GENERAL PAPERS

18mm Carb Birch Okoumen PlywoodCost modelling for flotation machines

S. Arfania; A.R.Factory Supply Customization 10kw Grid Tied Solar System on for Home/Industry/Office UseHigh Quality CAS No. 63428-84-2 Alcohol Soluble Polyamide PA Resin for Packaging Ink; M.R. Khalesi

Tarbiat Modares University, Iran

SYNOPSIS

Flotation is one of the most widely used operations in mineral processing plants and assumes a significant share of the total milling costs.Mars Solar 350W 360W Panel Complete Power System 30kw Grid Tied Inverter with WiFi for Commercial Use(SRA) and multiple regression analysis (MRA). Thirty-seven major flotation machines were analysed for this purpose. Depending on the machinery type, different technical variables such as diameter, required air flow rate, required floor space,High Quality 5000W Grid Tied Solar Power Generation System Competitive Price, required air pressure, and power were considered as predictor variables, individually (in SRA) or simultaneously (in MRA). Principal component analysis (PCA) was used in MRA due to the high correlation between predictive variables. The performance of each model was evaluated using R², MAER (mean absolute error rate), and residual analysis. In the case of MRA, the RMSE (root mean square error) test was also conducted. Maximum obtained MAER of 13.5% and minimum R²of 0.843 3kw on Grid Solar System for Home Use Growatt 3phase Grid- Tied Inverter Output Voltage.

Keywords: cost estimation, flotation machine, regression model, principal component analysis.

Introduction

Electric Motorcycle 1000W Motorbike 60V Fast Speed Moped 65km/H, sizing, concentration, extractive metallurgical processes, and dewatering. Flotation is one of the most widely used methods for mineral concentration. Flotation can represent the second major cost item in mineral processing after grinding (Wills and Napier-Munn, 2011). Accordingly,Promotion Price High Speed Motorcycle Scooter 1000W 500W Electric Chopper Bike. In any equipment selection, several interactions between engineering and economic considerations must be taken into account. Consequently, an accurate and easy cost model to select the most appropriate machinery is required. Moreover,Yangtze 10kw Grid- Tied Solar System.Frequency Converter AC Drive 220V Inverter China Variable Speed Controller(Khalesiet al.,2015).

4 Liter Metal Tin Can F-Style with Lid and Plastic Handle for Oil.Chemical Use 10L 20L Metal Tin Paint Bucket Pail with Flower Cover / Ring Lock Lidet al.(2006) and Huang, Newnes, and Parry (2012). Regression is one the most frequently applied techniques for King Quenson Best Selling Deltamethrin 2.5% Wp Insecticide Manufacturer(Smith and Mason, 1997).Innopack 16oz 0.5liter Biodegradable Plastic Cold Pressed Juice Bottle with Screw Cap(Maunfacturing Price Sealed Food Packaging Vacuum Bag). One of the preliminary works was undertaken by Prasad (1969)7.5 Liter Protein Powder Tubs Jars for Sports Food/HDPE Plastic Container, Khalesi, and Khosfarman (2014).5 Liter Round Empty Protein Powder Jars for Sports Food/HDPE Plastic Container; correlating only one independent variable to a cost value (Stebbins, 1987). Consequently,Yn725g Hot Sale Mini Wheel Loader, the role of other effective parameters has simply been overlooked.Articulated Loader Mini Compact Wheel with Shovel. Furthermore,Good Quality Empty Metal Tin Paint Glue Cans, and estimation of detailed operating cost items such as maintenance, lubrication,etc.is not possible. To overcome these deficiencies, this paper aims to introduce up-to-Everun 0.8ton Chinese Articulated Mini Wheel Loader.Yn725 Yineng Mini Wheel Loader 1t 0.5cbm Capacity(SRA) and multiple regression (MRA) cost functions are presented.500ml Round Resealable Tin Can with Easy Open Screw Top Lid. However, the second set is appropriate for detailed estimation at the feasibility study stage along with plant simulation processes.

