scholarly journals A Workforce and Truck Allocation Model in a Solid Waste Management System: A Case from Nigeria

2021 ◽  
pp. 60-78
Author(s):  
Desmond E. Ighravwe ◽  
Sunday A. Oke

The management of waste with the limited workforce and trucks is a complicated problem. Currently, there is insufficient evidence in literature on how this process could be optimised. In this article, two new models on genetic algorithm and differential evolution were developed to jointly optimise the cost and human reliability of a municipal solid waste (MSW). It optimised this system’s benefit-cost and established the relationship between a MSW’s workforce and truck allocation. Although prior research has revealed relationships among cost, workforce strength, and truck allocation activities, however, the nature of this relationship and the unique attribute of workers’ reliability to influence the total operating cost and the benefit-cost ratio have not been thoroughly understood. A case study of a MSW agency in Nigeria was used to demonstrate the applicability of the proposed model. The results obtained showed preference to the differential evolution algorithm’s results. This article contributes to MSW in the following ways: it presents a model to assign reliability to workforce in a MSW system based on evolutionary algorithms performance, and it optimises a MSW system’s total operating cost and the benefit-cost ratio concurrently.

2016 ◽  
Vol 131 (4) ◽  
pp. 1795-1848 ◽  
Author(s):  
Patrick Kline ◽  
Christopher R. Walters

Abstract We use data from the Head Start Impact Study (HSIS) to evaluate the cost-effectiveness of Head Start, the largest early childhood education program in the United States. Head Start draws roughly a third of its participants from competing preschool programs, many of which receive public funds. We show that accounting for the fiscal impacts of such program substitution pushes estimates of Head Start’s benefit-cost ratio well above one under a wide range of assumptions on the structure of the market for preschool services and the dollar value of test score gains. To parse the program’s test score impacts relative to home care and competing preschools, we selection-correct test scores in each care environment using excluded interactions between experimental assignments and household characteristics. We find that Head Start generates larger test score gains for children who would not otherwise attend preschool and for children who are less likely to participate in the program.


Agrikultura ◽  
2018 ◽  
Vol 29 (3) ◽  
pp. 144
Author(s):  
Wahyu K Sugandi ◽  
Asep Yusuf

ABSTRACTEconomic analysis reel type cutting machine for elephant grassThe need grass for fodder in the region Lembang has been increasing, but it does not followed byits quality. Therefore, cutting machine which is able to cut the fodder no more than 5 cm size is needed. The Laboratory of Agricultural Machinery and Machinery Department of Agricultural Engineering and Biosystem FTIP Unpad had been developed an elephant grass enchant machine inaccordance with the requirements of making the silage, but no economic feasibility analysis has been done for the machine. Therefore it was necessary to study the economic feasibility analysis of elephant grass cutting machine. The method used in this study was the economic analysis methodwhich includes the cost of production and the breakeven point, and business feasibility including net present value (NPV), benefit cost ratio analysis (BCR), internal rate of return (IRR) and payback period analysis (PBP). The results showed that the cost of production of elephant grass enemies was Rp 2,178 / kg with production breakeven 18.769 kg, BC ratio of 1.15, NPV1 of Rp 70,770, - NPV2 of Rp 61.333, - IRR of 27% and payback period during 2 months. So it can be concluded that the use of elephant-type elephant chopper machine was feasible to use.Keywords: Elephant grass, economic analysis, cutting machineABSTRAKKebutuhan rumput gajah untuk pakan ternak (silase) di daerah Lembang terus meningkat. Syarat pembuatan silase tersebut bahwa panjang potongan rumput gajah sebaiknya < 5 cm. Untuk itudiperlukan sebuah mesin pencacah rumput gajah sesuai syarat pembuatan silase. LaboratoriumAlat dan Mesin Pertanian Departemen Teknik Pertanian dan Biosistem FTIP Unpad telah mengembangkan sebuah mesin pencacah rumput gajah sesuai syarat pembuatan silase tersebut, tetapi belum dilakukan analisis kelayakan ekonomi untuk mesin tersebut. Oleh karena itdiperlukan suatu penelitian berkenaan dengan analisis kelayakan ekonomi mesin pencacah rumput gajah. Metode yang digunakan pada penelitian ini adalah metode analisis ekonomi yang meliputi biaya pokok produksi dan titik impas, serta kelayakan usaha yang meliputi net present value(NPV), benefit cost ratio analysis (BCR), internal rate of return (IRR) dan payback period analysis(PBP). Hasil penelitian menunjukkan bahwa biaya pokok produksi mesin pencacah rumput gajah adalah Rp 2.178/kg dengan titik impas produksi 18.769 kg, BC rasio sebesar 1,15, NPV1 sebesar Rp 70.770,- NPV2 = Rp 61.333,- IRR sebesar 27% dan payback period selama 2 bulan. Maka dapat disimpulkan bahwa pengunaan mesin pencacah rumput gajah tipe reel layak digunakan. Kata Kunci : Rumput Gajah, Analisis Ekonomi, Mesin Pencacah


