OPTIMAL ANALYSIS OF FARM AGRICULTURAL MACHINERY EQUIPMENT BASED ON MATHEMATICAL MODELLING

2020 ◽  
pp. 333-340
Keyword(s):  
Mathematical Modelling ◽  
Production Efficiency ◽  
Programming Model ◽  
Constraint Equation ◽  
Economic Benefits ◽  
Agricultural Machinery ◽  
Optimization Analysis ◽  
Agricultural Modernization ◽  
Actual Equipment ◽  
Optimal Allocations

With the development of science and technology, the degree of agricultural mechanization is getting higher and higher. Agricultural machinery is an important support for the development of agricultural modernization. Optimizing the allocation of agricultural machinery is conducive to improving agricultural production efficiency and economic benefits. In this paper, mathematical modelling method is mainly used in the analysis and optimization of agricultural machinery configuration. By determining the objective function and constraint equation, combined with the actual situation of Xinjiang Production and Construction Corps, the linear programming model and workload model of agricultural machinery and equipment optimization are established. Finally, the actual number of agricultural machinery and equipment and the number of optimal allocations of Xinjiang Production and Construction Corps farm were compared. The effectiveness of the optimization model is verified by comparing the optimized agricultural machinery equipment with the actual equipment. The results show that the optimized equipment model has good optimization effect. On the basis of reducing the number of agricultural machinery and equipment, the matching rate of agricultural machinery is improved, and the operation cost of agricultural machinery is effectively reduced. It is hoped that this study can provide certain reference and reference for the optimization analysis of agricultural machinery and equipment based on mathematical modelling.

Rent-seeking and firm value: Chinese evidence

2017 ◽  
Vol 20 (2) ◽  
pp. 239-272 ◽  
Author(s):  
Sihai Li ◽  
Huiying Wu ◽  
Xinfeng Jiang
Keyword(s):  
Firm Value ◽  
Production Efficiency ◽  
Corporate Philanthropy ◽  
Stock Exchange ◽  
Analytical Framework ◽  
Rent Seeking ◽  
Economic Benefits ◽  
Weak Institutions ◽  
Use Of Resources ◽  
The Government

AbstractWe examine whether engagement in rent-seeking improves firm value in China. Rent-seeking is defined as a firm's use of resources to establish a relationship with the government to obtain government-controlled resources. We incorporate political rents and associated costs into an analytical framework to examine the relationship between rent-seeking and firm value. Using a sample of non-state-owned firms listed on the Shenzhen Stock Exchange and the Shanghai Stock Exchange from 2007 to 2013, we find evidence of the presence of political rents in the form of government subsidies and evidence of associated costs in the forms of corporate philanthropy and excess management remuneration, which largely explains the insignificant relationship found between rent-seeking and firm value. Our further analysis shows that rent-seeking behavior of firms reduces production efficiency, providing additional evidence to support our thesis that engagement in rent-seeking does not enhance firm value in the Chinese context. In an economy with weak institutions, in particular with weak protection for shareholders, managers and politicians can become rent-seekers and take a considerable share of the economic benefits derived from rent-seeking.

Calculation of regional agricultural production efficiency and empirical analysis of its influencing factors-based on DEA-CCR model and Tobit model

2021 ◽  
pp. 1-14
Author(s):  
Pengfei Zhou ◽  
Siyuan Yang ◽  
Xiaohang Wu ◽  
Yang Shen
Keyword(s):  
Empirical Analysis ◽  
Influencing Factors ◽  
Agricultural Production ◽  
Production Efficiency ◽  
Malmquist Index ◽  
Tobit Model ◽  
Annual Growth Rate ◽  
Productivity Level ◽  
Agricultural Modernization ◽  
Ccr Model

The improvement of agricultural production efficiency and the transformation of production mode are the core of promoting agricultural modernization. Taking Chongqing as a sample case, this paper uses DEA-CCR Model, Malmquist Index and Tobit Model to calculate and analyze its agricultural production efficiency and its influencing factors, and accurately identifies the problems existing in its agricultural transformation and development. It has an important policy reference value for improving agricultural innovation and competitiveness, promoting the steady development of rural revitalization, and realizing agricultural modernization, which also provides some reference and enlightenment for countries or regions with similar characteristics of mountain agriculture development in the world to enhance regional agricultural production efficiency. Through empirical analysis and investigation, it is found that the overall agricultural production efficiency of Chongqing remains at the productivity level of 0.8 from 2009 to 2018, with an average annual growth rate of 12.8%, but there is a large gap in the level of regional development. Through Malmquist Index decomposition, it is found that agricultural technology progress has the greatest contribution to the improvement of production efficiency. Financial support for agriculture, urbanization level, regional economic development level and highway mileage have a significant positive impact on production efficiency, while the level of farmers’ disposable income has a negative impact on the increase of production efficiency, and the income gap between urban and rural residents fails to pass the significance test.

scholarly journals A New Technology for Smooth Blasting without Detonating Cord for Rock Tunnel Excavation