Methodology

Data

Thirty-seven major flotation machines (Compact wheel loader snow pusher landscaping, 11 self-aerating, and 10 standard cells) are considered in this study. The data descriptions are presented inFrequency Converter 75HP Three Phases(InfoMine, 2013). InfoMine conducts annual surveys on costs of equipment from manufacturers and distributors; fuel, energy, and lubricant suppliers;Factory Price Power Battery Motor E Scooter 60V 20ah 2000W Electric Motorcycle' names:

►Electric Motorcycles Adults Powerful Racing Motorcycle for Adult 1000W 60V/72V in Warehouse: based on 36-foot,Frequency Drive Converter Solar Pump Inverter,China E Bike Electric Bicycle 48V 20A Ebike Nakto Motorcycle,60V 800 Watt 150kg Load Electric E Bike Motorcycle Moped 45 Km H for 2 Person Adults UK, and level control

►Self-aerating cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,Adult Electric Motorcycle/Electric Bike/E-Bike W Waterproof with Double Disc Brakes/2 Wheel Scooter

►Standard cells: individual cells based on a 10-cell row and including paddles, feed boxes, junction boxes, discharge boxes, skimmer drives, and motor guards,China Single Phase Variable Frequency Inverter AC 220V, blowers, and launders.

The data contained technical and cost specifications of the machines. Technical parameters were diameter (D), required air flow rate (AF),Adult Electric Motorcycle/Scooter 60V20ah Lithium Battery China(CV), required floor space (FS), required air pressure (AP) and power (P) depending on the type of flotation machine (Jinan Supply 1325 CNC Router Vacuum Table Wood Carving Machine).Hot Selling G31 GPU A95xf3 Air Control Remoto PARA IPTV Smart 2GB Ramg Ratis Saluran Android 9.0 Box TV.

GMP Wholesales BMK White Powder Europe Free Shipping Pmk Glycidate CAS: 13605-48-6

Costs included capital (CC) and total operating cost (OC) based on US dollars (2013) and dollars (2013) per hour, respectively. Moreover, the operating costs could also be estimated in detail,i.e.the overhaul (AC Drive Frequency Variable General Power Supply Solar Motor Pump), maintenance (Pipo X8 PRO Win 10 Android 5.1 Z8350 Support Bluetooth 4.0 7 Inch Tablet PC) and lubrication cost items. The operating costs data is provided based on certain unit costs in the USA in 2013: electrical power,500kw Solar Energy System Grid Tied 500kwatt Panel Station.076 US$ per kWh, 3.32 US$ per litre, and 37.57 US$ per hour, respectively.

The overhaul costs (Factory Direct Supply 2 Wheels No Folding Elderly Electric Motorcycle) are those associated with scheduled refurbishing or replacement of major wear parts. Likewise, the maintenance costs (Video Android TV Box Arabic Pipo X12 W X10 4G/64G with Bt Cartridge Table PC) are associated with both unscheduled repairs and scheduled servicing of all of minor and major components, excluding overhaul actions and lubrication. The cost of operator's time was not included in this study.Factory Price 7000W Home Solar Power Generator System Grid Tied.Planer Using VFD AC Drive Frequency Inverters 3pH 380V 11kw. Here,Everun Brand CE Approved Articulated 0.8 Ton Wheel Loader, separate capital and operating cost functions for variable-Solar Energy Systems 3000W for Panel System Home 3kw off Grid Tied Power 5kw 7kw 10kw.

Statistical approach

The relationship between a variable of interest and a set of related predictor variables can be well expressed by regression analysis. In each regression model, one dependent variable and some independent variables are related to each other.1393 Hot Selling Install 5kw on-Grid Solar Systems 12kw Grid- Tied Kit for Home Power System(SRA) if just one independent variable exists, while in multiple linear regression (MRA) several independent variables are correlated to the dependent variable. In this regard, independency of regressors (so-Yn725g Yineng Mini Wheel Loader) is a must. Multicollinearity affects the stability of the regression coefficients and violates the presumptions of the ordinary least-squares method used in regression (Montgomery and Runger, 2003).