Author(s):  
A. F. Aderounmu ◽  
I. O. Oyewo ◽  
O. O. Oke

This paper reports findings from a study carried out to investigate the profitability of snail marketing in Ibadan North East Local Government area of Oyo State. Structured questionnaires and interview schedules were designed to obtain information on socio-economic characteristics, operational capital and source, years of experience in the business and constraints to snail marketing. Seventy snail marketers, randomly selected from three major markets which are Oje, Agodi gate and Agugu market;. The data collected were analyzed using frequency table, percentage, gross margin, Benefit/ Cost ratio and Marketing Efficiency analyses. Majority (94.3%) of the respondents were female while 5.7% were male. 31.5% were between the ages of 51-60years with mean age of 54.9 years. It was also shown that 50% source their capital through personal savings between N11,000-N20,000 and 47.1% with 5-9years experience. The cost and return analysis revealed that total revenue was N1, 457,700.00k and total cost was N1, 285,320.00k while gross margin    was N172, 380.00k and benefit- cost ratio was 1.13 which implies that for every N1.00 invested the marketer will make a return of N1.13k on every snail sold, Marketing efficiency was 88%. Major constraints to snail marketing in the study area were poor market patronage (87.1%) and seasonality (82.9%). Snail farming is advocated since it is a profitable agribusiness and can be achieved through cooperatives and micro credit facilities. Also, marketing of snail in the area    should be restructured and standardized to command frequent patronage and command higher price value.


Author(s):  
FADHILLAH KUSUMA RAHAYU ◽  
SYARIFAH AIDA

The purposes of this research were to determine the cost, revenue, and profit of fruit seedling marketing and the feasibility of marketing business of fruit seedling at the CV. Flora Chania in Palaran Subcity, Samarinda City. This research was conducted during 3 months from March to May 2019. The data were collected secondary data. The analysis included calculation of cost, revenue, profit, Net Present Value (NPV), Internal Rate of Return (IRR), Net Benefit Cost Ratio (Net B/C Ratio), dan payback period. The research results showed an average operational cost of IDR248,945,720.00 year-1 or IDR20,745,477.00 month-1, an average revenue of IDR349,900,000.00 year-1 or IDR29,083,333.00 month-1 and the average income of IDR100,818,566.00 year-1 or IDR8,326,547.00 month-1. This research found  the NPV value of IDR37,464,538.00 at a factor discount rate of 10%, IRR value of 4.6%, Net B/C Ratio value of 1.32, while the payback period of 1 year and 4 months. The results of this research  indicate that based on an assessment of technical aspect, management and legal aspects, market and marketing aspects, and financial aspect, the marketing of fruit seedling is feasible to be developed. 


Author(s):  
ERICK ABDUL MUTAKABBIR ◽  
NELLA NAOMI DUAKAJU

Ornamental plants are commonly planted by people as decoration. This study aimed to determine income and financial feasibility of ornamental plants business in Samarinda City. This study was done in three months since November 2017 until Januari 2018 in Samarinda City. The sampling method used purposive sampling method with the number of samples as many as 29 respondents.  The data were collected through interviews with respondents. The assesment of business feasibility  was done by using some investment criterias such as Net Present Value (NPV), Internal Rate of Return (IRR), dan Net Benefit Cost Ratio (Net B/C Ratio). The results of this study showed that ornamental plants business in Samarinda City owns the average of investment cost of IDR90,982,931.00 year-1, the average of operating cost of IDR37,307,586.00 year-1, the average of revenue of IDR118,506,206.00 year-1, and the average of income of IDR81,198,620.00 year-1. The assesment results of investment in ornamental plants business in Samarinda City are NPV of IDR75,074,609.00 at discount rate of factor of 12%, IRR of 65%, while Net B/C Ratio of 1,82. This is showed that ornamental plants business in Samarinda City is financially feasible to be done.


2019 ◽  
Vol 17 (1) ◽  
pp. 117-121
Author(s):  
Zannatul Ferdoushi ◽  
Zubaida Parveen Patwary ◽  
Yeasmin Ara ◽  
Masud Rana

The study was conducted to assess the cost and return from tilapia farming. Fifty homestead aquaculture ponds practicing monoculture and polyculture of tilapia (25 farmers from each category) were selected for this study. Data had been collected through face to face interview by using a structured questionnaire during April to September 2015 from the selected farmers of Dinajpur districts. The results from the survey revealed that both the tilapia monoculture and polyculture farming were profitable. However, the average total cost per hectare per production period was found higher (Tk. 332,712.08) in tilapia monoculture than tilapia culture with carps (Tk. 241,722.34). Moreover, the net margin was also found higher in tilapia monoculture with benefit cost ratio 1.51. Whereas, the benefit cost ratio in polyculture farming was 1.34. J. Bangladesh Agril. Univ. 17(1): 117–121, March 2019


