scholarly journals The Synergy between Aquaculture and Hydroponics Technologies: The Case of Lettuce and Tilapia

2018 ◽  
Vol 10 (10) ◽  
pp. 3479 ◽  
Author(s):  
Gal Hochman ◽  
Eithan Hochman ◽  
Nadav Naveh ◽  
David Zilberman

This study investigates the economic and environmental value of the use of technologies that convert pollution and waste in one production process to an input in another production process. The study focuses on an aquaponics case study to show that the negative externalities borne from intensive fish farming can be internalized without regulatory intervention through a combination of fish farming and hydroponics. The introduction of aquaponics diversified the farmers’ sources of income, yielded savings in the cost of water purification and the cost of fertilizer for the plants’ growth, and resulted in more fish and plant output compared to the unregulated scenario. While deriving these results, we also derive a separation rule for managing live aquatic inventory, which separates expenses (which are affected by the biology of fish) and income.

1970 ◽  
Vol 2 (02) ◽  
pp. 41-48
Author(s):  
Wardi Saleh

The purpose of this research were to : (1) To know the cost and income of processing mengkudu become morinda juice in Regency OKU East, (2) To know value added of processing mengkudu become sari morinda in Regency OKU East, (3) To know feasibility of processing Mengkudu become morinda juice in Kabpaten OKU East. This research was conducted in Srikaton Village, Buay Madang Timur District, East OKU Regency. This research was conducted in April - May 2015 with the method of case study conducted directly to one farmer who do the making of noni juice in Srikaton Village. This study found that the cost of processing production to morindan mengkuduku morindan in Srikaton Village Buay Madang District East OKU Regency is Rp 351.500 / production process. While the income of Rp 898,500 / production process, the amount of added value obtained from the production value minus the cost between Rp 991.500 / production process and processing mengkudu become morinda juice deserve to be developed dengang NPV criteria present value of home industry juice morinda at an interest rate of 18% Rp 4.715.86 at the highest interest rate ie 36% of Rp -260.924maka value of NPV> 0 feasible business to dilanjutka. The value of Net B / C at the value of NPV that has been discount factor on the home industry business extract of morinda obtained at 1.30 and IRR of 35%.


Redes ◽  
2016 ◽  
Vol 22 (1) ◽  
pp. 528
Author(s):  
Renato Alves Oliveira ◽  
Jeronimo Alves Santos ◽  
Silvio Boroviecz

Resumo Este artigo teve como objetivo descrever os custos de produção e o processo produtivo da sericicultura no Município de Cândido de Abreu-PR. Como método, utilizou-se a pesquisa de campo para obter informações sobre a produção de um sericicultor. Descreveu-se o sistema de custos e o processo produtivo, desde a formação do amoreiral até a entrega final dos casulos. Concluiu-se que a criação de bicho-da-seda pode ser uma fonte alternativa de renda e um sistema produtivo viável economicamente. Abstract The objective of this study to describe the costs of production and the production process in the sericulture in municipality of Cândido de Abreu. As a method used the field research for information on the production of a silk producer. The cost system was described and the production process, from the formation of mulberry to final delivery of cocoons. It was concluded that the creation of silkworm, can be an alternative source of income and a viable economically productive system.


2017 ◽  
Vol 1 (1) ◽  
pp. 83-103
Author(s):  
M Avifan Rusli

Abstrak. Analisis Penilaian Biaya Pengelolaan Limbah Produksi untuk Meningkatkan Laba Perusahaan. Penelitian ini bertujuan untuk mengetahui cara pengelolaan limbah hasil produksi dan pengaruh nilai pengelolaan limbah dalam meningkatkan laba pada perusahaan serta mengetahui pembebanan biaya pengelolaan limbah dan bentuk laporan biaya pengelolaan limbah. Penelitian ini menggunakan model studi kasus. Hasil penelitian menunjukkan bahwa hasil prosentase penilaian biaya, tahun 2013 memiliki kenaikan biaya sebesar 4,24% dibanding tahun 2012, sedangkan pada tahun 2014 kenaikan biaya sebesar 20,75%. Hasil penilaian kenaikan laba yang dipengaruhi oleh hasil penjualan kompos tahun 2012 adalah 1,402% dari laba, tahun 2013 adalah 2,92% dari laba, tahun 2014 adalah 3,44% dari laba. Jika pendapatan dari kompos digabungkan, maka prosentase kenaikan laba 3,57% dari Rp61.428.934.000,- menjadi Rp63.614.647.000,-. Berdasarkan kesimpulan diatas maka penulis menyarankan perlu adanya peninjauan kembali atas biaya yang dialokasikan untuk menekan pengeluaran dan memaksimalkan laba perusahaan. Limbah yang dihasilkan dari proses produksi  sebaiknya diolah sendiri. Kata kunci: Analisa Penilaian Biaya, Meningkatkan Laba, dan Nilai Realisasi Bersih. Abstract. Cost Assessment Analysis of Production Waste Management to Increase Profit. This study aims to determine how waste management results and influence the value of waste management in increasing profits in the company as well as knowing the cost of waste management and the form of waste management cost report. This study uses case study model. The results showed that the percentage of cost assessment, in 2013 has increased the cost of 4.24% compared to 2012, while in 2014 the cost increase of 20.75%. The result of the increase in profit is affected by the compost sales in 2012 is 1.402% of profit, 2013 is 2.92% of profit, 2014 is 3.44% of profit. If the income from the compost is combined, then the percentage increase of 3.57% profit from Rp61.428.934.000, - to Rp63.614.647.000, -. Based on the above conclusions the authors suggest the need for a review of the costs allocated to reduce expenditure and maximize corporate profits. Waste generated from the production process should be processed alone. Keyword: Cost Assessment Analysis, Increase Profit, and Net Realizable Value.