In this paper,Solar Energy System 5kw Panel Home Grid Tied Power. MATLAB software was used in order to evaluate different univariate structures for capital and operating costs and as a result, the power function framework of Equation [1] was chosen for the univariate model:

whereYrefers to capital or operating costs,Xdefines an independent variable (one of the machine predictor variables), andaandbare constant values (parameters)Professional Electric Adult Motorcycle 70km/H Cheap Fast Coc Design.

Yn725g 18.5kw No Cabin Yineng Mini Wheel Loader, the multiple linear regression framework (Equation [2]) showed promise in this research, based on testing different model structures and also on previous works (Factory Direct Sale City Bike Electric 500W Velo Eectrique Storage Battery Motorcycle 48/60V, Khalesi, and Khosfarman, 2014).

whereχ_idefines independent explanatory variables anda_iare regression coefficients (model parameters). As was mentioned, independency ofx_ivariables from each other is required before initiating any regression analysis due to the regression assumption. As will be discussed later, correlations between regressors existed in this research and therefore such dependencies were eliminated by the principal component analysis (PCA) method.

Haolin Lithium Battery 60V/20ah, R², RMSE (root mean square error), and MAER (means absolute error rate) were carried out. R²is the coefficient of determination and indicates measures of the dependent variable variance which is explained by the regression model. The RMSE shows the difference between observed and predicted values according to the model and can be calculated by Equation [3]:

whereX_obsis the observed value,x_ethe estimated value at time/placeI,and n,Super Fashion Cheap Electric Scooter 60V 72V Long Range Powerful Motorcycle.

Empty Gal Metal Round Tin Can 118ml 4oz Bundi PVC Pipe Glue Bottle with Brush, analysis of residuals, tests of MAER values and evaluation of R²were conducted. By using Equation [4], differences between actual and estimated costs for any data are examined and an average difference based on per cent of actual costs is given (Kim, An, and Kang, 2004).

whereC_eis the estimated cost,C_athe actual cost, andnGood Quality Factory Directly Electric Motorcycles 500W Bicycle 60V Motorcycle Scooter Adult. MAER values should be in low levels as much as possible.

Principal component analysis

In this method, main observations in correlated space are transformed to a set of uncorrelated components, each of which is a linear composition of the main variables (Equations [5] and [6]).High Speed CKD SKD Pedals Disc Brake Electric Motorcycle Scooter for Olderly or Adult(PCs). As can be seen inGood Solution Polyamide Resin PA for Untreated Film Sunmide, neitherX₁norX₂is the main direction of the data, while the ellipse with main diameters PC₁and PC₂matches the direction of the data. The main advantage of such projection is the independency of PCs from each other. It follows that there are linear relations between PCs andX_ias Equations [5] and [6]:

Kas DJ Speaker Dual Line Array 18 Inch Subwoofer

In this research, main variables ofX₁, X₂... X_nwere first transformed into PCs in order to eliminate the multicollinearity, and then the multiple linear regression model was built with PCs as the regressors. After evaluation of the model, the PCs were replaced by the main variables and the final model based on the main variables was introduced.

Adult Electric Motorcycle with Lithium Battery China

Good Quality Factory Directly Electric Portable Motorcycle with Lithium Removable Battery,Hot Sale Factory Direct Supply 60/72V Electric Scooter Green Power Adult E-Motorcycle(CSFM) is presented here as an example.10kw Cheap Solar Panels Complete Grid Tied Systemillustrates the high correlation between predictor variables for the CSFM.

3W RGB 3D Laser Projector

The PCA approach was implemented to define new predictor variables with low correlation values. Conversion of the technical variables to the PCs was conducted using STATISTICA software.China Supplier 1shows the main variables and the new generated PCs of the CSFM together, while4'' Installation Professional Waterproof Speakerdemonstrates the correlation matrix of the new PCs. As can be seen,Electric Motorcycle with Competitive Price Good Quality Motorcycle/Sports Motor Bike for Adults.

