100m跨栏跑教学方法的单因素方差分析

通过100m跨栏跑的单元教学,施以不同的教学方法,观察学生完成技术动作的情况。运用单因素方差分析,经SAS软件检验,认为栏间四步技术是普通高校女生100m跨栏跑的合理技术。     

世界优秀女子400m跑速度特征分析

采用动态分析法、数据统计法、因素分析法对第6、7届世界田径锦标赛女子400m决赛运动员的50m分段时间、平均速度进行分析统计。结果表明:为了防止后半程速度的下降,应延长400m跑的加速时间;8个50m分段的标准差越小匀速跑的能力越强,前3名选手都有较强的匀速跑能力;最快和最慢50m分段的时间差与运动成绩显著相关;第1名运动员启动速度较快,第2分段控制速度,在第5、6分段速度优势明显。     

6周HiHiLo训练对女子400m运动员专项能力的影响

目的：随着科学技术的进步,训练学界对400m项目的能量供应比例有了新的认识,对有氧能力在400m项目中的重要性认识有了重新定位。该研究探讨了高住高练低训（HiHiLo）对女子400m运动员专项能力的影响。方法：400m、400m栏、400m接力项目运动员8人,在赛前训练阶段进行6周的HiHiLo,加1周的间歇低氧训练,睡眠高度控制（周变化）为2600m、2800m、3000m、3000m、3000m、2800m,训练高度为2800m、3000m、3200m、3200m、3400m、3000m、2800m。采集训练前、训练第三周、训练第六周60m、100m、300m、350m、2000m成绩,200m×4×2成绩和运动后即刻乳酸值作为评价运动员专项能力指标,将比赛成绩作为最终专项能力指标。结果：运动员专项60m、100m成绩（7.53±0.25s VS 7.20±0.31s,P<0.05;12.37s±0.41s VS 11.98s±0.37s,P<0.05）;运动员300m、350m成绩（41.92s±1.27s VS 39.27s±1.57s,P<0.01、50.7...     

相依样本下参数的经验欧氏似然比统计量

在强平稳的相依样本下讨论半参数模型参数的经验欧氏似然比统计量．     

一切从专项需要出发——谈高中学生800m专项训练方法

800m专项训练需要从步幅与步频的节奏训练、力量训练、身体姿势训练、身体协调性训练等方面进行科学地选择与安排,以减少训练中不必要的浪费。     

“None of the Kings on Earth is Their Equal in ʿaṣabiyya”: The Mongols in Ibn Khaldūn's Works

The rise of the Mongol empire was a shock to the Arab world and led many Arab authors to describe these conquerors in decidedly negative terms. The great historian Ibn Khaldūn also discusses the Mongols' rise and their conquests. As a nomadic people they challenged and defeated sedentary populations and founded their own dynasties. Consequently, the Mongol conquests perfectly fit Ibn Khaldūn's theories on ?a?abiyya – which is superior in nomadic groups – and the rise and fall of dynasties. For the Maghrebi historian, the rise of the Mongols was a natural step in the course of history. This consequently colours his view of the Mongols and affects the way he portrays them, especially regarding the themes of violence and religion – recurring themes in many contemporary works dealing with the Mongols – and in his depiction of the Turco-Mongolian conqueror Timur, who is presented in a more favourable light by Ibn Khaldūn than he is in many contemporary works.     

世界优秀男子400米跑运动员速度特征分析

对第6，7届世界田径锦标赛男子400米决赛选手全程和分段成绩进行分析，揭示当今世界男子400米跑速度特征及发展趋势。研究认为，运动员绝对速度能力、保持高速跑的能力以及匀速跑的节奏，是训练工作中应抓好的主要环节。     

The Seljuk Sultanate of Rūm and the Turkmen of the Byzantine frontier, 1206–1279*

This article examines the frontier between the Seljuk Sultanate of Rūm and its Byzantine neighbours in the thirteenth century, concentrating on the place of these frontier districts within the Seljuk state. Scholarship on the frontier, influenced by the ideas of Paul Wittek, has seen it as something of a “no man's land”, politically, economically, culturally and religiously distinct from the urban heartland of the Seljuk sultanate in central Anatolia, dominated by the nomadic Turks, the Turkmen, who operated largely beyond sultanic control. It is often thought that the Seljuk and Greek sides of the border shared more in common with each other than they did with the states of which they formed a part. In contrast, this article argues that in fact the western frontier regions were closely integrated into the Seljuk sultanate. Furthermore, with the Mongol domination of the Seljuk sultanate in the second half of the thirteenth century, the Seljuk and Mongol elites became increasingly involved in this frontier region, where some of the leading figures of the sultanate had estates and endowments.     

The Byzantines and Saladin: Some Further Arguments

This is the second of two articles by the same author arguing against the thesis that there was a conspiracy between the Byzantine emperors and Saladin, sultan of Egypt and Syria, against the crusader states and the Third Crusade in the 1180s. While the focus of the first article was primarily on the Latin sources, the present study shifts the focus to the Arabic primary material, hitherto largely neglected or inadequately treated by modern historians. Through a critical re-examination and re-interpretation of the Arabic sources, backed by the introduction and discussion of new Latin material when necessary, this article presents expanded arguments on the relations between the Byzantine Empire, the Sultanate of Konya and Saladin in the 1180s. The conclusions lend further support to the view that the Byzantine rulers and Saladin never concluded an alliance against the Latin settlers of Outremer and the Third Crusade.