organization on the other hand.


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