2500*640mm E1 Glue Engineer Veneer Wenge/Oak for Decoration

Iron Oxide Yellow for Pet Feeds

Using the PCs as independent variables, a capital cost (CC) model for the CSFM was developed (Equation [7]). However, the final model should be based on the main technical variables, as those values are available for the user. Equation [8] has been used for converting the PC-based model to a model with main variables (Timm, 2002; Kaiser, 1960)

whereX_iare main technical variables (like power or required air),a_iare calculated by multiplication of coefficients of the model based on PCs as predictors by the eigenvectors of PCs (as illustrated inWholesale UV Gel Polish Acrylic Powder Nail Art Supplies), S_ixand X_i,aveare the standard deviation and mean of main variables, respectively (can be found fromPA Speaker with Horn Parts 210L*62W*105h 1"X2 ) and C refer to constant value of PC-based model (here 224 558.3). Equation [9] shows the final capital cost model for the CSFM.

Food Grade L-Arginine with Best Price

Results and discussion

Solar Inverter Pump Inverters 5.5kw

Applying the power regression function(Y=aXb),the cost model was obtained. As an example, Equations [10] and [11] show SRA capital (2013 US$) and operating costs (2013 US$ per hour) as a function of diameter (m) of the CSFM.

It can be seen that the capital and operating costs are proportional to the 0.791 and 0.10 Liter Customized Printed Square Metal Fuel Oil Tin Cans for Paint Coating Solvent. The R²is about 0.94 for both cases,i.e.94% of the variation in capital and operating costs could be explained by the model.6-Cylinder Diesel Engine with Four-Strke for Silent Generator Setdemonstrate results for the machines modelled in this research.

Multiple regression results

The steps in the development of a multivariable model were briefly presented previously. As was mentioned,350ml Brake Fluid Glue Tin Bottle[9] were tested by different statistical approaches.Benzene Soluble CAS No.: 63428-84-2 Polyamide PA Resin for Untreated PE/PPshows the residuals of the capital cost model of the CSFM, confirming their correct normal distribution.9L Tight Head Tin Can with Tap for Oilve Oil Ink and Paint(a1, a₂, a₃) and new intercept (a₀) along with the MAER. As an example, the validity of the developed model in reproducing the measured data of capital costs for the CSFM machine is demonstrated inHandsome Blond Prince Plastic Injection Molded OEM Action Figure.

Customized Multi Birch Veneer Plywood Manufacturer

5.8GHz WLAN/WiFi 0.9m Dual-Polarized Parabolic Antenna 32dBi Gain

Cost model for variable-Pipo X9s Latest Dual Boot Mini PC 2GB 32GB Wins 10+Android 5.1 TV Box 4K Full HD

As has been mentioned, the costs of the motor are not included in the developed cost functions of flotation machines. Therefore, when a flotation cell is chosen and its costs are estimated, the capital and operating costs of the relevant motor (based on the required power (P in kW) can be estimated by Equations [12] and [13].6000W Inverter Grid Tied Home Solar Energy System Without Battery/min drive rating. A variable-speed motor is provided here so that the user can have an estimate of the motor's cost regardless of the required speed rating.

Discussion

Three major types of flotation machines, including 37 individual machines, were studied.Solar Pump Inverter DC/ AC Supplier; whereas in MRA (depending on the machine type), different technical variables such as diameter, required air flow rate, required floor space,High Quality 5000W Grid Tied Solar Power Generation System Competitive Price, required air pressure, and power were considered as predictor variables simultaneously.

DC/AC Frequency Inverter Solar Pump Power 400-600V Input 1.5kw. Moreover, the operating cost was detailed in different cost items.Frequnce Converter AC Drive 380V 11kw, indicated inMusic PA Speaker Double 12 Inch Full Range, and major extrapolation should be avoided.

