scholarly journals Assessment of the harvesting costs of different combine harvester fleets

2019 ◽  
Vol 65 (No. 1) ◽  
pp. 25-32 ◽  
Author(s):  
Jüri Olt ◽  
Keio Küüt ◽  
Risto Ilves ◽  
Arne Küüt
Keyword(s):  
Cost Price ◽  
Combine Harvester ◽  
Practical Information ◽  
Combine Harvesters ◽  
The Cost ◽  
Harvesting Costs ◽  
Collection Methods

This study discusses practical collection methods of cereal harvesting costs in different agricultural holdings in order to effectively manage combine harvester fleets, make economically reasoned decisions on the exploitation of combine harvesters, reduce harvesting costs and consequently the cost price of cereals. For this purpose, the author used work results of combine harvesters monitored by three randomly selected agricultural holdings, collected practical information on harvesting, analysed this information and provided assessments on the effectiveness of their combine harvester fleet. Evidently, not all combine harvester fleets and combines operate with the same efficiency, as their harvesting costs are different.

High Technology Options for Sheep Shearing III: Chemical and Biological Defleecing

1987 ◽  
Vol 16 (2) ◽  
pp. 68-76
Author(s):  
P. R. W. Hudson
Keyword(s):  
High Technology ◽  
Cost Price ◽  
Shearing Mechanism ◽  
Biological Methods ◽  
The Cost ◽  
Harvesting Costs

Two earlier articles have considered the cost-price squeeze facing the Australian woolgrower, and the solutions being sought to reduce wool harvesting costs. The first concentrated on the improvements to existing shearing methods, especially the shearing mechanism itself. The second summarised the progress of a programme aiming to automate shearing. This concluding article considers the research which has been undertaken to evaluate chemical and biological methods of wool harvesting.

scholarly journals Sensitivity analysis of key operating parameters of combine harvesters

2016 ◽  
Vol 62 (No. 3) ◽  
pp. 113-121 ◽  
Author(s):  
M. Kavka ◽  
M. Mimra ◽  
F. Kumhála
Keyword(s):  
Sensitivity Analysis ◽  
Unit Cost ◽  
Mean Value ◽  
Unit Price ◽  
Operating Parameters ◽  
Purchase Price ◽  
Personnel Costs ◽  
Combine Harvester ◽  
Combine Harvesters ◽  
The Cost

The sensitivity analysis of key operating parameters on the average annual sub-profit in a group of three combine harvesters operating in companies providing agricultural services were analysed. Based on the results of the cost analysis, the following key operating parameters with the greatest influence on the costs were identified: the purchase price of the machine, the price of fuel, maintenance costs, personnel costs and annual performance. These parameters were used in the sensitivity analysis to investigate their effect on unit costs. Changing the above-mentioned parameters is calculated within ± 30% from their mean value. To perform a sensitivity analysis of the average annual sub-profit of combine harvesters, the unit price of mechanized work was additionally used. The results showed that greatest impact on both the average annual earnings of combines operation and on the changes in unit cost was those of the annual performance of the combine harvester, combine harvester purchase price and the cost of fuel. On the other hand, maintenance and personnel costs had a smaller influence concerning these changes of parameters.

Determination of the minimum number of technological bases of a part

2020 ◽  
pp. 73-75
Author(s):  
B.M. Bazrov ◽  
T.M. Gaynutdinov
Keyword(s):  
Cost Price ◽  
Labor Input ◽  
Part Surface ◽  
Technological Base ◽  
Size Accuracy ◽  
Minimum Number ◽  
The Cost ◽  
Input Cost ◽  
Selection Of

The selection of technological bases is considered before the choice of the type of billet and the development of the route of the technological process. A technique is proposed for selecting the minimum number of sets of technological bases according to the criterion of equality in the cost price of manufacturing the part according to the principle of unity and combination of bases at this stage. Keywords: part, surface, coordinating size, accuracy, design and technological base, labor input, cost price. [email protected]

scholarly journals Site‐specific nitrogen balances based on spatially variable soil and plant properties

