scholarly journals A dynamic analysis of output, energy consumption, and CO2emissions in Malaysia

2016 ◽  
Vol 11 (5) ◽  
pp. 450-457 ◽  
Author(s):  
Mansor H. Ibrahim ◽  
Muzafar Shah Habibullah
Agriculture ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 517
Author(s):  
Ali Mostafaeipour ◽  
Mohammad Bagher Fakhrzad ◽  
Sajad Gharaat ◽  
Mehdi Jahangiri ◽  
Joshuva Arockia Dhanraj ◽  
...  

The global population growth has led to a considerable rise in demand for wheat. Today, the amount of energy consumption in agriculture has also increased due to the need for sufficient food for the growing population. Thus, agricultural policymakers in most countries rely on prediction models to influence food security policies. This research aims to predict and reduce the amount of energy consumption in wheat production. Data were collected from the farms of Estahban city in Fars province of Iran by the Jihad Agricultural Department’s experts for 20 years from 1994 to 2013. In this study, a novel prediction method based on consumed energy in the production period is proposed. The model is developed based on artificial intelligence to forecast the output energy in wheat production and uses extreme learning machine (ELM) and support vector regression (SVR). In the experimental stage, the value of elevation metrics for the EVM and ELM was reported to be equal to 0.000000409 and 0.9531, respectively. Total input energy (consumed) is found to be 1,460,503.1 Mega Joules (MJ), and output energy (produced wheat) is 1,401,011.945 MJ for the Estahban. The result indicates the superiority of the ELM model to enhance the decisions of the agricultural policymakers.


Author(s):  
I Okorn ◽  
M Fajdiga ◽  
M Nagode

To determine the life of air springs, a new test rig enabling dynamic sinusoidal loading of air springs has been developed. The test rig enables the adjustment of air spring deformation and load frequency, as well as the adjustment of its geometry to different sizes of air springs. Four air springs are tested simultaneously. Between the phases of loading the air spring some time delay occurs, which is why the work that the air spring returns into the drive system during its unloading is consumed as well. The concept of the test rig and the possibilities of adjustments are presented. In order to carry out a dynamic analysis of the drive and determine the load on test rig elements, a computer program has been developed that enables the calculation of the forces, torques, and power of the driving motor for different sizes of air springs and various testing conditions. The algorithms that the program is based on and the characteristic results of the calculations are presented. Also, a comparison of energy consumption for the test of one, two, and four air springs is shown. The advantages of the new test rig as compared to other test rigs are discussed, too.


2019 ◽  
Vol 18 (3) ◽  
pp. 209
Author(s):  
Zhen Wang ◽  
Presley K. Wesseh <suffix>Junior</suffix> ◽  
Abimelech Paye Gbatu ◽  
Vamuyan A. Sesay

2014 ◽  
Vol 38 ◽  
pp. 426-434 ◽  
Author(s):  
Sahbi Farhani ◽  
Anissa Chaibi ◽  
Christophe Rault

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