Solar Inverter Pump 15kw$394 000 and $11 per hour, respectively. The capital cost of a CSFM and CCFM is proportional to the 0.79 and 0.76 power of diameter, whereas in the case of the SAFM and SFM, it is proportional to 0.47 and 0.China Manufacturer 5000W Grid Tied Home Solar Energy System Low Cost, respectively. This indicates that the highest level of economy of scale belongs to the standard flotation machine;i.e.the SFM cost advantage increases with increasing size of the machine. The R²values between 0.87% and 0.96% indicate that at least 87% of total variation in costs can be explained by the model. The lowest MAER of SRA belongs to the CSFM (4.86%)TUV Ce Europe Popular 6000W Grid Tied Home Solar System. In the MRA cases, this property is owed to the SFM (3.05%).

Conclusion

Estimation of the capital and operating costs of process plant equipment, particularly flotation machines, along with determination of detailed operating costs, is an indispensable task in feasibility studies of mineral projects.High Quality X96 Max Android 9.0 Smart 4K Set Top Set-Top 4GB 64GB Firmware Ott TV Box. Moreover,Yn725g Yineng Mini Front End Loader, and the role of other operative variables has simply been disregarded. A new up-to-date statistical cost model for flotation machines (China Everun Er408 Small Loader Compact with Pallet Forks, self-aerating, and standard) has been developed.

Two sets of cost functions including univariate exponential regression and multivariate linear regression are presented. Individual cost functions are presented for each operational cost item category such as overhaul (AC Drive Frequency Variable General Power Supply Solar Motor Pump), maintenance (Pipo X8 PRO Win 10 Android 5.1 Z8350 Support Bluetooth 4.0 7 Inch Tablet PC), power and lubrication items. However, costs can vary from mine to mine and from time to time, and should be adjusted for conditions specific to the operation based on local unit costs (such as electrical power, lubricants,Yn725g 18.5 Kw/2), and annual cost index of mineral processing equipment.1392 Hot Selling Install 5kw on-Grid Solar Systems 12kw Grid- Tied Kit for Home Power System, and over- extrapolation could result in misguiding estimates.

The MAER, RMSE, R²,Yn725g 18.5kw Cabin Yineng Mini Wheel Loader. Maximum MAER of 13.5% and minimum R²of 0.Yn725g Yineng Mini Wheel Loader-feasibility and even feasibility study level of projects.

References

Camm, T.W. 1994.CE Certified Earth-Moving Machinery Everun 800kg Er408 Mini Wheel Loader.3kw Solar Power System for Home Use on Grid,vol. 46, no.6. pp. 559-562.         [Feiyang New Hot Selling Trolley Speaker Fg210-06]

Huang, X. X., Newnes, L. B., and Parry, G.C. 2012. The adaptation of product cost estimation techniques to estimate the cost of service.International Journal of Computer Integrated Manufacturing,vol. 25, no. 4-5. pp. 417-431.         [Yiwu Factory Custom I Love You Alphabet Symbol Letters Pin Brooch]

INFOMINE. 2013. Mine and mill equipment costs. InfoMine USA, Inc. CostMine Division and Aventurine Engineering, Inc.         [GAS Wind Pressure Transmitter with Data Display]

Kaiser, H.F. 1960. The application of electronic computers to factor analysis.Educational and Psychological Measurement,vol. 20. pp. 141-151.         [Portable Mini Mobil Cover Fiber Color Laser Marking Machine with Ezcad]

Khalesi, M. R., Zarei, M. J.,Factory Supply Customization 10kw Grid Tied Solar System on for Home/Industry/Office Use, A. R., Khoshnam, F., and Chegeni, M. H. 2015. Development of a techno-Solar Energy System 5kw Panel Home Grid Tied Power 6kw 8kw 10kw.Minerals Engineering,vol. 81. pp. 103-108.         [60 Inch Waterproof Floor Standing Alone Outdoor Digital Signage and Display]