2021 ◽  
Author(s):  
Martin Mittermayer ◽  
August Gilg ◽  
Franz-Xaver Maidl ◽  
Ludwig Nätscher ◽  
Kurt-Jürgen Hülsbergen
Keyword(s):  
Soil Properties ◽  
N Uptake ◽  
Nitrate Content ◽  
Site Specific ◽  
Nitrate Losses ◽  
Wide Range ◽  
Reduction Strategies ◽  
Combine Harvester ◽  
Digital Methods ◽  
Collection Methods

AbstractIn this study, site-specific N balances were calculated for a 13.1 ha heterogeneous field. Yields and N uptake as input data for N balances were determined with data from a combine harvester, reflectance measurements from satellites and tractor-mounted sensors. The correlations between the measured grain yields and yields determined by digital methods were moderate. The calculated values for the N surpluses had a wide range within the field. Nitrogen surpluses were calculated from − 76.4 to 91.3 kg ha−1, with a mean of 24.0 kg ha−1. The use of different data sources and data collection methods had an impact on the results of N balancing. The results show the need for further optimization and improvement in the accuracy of digital methods. The factors influencing N uptake and N surplus were determined by analysing soil properties of georeferenced soil samples. Soil properties showed considerable spatial variation within the field. Soil organic carbon correlated very strongly with total nitrogen content (r = 0.97), moderately with N uptake (sensor, r = 0.60) and negatively with N surplus (satellite, r = − 0.46; sensor, r = − 0.56; harvester, r = − 0.60). Nitrate content was analysed in soil cores (0 to 9 m) taken in different yield zones, and compared with the calculated N surplus; there was a strong correlation between the measured nitrate content and calculated N surplus (r = 0.82). Site-specific N balancing can contribute to a more precise identification of the risk of nitrate losses and the development of targeted nitrate reduction strategies.

Effect of Vibration on Rapeseed Header Loss and Optimization of Header Frame

2021 ◽  
Vol 64 (4) ◽  
pp. 1247-1258
Author(s):  
Yang Li ◽  
Lizhang Xu ◽  
Zhipeng Gao ◽  
En Lu ◽  
Yaoming Li
Keyword(s):  
Modal Analysis ◽  
Engine Speed ◽  
Vibration Measurement ◽  
List Type ◽  
Positive Correlation ◽  
Combine Harvester ◽  
Analysis System ◽  
Combine Harvesters ◽  
Relationship Of ◽  
The Relationship

HighlightsThe relationship of vibration and header loss was studied by multi-point vibration measurement and loss collection test.There was an approximately linear positive correlation between total header vibration and total rapeseed header loss.The header frame was analyzed and optimized through modal simulation and testing.The total rapeseed header loss of the improved header was reduced by 33.2% to 46.9%.Abstract. In view of the current large rapeseed header losses of rape combine harvesters, the effects of the header on rapeseed header loss were studied from the perspective of vibration. First, the vibrations at various measuring points on the header during rape harvest were studied using a data acquisition and analysis system while performing collection tests of rapeseed header loss with the sample slot method. The relationships between total header vibration and total rapeseed header loss and between vertical cutter vibration and rapeseed vertical cutter loss were shown to have a positive correlation, and they all increased with the increase in engine speed. Vertical cutter loss accounted for 31.2% to 42.4% of the total rapeseed header loss. Modal analysis and optimization of the header frame were then performed by simulation and test. The natural frequencies of the first-order and second-order modes of the optimized header were increased, and the possibility of resonance with other working parts was eliminated. Finally, the improved header was tested during rape harvest. The results showed that the total vibration of the improved header was reduced by 19.9% to 43.9%, and the total rapeseed header loss was reduced by 33.2% to 46.9%. The vertical cutter vibration was reduced by 30.5% to 49.8%, and the rapeseed vertical cutter loss was reduced by 20.8% to 34.7%. In addition, the vibration and rapeseed loss of the improved header had relatively slow rates of increase with the increase in engine speed. The method of reducing rapeseed loss by reducing the header vibration achieved an obvious and positive effect. Keywords: Frame optimization, Modal analysis, Rape combine harvester, Rapeseed header loss, Vibration.