2009 ◽  
Vol 10 ◽  
pp. 27-33 ◽  
Author(s):  
Raj Kumar Adhikari

During February-April 2008, a study was conducted to compare the yield and economics of organic and inorganic carrot production and its profit volume in Chitwan district of Nepal. Face to face interview method was used to collect the primary information from randomly selected organic and inorganic carrot producers. Among the cost components, per unit cost on female labor and organic fertilizer were found to be higher in organic production system where as higher per unit cost on seed, tillage operation and male labor were found in inorganic production system. Higher cost and higher revenue was found in inorganic production system but higher benefit cost ratio was found in organic production system. This revealed that adoption of organic carrot production system was economically profitable than inorganic production system.  Key words: Benefit cost ratio; Carrot; Cost; Gross margin; Organic agricultureThe Journal of Agriculture and Environment Vol:10, Jun.2009 Page: 27-33


Author(s):  
Tewoderos Meleaku ◽  
Desaly Gebre Tshadike ◽  
Goteom Zenbe

This study aimed to investigate the cost-benefit of sesame production per hectare under (farmers practice, partial package and full package) practice were farmers performed side by side in their plot. Benefit cost ratio analyses of sesame was conducted in western low lands of Tigray. It includes the production year of 2016/17 E.C and bounded of two woredas with six production sites. In the present study 40 respondents of sesame producers were incorporated. Producers were categorized in to full package (row planting, fertilizer and improved seed users), partial package (broadcast, fertilizer and improved seed users) and non package (broad cast and improved seed). Data was analyzed using SPSS version 16 in terms of percentage, mean, model and others. On the other hand, per hectare yield, return, production cost, and benefit cost ratio of each package were statistically different. The mean productivity per hectare for full package, partial package and non package was 6.55, 5.26 and 3.85 quintal sequentially. The mean return per hectare of full package, partial package, and non package was 26243.75, 21746.25 and 13178.91 birr sequentially. The production cost per hectare of full package, partial package, and non package was 13826.74, 12561.35 and 8681.46 birr respectively. The mean benefit cost ratio was 1.90, 1.74 and 1.50 birr respectively for full package, partial package and non package.


Author(s):  
ERICK ABDUL MUTAKABBIR ◽  
NELLA NAOMI DUAKAJU

Ornamental plants are commonly planted by people as decoration. This study aimed to determine income and financial feasibility of ornamental plants business in Samarinda City. This study was done in three months since November 2017 until Januari 2018 in Samarinda City. The sampling method used purposive sampling method with the number of samples as many as 29 respondents.  The data were collected through interviews with respondents. The assesment of business feasibility  was done by using some investment criterias such as Net Present Value (NPV), Internal Rate of Return (IRR), dan Net Benefit Cost Ratio (Net B/C Ratio). The results of this study showed that ornamental plants business in Samarinda City owns the average of investment cost of IDR90,982,931.00 year-1, the average of operating cost of IDR37,307,586.00 year-1, the average of revenue of IDR118,506,206.00 year-1, and the average of income of IDR81,198,620.00 year-1. The assesment results of investment in ornamental plants business in Samarinda City are NPV of IDR75,074,609.00 at discount rate of factor of 12%, IRR of 65%, while Net B/C Ratio of 1,82. This is showed that ornamental plants business in Samarinda City is financially feasible to be done.


2020 ◽  
Vol 9 (1) ◽  
pp. 52-76
Author(s):  
Theophilus Chinonyerem Nwokedi ◽  
Obed C. Ndikom ◽  
Chigozie Uzoma Odumodu ◽  
Ifiokobong I. Okonko

Abstract The study provided economic justification for private sector investment in developing, revitalizing and making operable, the rail-freight-corridors between hub-seaports and inland container depots in Nigeria. It estimated the operator-benefits and profitability potentials of investment in each of the ten rail-freight-corridors consisting of existing but inoperable and proposed rail routes from the major seaports to the Inland container depots in different geopolitical regions of Nigeria. Secondary data on the import and export (cargo generation) capacities of each of the ICD regions to and from the respectively connected hub-seaport were obtained from the Nigerian ports authority statistical report covering a period of two years (2018 – 2019) based upon which the annual expected revenue earnings of the operators were estimated. The cost of investment was also obtained. Benefit-Cost-Ratio (BCR) and Net Present Value (NPV) were used to estimate the operator-benefits and profitability potentials of each rail route. It was found that six of the rail routes have BCR > 1; and NPV>0; implying higher operator-benefits over costs within the period while four of the rail-routes have BCR <1; and NPV <0; implying higher operator-costs over benefits.


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