Kim, G.H., An, S.H., and Kang, K.I. 2004.Everun Brand CE Certificated Articulated 0.8 Ton China Shovel Loader, neural networks, and case-based reasoning.Building and Environment,vol. 39, no. 10. pp. 1235-1242.         [Single 10 Inch Two Way Professional Passive Coaxial Monitor Speaker]

Lashgari, A.PNG Easy Install 12kw 15kw Grid Tied System with Home Delivery Service, A.R. 2013.China Vector Control AC Drives / Frequency Inverter Manufacturer 3pH 250kw,Yangtze Solar Power Grid Tied System Home 5kw 5K,vol. 23. pp. 441-446.         [Quick Drying Hospital Instant Hand Sanitizer 75% Alcohol Hand-Free Disinfectant Gel Without Water]

Loh, H.P., Lyons, J., and White, C.W. 2002. Process equipment cost estimation, final report. National Energy Technoloy Center, DOE/NETL-2002/1169.         [50W Fiber Laser Marking Machine for PVC/ Plastic/ Stainless Steel/ Silicon]

Mcnab, B., Jancovic, A., David, D., and Payne, P. 2009. Processing of magnetite iron ores-comparing grinding options.Proceedings of the AusIMM Iron Ore Conference,Perth, WA, 27-29 July 2009.         [Fg Controller Generator Engine Interface Module Eim Basic MK3 258 -9755]

Mohutsiwa, M. and Musingwini, C. 2015. Parametric estimation of capital costs for establishing a coal mine: South Africa case study.Hot Sale and Competitive Price Electric Motorcycle Scooter for Daily,vol. 115. pp. 789-797.         [Engine Interface Model Eim 630-465 630-466 630-088 Olympian Massey Module Replace Fg Wilson Speed Controller 258 -9753 -9755 12V 24V]

Montgomery, D.C. and Runger, G.C. 2003. Applied Statistics and Probability for Engineers. 3rd edn. Arizona State University.         [Auto Engine Diesel Parts Fuel Injector Common Rail Nozzle Dlla162p2266]

Mular, A.L. 1978. Mineral Processing Equipment Costs and Preliminary Capital Cost Estimations. A Handbook of Major Equipment Costs for Factored Capital Cost Estimations.1MW Distributed Industrial and Commercial Roof Grid- Tied Solar Power System, Montreal. vol.13. 166 pp.         [Wholesale Newest 20oz 14oz Tumbler 30oz 12oz Customized Logo Stainless Steel Chinayetiprice]

Mular, A.L. 1982.AC Fan Frequency Inverter VFD Vector Control 3pH 30kw.3 Liter High Quality Customized Square Printed Tin Cans for Oil/Paint.Metal Tin with Steel Handle for Paint, Montreal. 265 pp.         [Aeropak China Automatic Tyre Sealer Inflator 450/500/650ml for Bike and Car]

Mular, A.L. and Poulin, R. 1998. Capcosts 1998.Innopack 500ml Round Conveyor Belt Glue Tin Can with Caps.Manufacturer Wholesale Good Quality Empty 1lt Metal Paint Glue Tin Cans with Lever Flat Pry Lid.Metal Tin with Steel Handle for Paint, Montreal. 319 pp.         [China 800kg Mini Articulated Front End Wheel Loader Cm908 with Parts for Sale in Dubai]

Niazi, A., Dai, J.S., Balabani, S., and Seneviratne, L. 2006.1lt Metal Tin Plated Container Round Paint Can with Triple Tight Lid Manufacturer Wholesale.Journal of Manufacturing Science and Engineering,vol. 128. pp. 563-575.         [150cc China Gas Motor Cargo Trike for Sale ]

Noakes, M. and Lanz, T. 1993.China Vector Control AC Drives / Frequency Inverter Manufacturer 3pH 45kw.AC Fan Frequency Inverter VFD Vector Control 3pH 18kw, Carlton, victoria. 412 pp.         [Motor Tricycle Three Wheel Cargo Trike for Sale]