An improved method of calculating the cost price of the product

1972 ◽  
Vol 3 (2) ◽  
pp. 191-194
Author(s):  
N. D. Novikova ◽  
E. N. Arnoldova ◽  
N. P. Bogatova ◽  
Z. V. Bobrova
Keyword(s):  
Cost Price ◽  
Improved Method ◽  
The Cost

scholarly journals ANALISIS SISTEM PENGENDALIAN INTERNAL ATAS PEMBIAYAAN MURABAHAH PADA BRI SYARIAH KC MANADO

2018 ◽  
Vol 13 (04) ◽  
Author(s):  
Ummu Almaas Khoirunnisaa ◽  
Hendrik Manossoh ◽  
Dhullo Afandi
Keyword(s):  
Control System ◽  
Internal Control ◽  
Descriptive Analysis ◽  
Internal Controls ◽  
Selling Price ◽  
Internal Control System ◽  
The Cost ◽  
Document Review ◽  
Rules Set ◽  
Collection Methods

            Murabaha is a sale and purchase agreement with the selling price of goods at cost plus an agreed profit which the seller must disclose the cost of the goods to the buyer. The purpose of this research is to analyze the internal control system applied to BRI Syariah KC Manado whether it has been effective and in accordance with the principles of COSO (Committee Of Sponsoring Organizations). Data analysis method of this research is using descriptive analysis that compares the results of observations, interviews, document analysis established by the company with existing theory. Data collection methods in this study are interviews, observation, and document review. The results shows that internal controls applied for murabahah financing at BRI Syariah KC Manado include rules set by management, organizational structure, forms and documents used in murabahah financing, recording of legitimate financing transactions, and monitoring of financing. Internal control of murabahah financing at BRI Suyariah KC Manado has been running quite well. But in application still found weaknesses that can hinder the implementation of internal controls in the company. Still found employees who do double job. This is not in accordance with the principle of COSO, where Commitment in the Competence of employees should be improved and more qualified in various areas of specialization. BRI Syariah KC Manado in applying internal controls can be affirmed and in accordance with the principles of COSO.Keywords: COSO, murabahah financing, internal control system.

scholarly journals Methods of identifying grain production cost when threshing grain crops in view of the need in combine harvesters and combine operators

2019 ◽  
Vol 49 (2) ◽  
pp. 85-93 ◽  
Author(s):  
G. E. Chepurin ◽  
A. P. Tsegelnik
Keyword(s):  
Crop Yield ◽  
Production Cost ◽  
High Performance ◽  
Operating Speed ◽  
Grain Crops ◽  
Grain Crop ◽  
Combine Harvester ◽  
Definition Of ◽  
Combine Harvesters

The paper presents substantiation of the rational use of combine harvesters’nominal throughput when threshing grain crops with the yield ranging from 0.8 to 5.0 t/ha and over. The main factors that determine nominal throughput of combine harvesters and their operational indicators are identified. The structure andcontents of thetechnological passport of combine harvesters are substantiated, and the algorithm of effective determination of their key operational indicators, based on the passport, are developed. These indicators depend on harvesting technology, grain crop yield, the share of non-grain part in the threshed grain bulk, the coverage of swath headers and direct-cut headers, and the operating speed of combine harvesters. The definition of the term “technological passport of the combine harvester” is given. Maximum and minimum allowable grain crop yield is established for the rational load of combine harvesters threshing at the standard operating speed of7.5 km/hrecommended by the Ministry of Agriculture of theRussian Federation. The existing methods make it possible to determine the operational efficiency of high-performance machinery by operational costs. However, they do not take into account the shortage of human resources when determining production cost of the threshed grain. As a result of the research conducted, the algorithm and techniques of determination of actual grain cost when harvesting grain crops by direct combining and swath harvesting methods are developed taking into account the need in combines of an i-class and combine operators. Production cost of grain threshed on the area of1000 hectarescalculated by the techniques developed, allows to define the minimum estimated and actual grain cost for an i-class combine harvester by direct combining and swath harvesting methods.

