A systematic method is developed to studY the classical motion of a mass point in gravitational gauge field. First, by using Mathematica, a spherical symmetric solution of the field equation of gravitational gauge fie...A systematic method is developed to studY the classical motion of a mass point in gravitational gauge field. First, by using Mathematica, a spherical symmetric solution of the field equation of gravitational gauge field is obtained, which is just the traditional Schwarzschild solution. Combining the principle of gauge covariance and Newton＇s second law of motion, the equation of motion of a mass point in gravitational field is deduced. Based on the spherical symmetric solution of the field equation and the equation of motion of a mass point in gravitational field, we can discuss classical tests of gauge theory of gravity, including the deflection of light by the sun, the precession of the perihelia of the orbits of the inner planets and the time delay of radar echoes passing the sun. It is found that the theoretical predictions of these classical tests given by gauge theory of gravity are completely the same as those given by general relativity.展开更多
目的:汉化冠心病患者运动恐惧量表(Fear of Activity in Patients with Coronary Artery Disease,Fact-CAD),为国内冠心病患者运动恐惧的评估提供科学、可靠的特异性工具。方法:遵循Brislin翻译模型对量表进行翻译、回译和文化调适,形...目的:汉化冠心病患者运动恐惧量表(Fear of Activity in Patients with Coronary Artery Disease,Fact-CAD),为国内冠心病患者运动恐惧的评估提供科学、可靠的特异性工具。方法:遵循Brislin翻译模型对量表进行翻译、回译和文化调适,形成中文版Fact-CAD量表。于2022年10月至2023年2月,采用便利抽样法,选取杭州市某三级甲等医院的334例冠心病患者进行调查,结合Rasch模型分析和经典测量理论对问卷的信度、效度进行评价。结果:中文版Fact-CAD为单维度,包括19个条目。各条目的未加权均方拟合统计量值为0.72~2.10,加权均方拟合统计量为0.88~1.29,条目-总分的相关系数为0.04~0.58,各条目拟合结果符合Rasch模型。以中文版多维度运动自我效能量表作为聚合效度指标,相关系数为-0.636(P<0.01),量表平均内容效度指数为0.951。总量表的Cronbach’sα系数为0.901,Guttman折半信度为0.885,重测信度为0.893。结论:中文版Fact-CAD具有良好的信度、效度,量表条目少,评估时间短,难度适中,适用于我国冠心病患者运动恐惧的评估。展开更多
文摘A systematic method is developed to studY the classical motion of a mass point in gravitational gauge field. First, by using Mathematica, a spherical symmetric solution of the field equation of gravitational gauge field is obtained, which is just the traditional Schwarzschild solution. Combining the principle of gauge covariance and Newton＇s second law of motion, the equation of motion of a mass point in gravitational field is deduced. Based on the spherical symmetric solution of the field equation and the equation of motion of a mass point in gravitational field, we can discuss classical tests of gauge theory of gravity, including the deflection of light by the sun, the precession of the perihelia of the orbits of the inner planets and the time delay of radar echoes passing the sun. It is found that the theoretical predictions of these classical tests given by gauge theory of gravity are completely the same as those given by general relativity.
文摘目的:汉化冠心病患者运动恐惧量表(Fear of Activity in Patients with Coronary Artery Disease,Fact-CAD),为国内冠心病患者运动恐惧的评估提供科学、可靠的特异性工具。方法:遵循Brislin翻译模型对量表进行翻译、回译和文化调适,形成中文版Fact-CAD量表。于2022年10月至2023年2月,采用便利抽样法,选取杭州市某三级甲等医院的334例冠心病患者进行调查,结合Rasch模型分析和经典测量理论对问卷的信度、效度进行评价。结果:中文版Fact-CAD为单维度,包括19个条目。各条目的未加权均方拟合统计量值为0.72~2.10,加权均方拟合统计量为0.88~1.29,条目-总分的相关系数为0.04~0.58,各条目拟合结果符合Rasch模型。以中文版多维度运动自我效能量表作为聚合效度指标,相关系数为-0.636(P<0.01),量表平均内容效度指数为0.951。总量表的Cronbach’sα系数为0.901,Guttman折半信度为0.885,重测信度为0.893。结论:中文版Fact-CAD具有良好的信度、效度,量表条目少,评估时间短,难度适中,适用于我国冠心病患者运动恐惧的评估。