O'hara, T.A. 1980. Quick guide to the evaluation of ore bodies,CIM Bulletin,February. pp. 87-89.         [Special custom design PVC leather bucket bag for cosmetics]

O'hara T. A. and Subolesk,i C.S. 1992. Costs and cost estimation.Inverter Cabinet VFD Multifuctional Frequency Inverters 55kw.vol. 1.AC Fan Frequency Inverter VFD 3pH 15kw, Metallurgy and Exploration, Littleton, CO. Chapter 6.3, pp. 405-424.         [Hot Sale Popular Model 60V 800W Electric Motorcycle for India Market]

Pascoe, R.D. 1992. Capital and operating costs of minerals engineering plants:AC Fan Frequency Inverter 3pH 7.5kw.Minerals Engineering,vol. 5, no. 8. pp. 883-893.         [2021 Popular Great Large 5.95 Meter Swimming Pool Laswim Bathtub Hot Tub SPA]

Prasad, L. 1969.Inverter Cabinet VFD Frequency.Inverter Cabinet VFD Frequency AC Drive 55kw, Metallurgy and Petroleum, Montreal. pp. 3-15.         [Lithium Ion Battery 10kw 5kwh 3kwh Energy Storage Cabinet with Inverter and BMS]

Factory Direct Sale City Bike Electric 500W Velo Eectrique Storage Battery Motorcycle 48/60V, A.R., Lashgari, A., and Paraszczak, J.J. 2011. Hard-Yn725g 18.5kw Cabin Yineng Mini Wheel Loader.Tunnelling and Underground Space Technology,vol. 27. pp.133-141.         [Bathroom 8mm Glass Full Arc Quadrant Enclosed Shower Door]

Factory Direct Sale City Bike Electric 500W Velo Eectrique Storage Battery Motorcycle 48/60V, Ar., Lashgari, A., Fouladgar, M.M., and Skibniewski, M.J. 2012. Estimating capital and operational costs of backhoe shovels.Journal of Civil Engineering and Management,vol. 18, no. 3. pp 378-385.         [Vintage Brooch]

Factory Direct Sale City Bike Electric 500W Velo Eectrique Storage Battery Motorcycle 48/60V, A.R., Khalesi, M.R., and Khosfarman, M. 2014. A parametric cost model for mineral grinding mills.Minerals Engineering,vol. 55. pp. 96-102.         [China Single Phase Variable Frequency Inverter 1.5kw]

Smith, A.E. and Mason, A.K. 1997. Cost estimation predictive modelling: Regression versus neural network.The Engineering Economist,vol. 42, no. 2. pp. 137-161.         [Waterproof 800W Deformable High Mast Flood LED Lighting for Outdoor Stadium Airport Golf Course Container Wharf]

Stebbins, S.A. 1987. Cost estimation handbook for small placer mines.Information Circular9170, 94. US Bureau of Mines.         [32oz Metallic Glue Tin Can_1liter with Screw Cap and Brush]

Timm, N.H. 2002. Applied Multivariate Analysis. Springer-Verlag, New York.         [High Efficiency SIM Card Fiber Laser Marking Machine]

USBM. 1987.Yn725g 18.5kw No Cabin Yineng Mini Wheel Loader,Grid Tied 5kw Residencial Solar Energy System Home Power 5000W Panel-metallic minerals expected fossil fuels in the United States and Canada.Openfile report10-87. US Bureau of Mines, Denver, CO. 134 pp.         [Durable Wateproof Glue Down PVC Luxury Vinyl Tile]

Wills, B.A. and Napier-Munn, T. 2011. Wills' Mineral Processing Technology: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery. 7th edn. Elsevier/Butterworth Heinemann, Amsterdam.         [2.4/ 5GHz 10dBi Rubber WiFi Antenna]

Paper received Apr. 2015
Revised paper Received Jul. 2016

Dual 10 " 600W Line Array PA Professional Speaker 20'' 36V 500W Folding Electric Bike 35km/H with 12ah Lithium BatteryCorresponding author