Using the data of ECMWF (European Center for Medium-range Weather Forecasts) to undertake composite diagnoses of 16 explosive cyclones occurring at the Atlantic and the Pacific Oceans,it is found that there are a lot of obvious discrepancies on the basic fields between these strong and weak explosive cyclones.The major reasons why the explosive cyclones over the Atlantic are stronger than those over the Pacific Ocean are that the non-zonal upper jet and the low-level warm moist flow over the Atlantic are stronger.The non-zonal upper jet offers stronger divergence,baroclinicity and baroclinic instability fields for explosive cyclones.Anticyclonic curvature at the high level of strong explosive cyclones is easy to make the inertia-gravitational wave developing at the moment of northward transfer of energy and stimulate the cyclones deepening quickly.Warm advection and diabatic heating can cause the upper isobaric surface lifting,as a result,the anticyclone curvature of cyclones enlarges,and wave energy develops easily as well.The most powerful period of the development of explosive cyclones is just the time when the positive vorticity advection center is located over the low vortex.At the upper level,when the distribution of potential vorticity contours changes suddenly from rareness to denseness,and the large values of the potential vorticity both in the west and north sides of cyclones extend downwards together,then cyclones are easy to explosively develop.The formation of strong explosive cyclones is closely related with the non-zonality of upper jet and the anticyclonic curvature.
A research about the psychological health of middle school and primary school students in southeast part of Shandong province was conducted and it revealed that the poor psychological health of the students was closely related with the poor psychological surrounding of school;the psychological health of the students in the urban area was better than that of other areas;the psychological health of the seniors was worse than that of the younger students.
Based on the 41st World Gymnastics Championships and the 11th National Games gymnastics competition live videotaping and the correlation data,this article analyses the women vaulting horse good player two jumped the movement arrangement characteristic and China's superiority and the insufficiency.Discovered: Unifies the 3rd group by the 2nd group of movement(either the 4th group) the movement and uses the 4th group of movement to unify the 5th group(or the 2nd group) the movement,matches separately has high D to divide the value two to jump the movement combination,respectively is,outside the outstanding vaulting horse women contestant matches two jumps the movement main arrangement characteristic;The Chinese vaulting horse movement's type choice relative foreign country has may the expansibility,and the apex contestant two jump the difficulty also to surpass the numerous world top good player,but two jump the movement to complete posture,specification and quality and landing aspects and so on stability,deficient high level competitive power,Beside,at present except Cheng Fei,China haven't got excellent competitor who is possible to contend with international competition's strength contestant.
Through the methods of data,questionnaire,visiting specialists and statistics,it analyzes the gym teachers' situation at middle schools in country town of Shandong province.The results show that their population ratio,educational level and quantity of work are reasonable,but compared with the other teachers,the welfare is obviously lower.
Since Chinese government carried out the open-reform policy,school physical education in China has improved a lot.However,due to the deep influences of foreign cultures,there are some problems existing in Chinese physical education.That is,the guiding ideology and teaching approaches are lacking in its own disinguishing features,and up to now,there is still not a physical education system that applies to the national condition of China and embodies Chinese distinguishing features.Based on that,this paper tries to absorb the cultural marrows of Confucian school such as harmony and humanity and use these marrows to guide and construct the theoretical system of Chinese school physical education characterized by national distinguishing feaures.It it is to provide some references for decision makers of Chinese school physical education.
With the research methods of literature study,comparative research and historical analysis and from the perspective of legislative sociology,the paper analyses the interactive relationship between the 29th Olympic Games and the legislative construction in China to provide references for optimizing the relative laws.
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