Background: Low levels of ambiguity tolerance and distress tolerance observed in people with hemophilia lead to decreasing their function and quality of life. How positive thinking training program affects tolerance o...Background: Low levels of ambiguity tolerance and distress tolerance observed in people with hemophilia lead to decreasing their function and quality of life. How positive thinking training program affects tolerance of ambiguity and distress is not completely understood. Accordingly, the purpose of this study was to explain the role of positive thinking training in men with hemophilia of Lorestan province and examine its effectiveness on ambiguity tolerance and distress tolerance. Method: The statistical population of this study included 129 patients with hemophilia who were a member of Hemophilia Association of Lorestan province. Thirty (30) patients who were randomly selected were randomly assigned to the experimental group (N = 15) and the control group (N = 15). The design of present study was an experimental design with the pre- and post-test that the experimental group received a positive thinking training. Eight techniques that were adapted from Seligman’s techniques were used to teach positive thinking. These techniques were held in 8-two hours sessions (two sessions per week). The instrument of this study included Simons and Gaher’s distress tolerance scale and McLean and David’s ambiguity tolerance questionnaire. The collected data were analyzed by the analysis of covariance. Results: The results of this study showed that there was a significant difference between scores of post-test and follow-up of two variables in two groups. Conclusion: The amount of ambiguity tolerance and distress tolerance increased in the experimental group in comparison with control group.展开更多
DC motors are widely used in industry such as mechanics, robotics, and aerospace engineering. In this paper, we present a high performance control method for position control of DC motors. Fault-tolerant control model...DC motors are widely used in industry such as mechanics, robotics, and aerospace engineering. In this paper, we present a high performance control method for position control of DC motors. Fault-tolerant control model are also addressed to combine with neuro-robust control approach. It is shown that with the proposed control algorithms, external disturbances and coupled dynamics inherent in the system are effectively compensated using neural network unit in which no analytical estimation on the upper bound of the reconstruction error and uncertainties is needed. Simulations on various flight conditions also confirm the effectiveness of the proposed methods.展开更多
Based on GB/T1184-1996, four form-position tolerance tables are listed on the appendix B. The regularity of distribution for form-position tolerances is deliberately analyzed. This paper describes a formulated method ...Based on GB/T1184-1996, four form-position tolerance tables are listed on the appendix B. The regularity of distribution for form-position tolerances is deliberately analyzed. This paper describes a formulated method for identifying the precision grade, deduces the functional relation formulae between the tolerance and its precision grade, and further confirms the automatic judgement method presented by a practical program on PC computed展开更多
Absolute measurement has consistently been the primary focus in the development of precision linear and angular displace-ment measurements.The scheme design of binary zero position codes is an important factor for abs...Absolute measurement has consistently been the primary focus in the development of precision linear and angular displace-ment measurements.The scheme design of binary zero position codes is an important factor for absolute measurement.Designing and optimizing high-bit zero position codes with over 100 bits face considerable challenges.Simultaneously,the working parameters of zero position codes[unit code width(b),distance(d),and yaw angle(α)]remarkably affect their post-installation performance,particularly in absolute positioning and limit code application in multi-degree-of-freedom measurement schemes.This study addresses these challenges by proposing a design method for zero position codes that considers diffraction based on generative adversarial networks and aims to explore a design with increased efficiency and accuracy as well as optimization for high-bit zero position codes.Additionally,the tolerance range of zero positioning per-formance for each working parameter is examined.By leveraging the adversarial network structure,this study generates the optimization of a 150-bit code and processes the tests of the zero position code by using simulation results.The following working parameter ranges for code design are recommended on the basis of theoretical and experimental results:b greater than 10μm,d andαwithin 1000μm and 3490μrad,and avoidance of intervals with sharp changes in the full width at half maximum.The proposed code design and parameter optimization lay a solid foundation for research and engineering appli-cations in absolute measurement field and have considerable potential for generalization and wide applicability.展开更多
文摘Background: Low levels of ambiguity tolerance and distress tolerance observed in people with hemophilia lead to decreasing their function and quality of life. How positive thinking training program affects tolerance of ambiguity and distress is not completely understood. Accordingly, the purpose of this study was to explain the role of positive thinking training in men with hemophilia of Lorestan province and examine its effectiveness on ambiguity tolerance and distress tolerance. Method: The statistical population of this study included 129 patients with hemophilia who were a member of Hemophilia Association of Lorestan province. Thirty (30) patients who were randomly selected were randomly assigned to the experimental group (N = 15) and the control group (N = 15). The design of present study was an experimental design with the pre- and post-test that the experimental group received a positive thinking training. Eight techniques that were adapted from Seligman’s techniques were used to teach positive thinking. These techniques were held in 8-two hours sessions (two sessions per week). The instrument of this study included Simons and Gaher’s distress tolerance scale and McLean and David’s ambiguity tolerance questionnaire. The collected data were analyzed by the analysis of covariance. Results: The results of this study showed that there was a significant difference between scores of post-test and follow-up of two variables in two groups. Conclusion: The amount of ambiguity tolerance and distress tolerance increased in the experimental group in comparison with control group.
文摘DC motors are widely used in industry such as mechanics, robotics, and aerospace engineering. In this paper, we present a high performance control method for position control of DC motors. Fault-tolerant control model are also addressed to combine with neuro-robust control approach. It is shown that with the proposed control algorithms, external disturbances and coupled dynamics inherent in the system are effectively compensated using neural network unit in which no analytical estimation on the upper bound of the reconstruction error and uncertainties is needed. Simulations on various flight conditions also confirm the effectiveness of the proposed methods.
文摘Based on GB/T1184-1996, four form-position tolerance tables are listed on the appendix B. The regularity of distribution for form-position tolerances is deliberately analyzed. This paper describes a formulated method for identifying the precision grade, deduces the functional relation formulae between the tolerance and its precision grade, and further confirms the automatic judgement method presented by a practical program on PC computed
基金supported by the National Natural Science Foundation of China with No.62275142the Basic and Applied Basic Research Foundation of Guangdong Province with No.2021B1515120007.
文摘Absolute measurement has consistently been the primary focus in the development of precision linear and angular displace-ment measurements.The scheme design of binary zero position codes is an important factor for absolute measurement.Designing and optimizing high-bit zero position codes with over 100 bits face considerable challenges.Simultaneously,the working parameters of zero position codes[unit code width(b),distance(d),and yaw angle(α)]remarkably affect their post-installation performance,particularly in absolute positioning and limit code application in multi-degree-of-freedom measurement schemes.This study addresses these challenges by proposing a design method for zero position codes that considers diffraction based on generative adversarial networks and aims to explore a design with increased efficiency and accuracy as well as optimization for high-bit zero position codes.Additionally,the tolerance range of zero positioning per-formance for each working parameter is examined.By leveraging the adversarial network structure,this study generates the optimization of a 150-bit code and processes the tests of the zero position code by using simulation results.The following working parameter ranges for code design are recommended on the basis of theoretical and experimental results:b greater than 10μm,d andαwithin 1000μm and 3490μrad,and avoidance of intervals with sharp changes in the full width at half maximum.The proposed code design and parameter optimization lay a solid foundation for research and engineering appli-cations in absolute measurement field and have considerable potential for generalization and wide applicability.