2020 ◽  
Vol 10 (19) ◽  
pp. 6764
Author(s):  
Chunde Ma ◽  
Weibin Xie ◽  
Zelin Liu ◽  
Qiyue Li ◽  
Jiaqing Xu ◽  
...  
Keyword(s):  
Production Efficiency ◽  
New Technology ◽  
Economic Benefits ◽  
Critical Distance ◽  
Production Costs ◽  
Emulsion Explosive ◽  
Tunnel Face ◽  
Tunnel Excavation ◽  
Rock Tunnel ◽  
Smooth Blasting

In this paper, the aim is to achieve safe, rapid excavation of an extra-long, large-cross-section highway tunnel in Eastern Tianshan, as well as to reduce production costs, simplify production processes, reduce cycle time, and improve production efficiency. In this study, we explored a new technology for smooth blasting without a detonating cord. A series of sympathetic detonation experiments were conducted in the tunnel face to determine critical distances. The critical distance for No. 2 rock emulsion explosive under blasthole constraints was successfully measured to be approximately 1.0–1.1 m. Based on the critical distance, a new charging structure was designed for tunnel excavation. To assess the influence of the new charging structure on blasting performance, its economic benefits, and its feasibility, full-section tests were performed in the East Tianshan Tunnel. The application of the new charging structure produced good smooth blasting results. It not only simplified the charging process and produced smooth blasting without detonating cord in peripheral holes, but also guaranteed normal excavation, an appropriate tunnel profile, and reasonable overbreak and underbreak volumes. This had remarkable economic benefits and possesses better promotional value.

Sustainable grazing systems for the Central Tablelands of New South Wales. 5. A bioeconomic framework for assessing the long-term economic benefits of grazing management tactics and implications for sustainability

2006 ◽  
Vol 46 (4) ◽  
pp. 495 ◽  
Author(s):  
R. E. Jones ◽  
P. M. Dowling ◽  
D. L. Michalk ◽  
W. McG. King
Keyword(s):  
Programming Model ◽  
New South ◽  
New South Wales ◽  
Economic Benefits ◽  
Grazing Management ◽  
South Wales ◽  
Grazing Systems ◽  
Sustainable Grazing ◽  
Management Tactics

There have been significant declines in the perennial grass (PG) content in native and sown pastures across temperate Australia. Not only has this reduced agricultural productivity, it has contributed to more serious degradation, such as loss of soil and biodiversity, decreasing water quality, and dryland salinity caused by rising watertables. Results from the Sustainable Grazing Systems Key Program (SGS) research undertaken at Carcoar on the Central Tablelands of New South Wales were reported by Michalk et al. (2003). This research indicated that grazing management tactics can be used to manipulate pasture composition, thereby changing animal production and water-use patterns. The main grazing tactic investigated was termed a summer grazing rest, where resting was imposed in late spring if PG composition was <50%. Reported in this present paper is an economic framework for valuing the long-term benefits of grazing management tactics. The framework involves the development of a bioeconomic modelling system that links a dynamic programming model with biophysical models for water and environmental processes, soil fertility, pasture growth, livestock energy requirements and the change in pasture species composition. The study concludes that long-term economic returns are improved by strategies, e.g. a summer rest, that lead to an increase in PG composition over time. The study also determined that environmental factors, such as deep drainage, runoff and soil loss, are reduced as perenniality is increased.

Development and Application of CAE Automatic System Based-On Tcl/Tk

2013 ◽  
Vol 748 ◽  
pp. 370-375
Author(s):  
Da Yong Jiang ◽  
Huai Wen Zheng ◽  
Lei Cai ◽  
Bin Qiu
Keyword(s):  
Static Analysis ◽  
Automobile Industry ◽  
Automatic System ◽  
Production Efficiency ◽  
Rapid Development ◽  
Economic Benefits ◽  
Labor Costs ◽  
Work Pattern ◽  
Rear Suspension ◽  
Key Factor

With the rapid development of the automobile industry, improving production efficiency has become a key factor to enhance competitiveness. However, during the CAE R&D process, it has a serious impact on the labor costs due to the operation repeatability, that is to say, this work pattern drastically reduces the company's production efficiency and economic benefits, that is why it is very essential to develop the CAE automatic system. In this paper, how to develop the CAE automatic system is discussed in detail firstly, and then through the linear static analysis for a rear suspension to verify the feasibility and value of the CAE automatic system.

