To explore a new evaluation method for spontaneous combustion tendency of different areas in sulfide ore heap, ore samples from a pyrite mine in China were taken as experimental materials, and the temperature variatio...To explore a new evaluation method for spontaneous combustion tendency of different areas in sulfide ore heap, ore samples from a pyrite mine in China were taken as experimental materials, and the temperature variations of the measuring points of simulated ore heap were measured. Combined with wavelet transform and nonlinear parameters extraction, a new method for spontaneous combustion tendency of different areas in sulfide ore heap based on nonlinear parameters was proposed and its reliability was verified by field test. The results indicate that temperature field evolution of the simulated ore heap presents significant spatial difference during self-heating process. Area with the maximum increasing extent of temperature in sulfide ore heap changes notably with the proceeding of self-heating reaction. Self-heating of sulfide ore heap is a chaotic evolution process, which means that it is feasible to evaluate spontaneous combustion tendency of different areas by nonlinear analysis method. There is a relatively strong correlation between the maximum Lyapunov exponent and spontaneous combustion tendency with the correlation coefficient of 0.9792. Furthermore, the sort of the maximum Lyapunov exponent is consistent with that of spontaneous combustion tendency. Therefore, spontaneous combustion tendency of different areas in sulfide ore heap can be evaluated by means of the maximum Lyapunov exponent method.展开更多
The originating of this study is to examine the empathic tendency of academicians. Having empathic tendency means it is easy to understand the feelings of the others and keeping up with the rapidly globalizing world. ...The originating of this study is to examine the empathic tendency of academicians. Having empathic tendency means it is easy to understand the feelings of the others and keeping up with the rapidly globalizing world. The research consists of screening model. The Scale of Empathic Tendency （SET）, developed by DSkmen, was used as the data collection tool in this case study. In spite of not being taught, it is true that the education, cultural surroundings play a big role for the self development. Due to the relationship between impulse and response, interpersonal relations functions as multiple dimensions, one of which leads to empathic tendency. This study aims to make a survey on lecturers since they are the ones who play an important role for the pupils to be more successful in their future career. Total field under survey is 70 lecturers： Half of them are working at State and the other half at Private Universities in Istanbul, in Turkey. In spite of not observing big statistical differences between the two group Universities, according to Mann Whitney ＂U＂ test, it is so clear that having empathic tendency as lecturers affects classroom communication as the most important factor.This is the reason for the achievement of the students in their major. Furthermore, it gives an opportunity to get through the perception view of the others. This can give the perspective view of problem solving skills.展开更多
Considering the deficiency of using vague language in predicting monthly seismic tendency, we propose a numerical predicting method in the paper, which may be more applicable to the society. The method is based on the...Considering the deficiency of using vague language in predicting monthly seismic tendency, we propose a numerical predicting method in the paper, which may be more applicable to the society. The method is based on the self-rhythm phenomenon of earthquake activities, which calculates monthly seismic tendency through nonlinear mathematical model. The result of modeling test shows that there exists a kind of seismic cyclic process of every 7 to 8 months in Chinese mainland, and the average error from comparing monthly predicted and observed earthquake magnitudes is below 0.2. Thus the method is more applicable to the society than the experiential prediction.展开更多
目的探讨视听障碍(audio-visual impairments)对主观幸福感(subjective well-being,SWB)的影响,以及抑郁倾向是否中介了视听障碍与主观幸福感之间的关联。方法中国健康与退休纵向调查(The China Health and Retirement Longitudinal Sur...目的探讨视听障碍(audio-visual impairments)对主观幸福感(subjective well-being,SWB)的影响,以及抑郁倾向是否中介了视听障碍与主观幸福感之间的关联。方法中国健康与退休纵向调查(The China Health and Retirement Longitudinal Survey,CHARLS)对45岁及以上的中老年人进行问卷调查,在全国30个省级行政单位中采用多阶段抽样,分别在县(区)-村(居)-家户-个人层面上进行抽样,并在县(区)-村(居)两级抽样中,采用按人口规模成比例的概率(proportional probability sampling,PPS)抽样,最终纳入了28个省份150个县(区)的450个村/社区。本研究基于2018年的CHARLS数据展开研究,纳入标准为:(1)年龄≥60岁;(2)有完整的自我报告的视力和听力状况;(3)至少含有生活满意度、主观期望寿命、自评健康状况3项主观幸福感指标中的一个。CHARLS使用Likert五分量表测定老年人的主观幸福感,使用10项流调中心抑郁自评量表(the Center for Epidemiology Studies Depression Scale-10,CESD-10)测定老年人的抑郁倾向。本研究采用多元回归分析视听障碍与抑郁倾向、主观幸福感之间的关联,并通过中介模型分析抑郁倾向的中介作用。双侧P值<0.05被认为有统计学意义。结果最终纳入符合标准的研究对象7620人。其中有视听障碍的患者抑郁倾向水平明显更高,主观幸福感的三项指标均较低(P值均小于0.05)。视觉障碍、听觉障碍和视听双重障碍与更高的抑郁倾向水平和更低的自评健康、主观期望寿命有关;视觉障碍和视听双重障碍与较低的生活满意度有关。抑郁倾向在视听双重障碍与生活满意度间及视觉障碍、听觉障碍、视听双重障碍与自评健康和主观期望寿命间起部分中介作用。结论在中国老年人群中,视听障碍与较低的主观幸福感状态有关,抑郁倾向在其中起着中介作用。展开更多
