豫北地区高校教师体育健身活动的现状与对策

采用问卷调查等方法,对豫北地区14所高等院校的教师进行了体育健身活动现状的调查.结果显示,豫北地区高校教师参与体育锻炼的热情较高,但是缺乏对国家体育政策的了解,“体育人口”的比例低于全国平均水平,体育消费状况处于全国中等水平.同时,对调查结果进行了分析,并提出了合理化对策.     

Practicality, Positionality, and Emancipation: Reflections on Participatory Action Research with a Watershed Partnership

In the last few decades, there has been a trend towards increased stakeholder and public participation in natural resource management in North America. To a certain extent, the rationale for this trend is found in the complexity and uncertainty of environmental issues, which confront us with the coexistance of multiple legitimate values and perspectives in society. Recognizing this “epistemological plurality” has important implications for both policy and science. In this paper, I critically reflect on my experiences as a doctoral student engaged in participatory action research (PAR) with a watershed partnership in Ontario, Canada. In providing this biographical account, I seek to make a contribution to ongoing discussions regarding the nature, challenges and benefits of this methodological approach for academic research, as well as to emerging debates on PAR in the context of environmental governance and “post-normal” approaches to natural resource management.

朝鲜巨文岛事件与清政府的对策

在1885年到1887年的英国入侵朝鲜巨文岛事件中,清政府采取了一系列应对举措,实质性地加强了中国宗主权,为全面干涉朝鲜内政外交拉开了序幕。     

郑和的和平之旅与中国的和平崛起

郑和下西洋是明代强盛国力之展现.郑和之旅是和平之旅.而和平之旅的文化源头就是中国的"和".改革开放以来,中国崛起于世界民族之林.正是这一"和"文化昭示着中国的发展必然是和平崛起.     

南北朝史二题

（一） 北齐轻视淮南，是因为淮南对北齐的战备意义已经失去。旧说只以“备周“即防备北周的进攻来解释北齐轻视淮南的原因，于北齐经略淮南的目的这个大背景有所忽略。（二）陈后主昏庸，是陈宣帝北伐失败后陈朝政权呈现颓丧之气的表现。     

New paleomagnetic results from the Yangzhuang Formation of the Jixian System,North China,and tectonic implications

A paleomagnetic study was carried out on the Yangzhuang Formation （-1350 Ma） of the Jixian System in the North China Block （NCB）. Detailed stepwise thermal demagnetization isolated two components. The soft component （component A） was interpreted as a remagnetization in the recent geomagnetic field. The hard component （component B） with higher unblocking-temperatures was carried by hematite. Its site-mean direction is D/I = 77.6°/-24.3°κ= 5.4, α 95 = 18.3°, N = 15 sites） before, and D/I = 72.2°/11.5° （ κ=24.6, α95 = 7.9°） after tilt correction. It passes a fold test（Mesozoic folding） at 99% confidence level and reversal test at 95% confidence level. The corresponding pole locates at 17.3°N, 214.5°E （dp = 4.1°, dm= 8.0°）. A best fit of paleomagnetic poles from the NCB, Baltica, Siberia and the apparent polar wander path for Laurentia suggests a long-lived connection between these paleo-continents between -1800and 1350 Ma.     

东亚和西太平洋地区Hadley环流对对流层臭氧分布的影响

 采用了后向轨迹方法,利用臭氧混合比ρ₃和风场资料,来探讨东亚和西太平洋地区上空Hadley 环流对对流层臭氧分布的影响,文中对所研究关键点上7月份对流层高、中、低三层的轨迹进行分向统计后,计算方向概率与ρ₃的相关系数,得出了东亚和西太平洋地区Hadley 环流水平平流作用对臭氧分布的影响.结果表明:①青藏高原地区上空对流层低层Hadley 环流水平平流作用将会使臭氧混合比减少,而对应的高层南半球Hadley环流下沉支,其总体效果则是使臭氧增加;②在西太平洋地区上空对流层低层,北半球Hadley环流上升支其作用是使臭氧混合比减少,对应的高层南半球Hadley环流下沉支,其影响较弱;③另外,东亚季风的水平平流作用似乎和臭氧的分布也有联系,这还有待于进一步研究.     

