scholarly journals International Scholars' Views on the Language Reinforcement Program

2020 ◽  
Vol 15 (2) ◽  
pp. 386-405
Author(s):  
Yusuf Avcı ◽  
◽  
Gamze Çelik ◽  
Ayşe Dağ Pestil ◽  
◽  
...  
1975 ◽  
Vol 39 (12) ◽  
pp. 782-785
Author(s):  
T Aranda ◽  
JL Henry

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Jia Nan ◽  
Cheng Liu ◽  
Yi Liu

To reveal the mechanical behavior mechanism of collapse and to control risks effectively, the instability extent of the collapse area was established through theoretical mechanics and numerical methods, taking one metal mine as a case study; on this basis, a routine reinforcement program was determined, and the effect of the program was evaluated. The results show the following. (1) Analytical formulas of the critical slip angle and the collapse height of the ore body were derived by the mechanics method, and the rock mechanics parameters were obtained by field coring and physical and mechanical experiments. The slipping line angle increases along with uniform force Q and is inversely proportional to the bending stiffness. Meanwhile, the calculation formula for the maximum subsidence of ore body was deduced. (2) Numerical results can be used to determine the basic form of the collapse area, and a “U-shaped” collapse area formed when a plastic area passed completely through, resulting in the overall destruction. (3) The grouting reinforcement program includes “determining the instability region ⟶ roadway temporary support ⟶ improve the water environment and surrounding rock bearing capacity ⟶ mining planning” which were determined on the basis of prediction. (4) The hierarchical structure of the rock body and filling were improved combined with the Delphi method, and the grouting effect evaluation model was constructed and verified using the improved FD-AHP method; the evaluation value indicating that the grouting reinforcement improved the bearing capacity of ore body and filling body in collapse area. The research results provide systematic reference and technical support for the analysis of stope collapse mechanism, prediction of hidden trouble, and the subsequent mining.


Author(s):  
Saqib Fayyaz ◽  
Sabahat Afsheen ◽  
Adeel Khan

A common problem was observed at local level weightlifting clubs in Lahore, Pakistan i.e., coaches use inappropriate ways (shouting and abusing) to get desired performance results but, it ends in young weightlifter’s resentment and take them away from their sport targets and some choose to quit weightlifting sport as well. The existing literature about acquiring desired results in sports suggests; only positive approach can be useful i.e., Positive Reinforcement Theory ‘PRT’ developed by B F Skinner (Marzieh Gordan, 2014). Hence, in this applied deductive type quantitative study, an eight-week experiment was conducted in Lahore which tested the implications of Positive Reinforcement Theory on young weightlifters’ performance. The objectives of this study were; (a) to apply Positive Reinforcement Theory in weightlifting sport to examine the cause-and-effect relationship between positive reinforcement and young weightlifter’s performance, (b) to test if the study’s Positive Reinforcement Program ‘PRP’ model helps young weightlifters to achieve desired targets within given timeframe or not? At first, pre-competition was administered to record standard performance results of both groups. Secondly, ‘PRP’ Model based on ‘PRT’ was introduced to experimental group and then post-competition testing was conducted to record and compare performance results of both groups. The results of both groups’ Paired Sample t-test and Independent Sample t-test, using statistical package SPSS version 23, showed a significant impact of ‘PRP’ model on the young weightlifter’s performance. Therefore, it is concluded that; acquisition of young weightlifters’ desired performance results. Coaches should use ‘PRP’ model rather than applying inappropriate ways to motivate young weightlifters. The PRP model also helps young weightlifters to achieve their targeted performance results within given timeframe.


CATENA ◽  
2019 ◽  
Vol 180 ◽  
pp. 346-354
Author(s):  
Chaobo Zhang ◽  
Dongrong Li ◽  
Jing Jiang ◽  
Xia Zhou ◽  
Xiaoyu Niu ◽  
...  

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