2019 ◽  
Vol 11 (21) ◽  
pp. 6161 ◽  
Author(s):  
Gurupada Maity ◽  
Sankar Roy ◽  
Jose Verdegay

Sustainable development is treated as the achievement of continued economic development without detriment to environmental and natural resources. Now-a-days, in a competitive market scenario, most of us are willing to pay less and to gain more in quickly without considering negative externalities for the environment and quality of life for future generations. Recalling this fact, this paper explores the study of time variant multi-objective transportation problem (MOTP) with consideration of minimizing pollution. Time of transportation is of utmost importance in reality; based on this consideration, we formulate a MOTP, where we optimize transportation time as well as the cost function. The parameters of MOTP are interval-valued, so this form of MOTP is termed as a multi-objective interval transportation problem (MOITP). A procedure is taken into consideration for converting MOITP into deterministic form and then for solving it. Goal programming is applied to solve the converted transportation problem. A case study is conducted to justify the methodology by utilizing the environmental impact. At last, conclusions and future research directions are included regarding our study.


2018 ◽  
Vol 4 (2) ◽  
pp. 43-55
Author(s):  
Ika Yulianti ◽  
Endah Masrunik ◽  
Anam Miftakhul Huda ◽  
Diana Elvianita

This study aims to find a comparison of the calculation of the cost of goods manufactured in the CV. Mitra Setia Blitar uses the company's method and uses the Job Order Costing (JOC) method. The method used in this study is quantitative. The types of data used are quantitative and qualitative. Quantitative data is in the form of map production cost data while qualitative data is in the form of information about map production process. The result of calculating the cost of production of the map between the two methods results in a difference of Rp. 306. Calculation using the company method is more expensive than using the Job Order Costing method. Calculation of cost of goods manufactured using the company method is Rp. 2,205,000, - or Rp. 2,205, - each unit. While using the Job Order Costing (JOC) method is Rp. 1,899,000, - or Rp 1,899, - each unit. So that the right method used in calculating the cost of production is the Job Order Costing (JOC) method


2020 ◽  
Vol 4 (02) ◽  
pp. 34-45
Author(s):  
Naufal Dzikri Afifi ◽  
Ika Arum Puspita ◽  
Mohammad Deni Akbar

Shift to The Front II Komplek Sukamukti Banjaran Project is one of the projects implemented by one of the companies engaged in telecommunications. In its implementation, each project including Shift to The Front II Komplek Sukamukti Banjaran has a time limit specified in the contract. Project scheduling is an important role in predicting both the cost and time in a project. Every project should be able to complete the project before or just in the time specified in the contract. Delay in a project can be anticipated by accelerating the duration of completion by using the crashing method with the application of linear programming. Linear programming will help iteration in the calculation of crashing because if linear programming not used, iteration will be repeated. The objective function in this scheduling is to minimize the cost. This study aims to find a trade-off between the costs and the minimum time expected to complete this project. The acceleration of the duration of this study was carried out using the addition of 4 hours of overtime work, 3 hours of overtime work, 2 hours of overtime work, and 1 hour of overtime work. The normal time for this project is 35 days with a service fee of Rp. 52,335,690. From the results of the crashing analysis, the alternative chosen is to add 1 hour of overtime to 34 days with a total service cost of Rp. 52,375,492. This acceleration will affect the entire project because there are 33 different locations worked on Shift to The Front II and if all these locations can be accelerated then the duration of completion of the entire project will be effective