ENSO循环与行星位置的相互关系(Ⅰ):木星、土星视赤纬与赤道东太平洋海温的联系

 利用通用天文软件SKYMap Pro Version 8计算了木星和土星的月视赤纬,将其与ENSO循环及赤道太平洋关键区海温距平进行对比分析,发现两者存在明显联系,主要包括:木星视赤纬由正经过赤道变为负时,容易发生EL-Nino事件,而且事件持续时间较长,1980年代及以前发生过3次这样的情况都对应持续较长的EL-Nino事件,1980年代以后的2次EL-Nino事件群发期,其中心都发生在木星视赤纬从正向负转化期间.EL-Nino易发生在木星视赤纬的正极值和赤道附近,而负极值附近很少发生.LA-Nnia事件在1980年代及以前发生在木星视赤纬极值和赤道之间的中间视赤纬区域内,但1980年代以后,则容易发生在木星视赤纬负极值附近.一些EL-Nino事件发生年的木星视赤纬位置近乎在1条直线上,过去60年中有4条这样的直线,将EL-Nino事件分成4个组,每个组内都准确地由4个事件组成.当土星视赤纬靠近或离开赤道时(大概在±5°~10°),都会有EL-Nino发生,但在赤道区域却几乎不发生EL-Nino事件.     

ENSO循环与行星位置的相互关系Ⅱ:行星视赤经与赤道东太平洋海温的联系

 利用通用天文软件SKYMap Pro Version 8提供的大行星冲日资料和计算得到的各大行星视赤经资料,分析了行星相对位置与ENSO之间的相互关系,结果发现两者之间存在明显联系,主要有:三大行星(火、木、土)在3月冲日,有利于在当年发生EL-Nino事件,且火星和木星对应的事件持续时间都较长,特别是木星3月冲日与1990s以后的2次EL-Nino群发期有很好的对应,与土星对应的事件持续较短.火星和木星在8月冲日有利于次年发生EL-Nino现象,土星则不明显.火星和木星在9月冲日容易在当年发生LA-Nina现象,而土星在9月冲日的头一年易发生EL-Nino,次年易发生LA-Nina.对行星的视赤经与赤道太平洋海温关键区之间相互关联的非偶然性检验表明,只有木星和土星存在相关区.木星视赤经相对于Nino 4海温距平大于0的概率呈现偏心结构,并存在2个奇对称区域;土星的对应区相对比较均匀,存在3个偶对称区域,且彼此相差60°,在空间上构成六角型结构.     

Petrogenesis of Aoyougou high-silica adakite in the North Qilian orogen, NW China: Evidence for decompression melting of oceanic slab

A trondhjemitic body occurs in the Aoyougou area,the western part of the North Qilian orogen.It is geochemically characterized by high SiO 2,Na 2 O (high Na/K),elevated Sr/Y and (La/Yb) N,positive Sr anomaly,relatively enriched large ion lithophile elements (LILEs) and light rare earth elements (LREEs),and depleted Nb,Ta,Ti,resembling the high-silica adakite.Zircon U-Pb SHRIMP dating yields a weighted mean age of 438±3 Ma.This age is significantly younger than eclogitization ages of 460-490 Ma in the North Qilian orogen,suggesting that formation of the adakite postdates the subduction of oceanic crust in association with closure of the ancient Qilian Ocean.Whole-rock Sr and Nd isotopic analyses give initial ratios of I Sr =0.7044 0.7047 and Nd (t)=3.0 4.1,indicating that they are derived from partial melting of the juvenile oceanic crust.In view of the tectonic evolution of the North Qilian orogen,the high-silica adakite was probably derived from decompression melting of the exhumed eclogite at the depth of ～60 km.