Optimization Analysis of Different Excavation Offsets in Railway Pilot Tunnel by CRD Method

2014 ◽  
Vol 505-506 ◽  
pp. 134-138
Author(s):  
Chun Kui Li
Keyword(s):  
Production Efficiency ◽  
Ground Surface ◽  
Simulation Method ◽  
Subway Station ◽  
Optimization Analysis ◽  
Tunnel Excavation ◽  
Construction Model ◽  
Surface Settlements ◽  
Stress Variations ◽  
Optimal Construction

This paper focuses on the construction of 10 railway pilot tunnels by CRD method in Jiefang Road subway station in Changchun. To achieve the optimal construction offsets during the pilot tunnel excavation, reduce the impacts of group cavern effect, and maximize the production efficiency, the construction model of railway pilot tunnel in subway station was created by the finite difference software Flac3D. The author used the numerical simulation method to analyze the ground surface settlements and the stress variations with three different construction offsets. Then the optimal construction offset was obtained. It could provide a theoretical guidance to the construction of a similar project.

Design of Machine Tool Setting and Parameter Optimization

2013 ◽  
Vol 706-708 ◽  
pp. 1132-1135
Author(s):  
Xiu Fen Xu
Keyword(s):  
Machine Tool ◽  
Optimization Design ◽  
Production Efficiency ◽  
Cutting Parameters ◽  
Economic Benefits ◽  
Parameters Optimization ◽  
Machining Process ◽  
Feed Speed ◽  
Processing Efficiency ◽  
Nc Milling

To solve the existing problems in the NC machining process, the optimization design of cutting parameters in NC milling machine with genetic algorithm. With the maximum production efficiency as the optimization objective, the spindle speed, feed speed, milling width, depth and other parameters as optimal variables, establishes the optimization mathematical model of machine tool. The optimization results show that: parameters optimization can significantly improve the processing efficiency, and bring economic benefits for enterprises

The Research of Manufacturing Technique about Intertwined Stator Core in Automotive Alternator

2014 ◽  
Vol 1037 ◽  
pp. 87-90
Author(s):  
Hong Zhe Sun ◽  
Wei Min Li ◽  
Dian Wen Ma ◽  
Jian Sun
Keyword(s):  
Cost Reduction ◽  
Production Efficiency ◽  
Economic Benefits ◽  
New Method ◽  
Stator Core ◽  
Strip Steel ◽  
Productive Process ◽  
Key Steps ◽  
Automotive Alternator ◽  
Generator Stator

Intertwined automobile generator stator core is made from twisted Strip steel with teeth. This winding process is different from the method of traditional laminated machining. Intertwined technique is a new method that for the manufacturing of stator cores in automotive alternators. The productive process include such key steps: Leveling of the bar-typed materials, stamping, enwinding, soldering and plastic. This methods has raised the production efficiency and used ratio of the materials, and even make a cost reduction compared with the traditional ways of strap-typed stator core manufacturing. They are able to make a substitution to the imported products by most automotive alternator enterprises as well as complete the blanks of domestic market and have a large extent of social and economic benefits.

The Improvement for the Structure of the Coil Transporters and its FEA

2014 ◽  
Vol 989-994 ◽  
pp. 2935-2938
Author(s):  
Qi Wang ◽  
Yan Sun ◽  
Zhe Li ◽  
Xuan Qian Peng ◽  
Bing Han
Keyword(s):  
Production Line ◽  
General Property ◽  
Production Efficiency ◽  
Good Condition ◽  
Economic Benefits ◽  
Parking Space ◽  
Working Process ◽  
Rolling Production ◽  
Production Requirement ◽  
Strength And Stiffness

Coil transporters are widely used in rolling production line to transport coils among different positions. Aiming at the inaccurate parking space, low production efficiency, high requirement of working accuracy, inconveniency in repair and other problems during the working process, the running mechanism and lifting gear of the coil transporter have been improved, And the author analyze the structure of the improved body by FEA. The results of the analysis of car body show that strength and stiffness meet the requirements. The general property of the improved coil transporter has been, in a good condition, effectively bettered. It can meet the production requirement and enhance the economic benefits.

scholarly journals Performance Analysis of Target Information Recognition System for Agricultural Robots

2021 ◽  
Vol 12 (2) ◽  
pp. 49-60
Author(s):  
Yun Ji ◽  
Rajeev Kumar ◽  
Daljeet Singh ◽  
Maninder Singh
Keyword(s):  
Decision Making ◽  
Production Efficiency ◽  
Vision System ◽  
Recognition Rate ◽  
Robot Vision ◽  
Recognition System ◽  
Economic Benefits ◽  
Prototype System ◽  
Target Information ◽  
Information Recognition

In this paper, an agricultural robot vision system is proposed for two typical environments—farmland and orchard—combined with weeding between crops. The system includes orchard production monitoring and prediction tasks, the target information recognition approach, and visual servo decision making. The results obtained from the proposed system show that using the region combination features of image 2D histogram as the decision-making basis, the accurate and rapid indirect identification and positioning of crop seedlings can be accomplished while skipping the complex process of accurately identifying crops and weeds. The algorithm performs reasonably good as the time of target recognition in the prototype system is found to be less than 16 ms, and the average accurate recognition rate of 97.43% is achieved. The benefits of the proposed system are the continuous improvement of the quality of agricultural products, the rise of production efficiency, and the increase of economic benefits.

Sign in / Sign up

Export Citation Format

Share Document