2016 ◽  
Vol 10 (2) ◽  
pp. 162-171
Author(s):  
Hafid Hafid ◽  
Tatang Sutisna

The design and manufacturing of the rotary table with the specification Ø 170 mm (6 inches) for CNC machine 4 axis has been done. The objective of manufacturing a rotary table is to increase the efficiency of CNC machine Hardford 4 axis to be above 80% in line machining center CV. IM’s workshop. The engineering methods was taken, consist of: working preparation, manufacturing of working drawing, engineering process, the manufacturing and testing. The prototype has been tested and operated, the resulting of increasing productivity of which were as follows: the process of assembling was increased to be 3 time ( before 1 time) and processing time for a specific case reduced from 5 hours to 3 hours, number of operators for the case of assembling the rotary reduced to 1 person (before 4 persons), safety and security become to be better. The results show increased efficiency of CNC machine Hardford, from under 50% to be above 80%. Based on the economical analysis obtained by the cost of good sold (C.G.S) of the rotary table is IDR 34.060.000. The results presented in this paper is expected to be case study for developing a business of the metal and engineering SMEs domestic to the effort of improving efficiency, quality, productivity and competitiveness in global market.ABSTRAKPerancangan dan pembuatan alat bantu meja putar (rotary table) dengan spesifikasi teknis Ø 170 mm (6 inci) untuk mesin CNC 4 axis telah dilakukan. Tujuan pembuatan rotary table adalah untuk meningkatkan efisiensi mesin CNC Hardford 4 axis di atas 80% pada line machining center Bengkel CV. IM. Metode rancang bangun yang dilakukan, meliputi: persiapan kerja, pembuatan gambar kerja, proses engineering, pembuatan dan uji coba. Prototip tersebut telah diuji coba dan dioperasikan dengan hasil peningkatan produktivitas sebagai berikut: proses pengerjaan bongkar pasang meningkat menjadi 3 kali (sebelumnya 1 kali) dan waktu pengerjaan untuk kasus tertentu berkurang dari 5 jam menjadi 3 jam, jumlah operator untuk kasus bongkar pasang rotary berkurang menjadi 1 orang (sebelumnya 4 orang), keselamatan kerja dan keamanan menjadi lebih baik. Hasil peningkatan berupa efisiensi mesin CNC Hardford 4 axis dari sebelumnya di bawah 50% menjadi di atas 80%. Berdasarkan hasil perhitungan analisis ekonomi diperoleh harga pokok produksi (HPP) alat bantu meja putar adalah sebesar Rp. 34.060.000. Bahasan ini diharapkan menjadi contoh kasus bagi pengembangan usaha IKM logam dan mesin dalam negeri untuk meningkatkan efisiensi, mutu, produktivitas dan keunggulan daya saing di pasar global.Kata kunci: alat bantu meja putar, mesin CNC, harga pokok produksi


Author(s):  
Michael Woo ◽  
Marcos Campos ◽  
Luigi Aranda

Abstract A component failure has the potential to significantly impact the cost, manufacturing schedule, and/or the perceived reliability of a system, especially if the root cause of the failure is not known. A failure analysis is often key to mitigating the effects of a componentlevel failure to a customer or a system; minimizing schedule slips, minimizing related accrued costs to the customer, and allowing for the completion of the system with confidence that the reliability of the product had not been compromised. This case study will show how a detailed and systemic failure analysis was able to determine the exact cause of failure of a multiplexer in a high-reliability system, which allowed the manufacturer to confidently proceed with production knowing that the failure was not a systemic issue, but rather that it was a random “one time” event.


Author(s):  
Ekaterina Grinberg

In two parts of the article, more than 70 errors and violations of the Biotechnics of artificial breeding of Pacific salmon in salmon hatcheries are collected and summarized, which lead to an immediate or delayed deterioration of the quality of reared fry and a decrease in their survival rate. Deviations from the biological basis of fish farming are shown and possible consequences of such errors or violations are predicted. In the first part of the article (#7,2020) there were General errors (throughout the entire fish-breeding process), as well as violations of Biotechnics during the work with producers, collecting eggs and preparing them for incubation, in the second part-violations of Biotechnics during the incubation of eggs, holding pre-larvae, rearing and release of young. Their correction, prevention or minimization of consequences will significantly improve the quality of sexual products and offspring from producers, increase the linear and weight gain of juveniles during rearing, improve the coefficient of feed payment, reduce the time of rearing, improve the epizootic situation by developing immunity in fry and mobilizing other protective reactions of their body, significantly reduce waste at all stages of the production process, increasing survival by 10–15%. In conclusion, it is noted that the first and most important condition for an efficient salmon hatchery is the creation of optimal environmental conditions at each stage of the production process. The second condition is strict compliance with the Biotechnics of artificial salmon breeding and the complex of veterinary and sanitary, fish-breeding and meliorative and therapeutic and preventive measures. The third is the availability of competent specialists who regularly improve their skills in accredited Universities to implement, control and manage the first two conditions.


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