基金Projects(51304238,51534008)supported by the National Natural Science Foundation of ChinaProject(2015CX005)supported by Innovation Driven Plan of Central South University,China
文摘To explore a new evaluation method for spontaneous combustion tendency of different areas in sulfide ore heap, ore samples from a pyrite mine in China were taken as experimental materials, and the temperature variations of the measuring points of simulated ore heap were measured. Combined with wavelet transform and nonlinear parameters extraction, a new method for spontaneous combustion tendency of different areas in sulfide ore heap based on nonlinear parameters was proposed and its reliability was verified by field test. The results indicate that temperature field evolution of the simulated ore heap presents significant spatial difference during self-heating process. Area with the maximum increasing extent of temperature in sulfide ore heap changes notably with the proceeding of self-heating reaction. Self-heating of sulfide ore heap is a chaotic evolution process, which means that it is feasible to evaluate spontaneous combustion tendency of different areas by nonlinear analysis method. There is a relatively strong correlation between the maximum Lyapunov exponent and spontaneous combustion tendency with the correlation coefficient of 0.9792. Furthermore, the sort of the maximum Lyapunov exponent is consistent with that of spontaneous combustion tendency. Therefore, spontaneous combustion tendency of different areas in sulfide ore heap can be evaluated by means of the maximum Lyapunov exponent method.
文摘The originating of this study is to examine the empathic tendency of academicians. Having empathic tendency means it is easy to understand the feelings of the others and keeping up with the rapidly globalizing world. The research consists of screening model. The Scale of Empathic Tendency （SET）, developed by DSkmen, was used as the data collection tool in this case study. In spite of not being taught, it is true that the education, cultural surroundings play a big role for the self development. Due to the relationship between impulse and response, interpersonal relations functions as multiple dimensions, one of which leads to empathic tendency. This study aims to make a survey on lecturers since they are the ones who play an important role for the pupils to be more successful in their future career. Total field under survey is 70 lecturers： Half of them are working at State and the other half at Private Universities in Istanbul, in Turkey. In spite of not observing big statistical differences between the two group Universities, according to Mann Whitney ＂U＂ test, it is so clear that having empathic tendency as lecturers affects classroom communication as the most important factor.This is the reason for the achievement of the students in their major. Furthermore, it gives an opportunity to get through the perception view of the others. This can give the perspective view of problem solving skills.
基金National Natural Science Foundation of China (10373017).
文摘Considering the deficiency of using vague language in predicting monthly seismic tendency, we propose a numerical predicting method in the paper, which may be more applicable to the society. The method is based on the self-rhythm phenomenon of earthquake activities, which calculates monthly seismic tendency through nonlinear mathematical model. The result of modeling test shows that there exists a kind of seismic cyclic process of every 7 to 8 months in Chinese mainland, and the average error from comparing monthly predicted and observed earthquake magnitudes is below 0.2. Thus the method is more applicable to the society than the experiential prediction.
文摘目的探讨视听障碍(audio-visual impairments)对主观幸福感(subjective well-being,SWB)的影响,以及抑郁倾向是否中介了视听障碍与主观幸福感之间的关联。方法中国健康与退休纵向调查(The China Health and Retirement Longitudinal Survey,CHARLS)对45岁及以上的中老年人进行问卷调查,在全国30个省级行政单位中采用多阶段抽样,分别在县(区)-村(居)-家户-个人层面上进行抽样,并在县(区)-村(居)两级抽样中,采用按人口规模成比例的概率(proportional probability sampling,PPS)抽样,最终纳入了28个省份150个县(区)的450个村/社区。本研究基于2018年的CHARLS数据展开研究,纳入标准为:(1)年龄≥60岁;(2)有完整的自我报告的视力和听力状况;(3)至少含有生活满意度、主观期望寿命、自评健康状况3项主观幸福感指标中的一个。CHARLS使用Likert五分量表测定老年人的主观幸福感,使用10项流调中心抑郁自评量表(the Center for Epidemiology Studies Depression Scale-10,CESD-10)测定老年人的抑郁倾向。本研究采用多元回归分析视听障碍与抑郁倾向、主观幸福感之间的关联,并通过中介模型分析抑郁倾向的中介作用。双侧P值<0.05被认为有统计学意义。结果最终纳入符合标准的研究对象7620人。其中有视听障碍的患者抑郁倾向水平明显更高,主观幸福感的三项指标均较低(P值均小于0.05)。视觉障碍、听觉障碍和视听双重障碍与更高的抑郁倾向水平和更低的自评健康、主观期望寿命有关;视觉障碍和视听双重障碍与较低的生活满意度有关。抑郁倾向在视听双重障碍与生活满意度间及视觉障碍、听觉障碍、视听双重障碍与自评健康和主观期望寿命间起部分中介作用。结论在中国老年人群中,视听障碍与较低的主观幸福感状态有关,抑郁倾向在其中起着中介作用。
