Sökning: "skis"
Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet skis.
1. Roller skis' rolling resistance and grip characteristics : influences on physiological and performance measures in cross-country skiers
Sammanfattning : The aim of this thesis was to investigate roller ski characteristics; classical and freestyle roller skis’ rolling resistance coefficients (μR) and classical style roller skis’ static friction coefficients (μS), and to study the influence of different μR and μS on cross-country skiers’ performance and both physiological and biomechanical indices. The aim was also to study differences in skiing economy and efficiency between recreational skiers, female and male junior and senior elite cross-country skiers. LÄS MER
2. The rolling resistances of roller skis and their effects on human performance during treadmill roller skiing
Sammanfattning : Modern ski-treadmills allow cross-country skiers, biathletes and ski-orienteers to test their physical performance in a laboratory environment using classical and freestyle techniques on roller skis. For elite athletes the differences in performance between test occasions are quite small, thus emphasising the importance of knowing the roller skis’ rolling resistance coefficient, µR, in order to allow correct comparisons between the results, as well as providing the opportunity to study work economy between different athletes, test occasions and core techniques. LÄS MER
3. Samlingsboplatser? : En diskussion om människors möten i norr 7000 f Kr - Kr f med särskild utgångspunkt i data från Ställverksboplatsen vid Nämforsen
Sammanfattning : This thesis deals with meetings between peoples during prehistoric times in the northern part of Norrland, Sweden. Particular attention is paid to the possible occurrence of more temporary meetings between people in larger groups at aggregation camps during the period ca 7000 – 0 BC. LÄS MER
4. Interfacial kinetic ski friction
Sammanfattning : It is no doubt, that the ski glide over the snow is a very complicated object of research. However, ski glide is just a one area of many other areas of human knowledge. As a rule, the scientists and practitioners, who work in these areas, operate with some publicly expressed more or less solid hypotheses. LÄS MER
5. Properties of snow with applications related to climate change and skiing
Sammanfattning : Snow has been a subject of research since the mid-20th century. Research on mechanical properties of snow started as an off-shoot of soil mechanics, where methods, tools and instruments used often are the same. However, during the last decades the winter business industry has been growing requiring a number of new fields of research. LÄS MER