scholarly journals Braking Efficiency and Stability of Chassis Braking System of Combine Harvester: The Theoretical Derivation and Virtual Prototype Simulation

2019 ◽  
Vol 2019 ◽  
pp. 1-18 ◽  
Author(s):  
Peilong Li ◽  
Hongmei Xu
Keyword(s):  
Virtual Prototype ◽  
Rear Wheel ◽  
Test Methods ◽  
Theoretical Derivation ◽  
The Road ◽  
Braking System ◽  
Directional Stability ◽  
Driving Speed ◽  
Combine Harvester ◽  
Combine Harvesters

With the advancement of agricultural mechanization, the safety of agricultural vehicles has aroused extensive concern. However, conventional methods evaluate the performance of the combine harvesters in a laborious and inaccurate filed-test way. It is still a challenge to evaluate their performance in a theoretical derivation-based simulation way. Here, we accurately derive the braking model of the combine harvester, which provides a guidance for further braking simulation. Firstly, a four-wheel braking system was designed and theoretically checked. Secondly, the virtual prototype of the chassis braking system was established in ADAMS, in consideration of the complicated contact characteristics between the tire and the road and between the friction pad and the brake disk. Finally, simulation experiments of braking efficiency and directional stability were carried out under different braking conditions. By this means, we find a novel effective yet simple way to optimize the braking efficiency as well as the sufficient braking stability of combine harvesters. The results show that braking efficiency would be improved with stronger braking force, lower initial braking velocity, and lighter weight of the combine harvester. Compared with straight-line braking, steering braking shows lower braking efficiency and less inclination of rear wheel bounce under the same braking conditions. As for braking directional stability, the lateral slippage would be increased with the locking of rear wheels, higher driving speed, or lower road adhesion coefficient. In addition, the simulation results are in agreement with the theoretical results, proving the validity of the virtual prototype simulation. Overall, other than traditional filed-test methods, our method provides an effective yet simple way for designing and evaluating the chassis braking system of combine harvesters.

Study on the price of water rights trading between agriculture and industry based on emergy theory

2019 ◽  
Vol 19 (7) ◽  
pp. 2044-2053
Author(s):  
Wenge Zhang ◽  
Li Tan ◽  
Huijuan Yin ◽  
Xinwei Guo
Keyword(s):  
Water Resources ◽  
Water Conservation ◽  
Economic Value ◽  
Water Rights ◽  
Active Role ◽  
Cost Price ◽  
Pricing Model ◽  
Stage Of Development ◽  
Emergy Theory ◽  
The Cost

Abstract A water rights trading scheme in China is currently in its initial stage of development, but is without a complete pricing mechanism. This paper proposes a pricing model for transfers of water rights from agriculture to industry in water-deficient areas of China. Both the cost price and the earnings price are considered and incorporated into the model. The cost price includes construction costs, operation and maintenance costs, renewal and reconstruction costs, and economic compensation for ecological damage. The earnings price is calculated according to a reasonable return coefficient and the difference in economic value of the water resources to the buyer and seller. The value of water resources was estimated based on emergy theory in accordance with the principle of mutual benefits equilibrium. This pricing model is then applied to the transfer of surplus water rights arising from agricultural water conservation schemes to industrial uses in the Southbank Ordos Irrigation Zone of the Inner Mongolia Autonomous Region. The results indicate that this pricing model could provide technical support to the scientific and reasonable pricing of water rights transactions in water-deficient areas and that it could play an active role in promoting the healthy development of future water markets.

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