The aim of this study was to determine how the performance of the Egyptian high jumpers is depending on the kinematic parameters of a take-off phase. The sample of the study has been selected from competitors of the high jump event - three jumpers representing the Egyptian international athletic team. The researcher has studied the sample using a direct measurement by a synchronized 3D video system to measure the kinematic parameters. The researcher has found a relation between record level and vertical velocity components with improvement in technique and better fitness levels, thus the Egyptian jumpers can achieve further progress in their results. This raises optimism because Omer Samir (A2) is very young and his current record 2.02m gives hope for future World - Class. Key words High jump, kinematic parameters, take-off phase.

The aim of this study was to determine how the performance of the Egyptian high jumpers is depending on the kinematic parameters of a take-off phase. The sample of the study has been selected from competitors of the high jump event - three jumpers representing the Egyptian international athletic team. The researcher has studied the sample using a direct measurement by a synchronized 3D video system to measure the kinematic parameters. The researcher has found a relation between record level and vertical velocity components with improvement in technique and better fitness levels, thus the Egyptian jumpers can achieve further progress in their results. This raises optimism because Omer Samir (A2) is very young and his current record 2.02m gives hope for future World - Class. Key words High jump, kinematic parameters, take-off phase.

We are in an era marked by tremendous global growth in mobile traffic and subscribers due to change in the mobile communication technology from second generation to third and fourth generations. Especially usage of packet-data applications has recorded remarkable growth. The need for mobile communication networks capable of providing an ever increasing spectrum of services calls for efficient techniques for the analysis, monitoring and design of networks. To meet the ever increasing demands of the user and to ensure on reliability and affordability, system models that can capture the characteristics of actual network load and yield acceptable precise predictions of performance in a reasonable amount of time must be developed. This can be achieved using teletraffic models as they capture the behaviour of system through interpret-able functions and parameters. Past years have seen extremely numerous teletraffic models for different purposes. Nevertheless there is no model that provides a proper frame work to analyse the mobile networks. This report attempts to provide a frame work to analyse the mobile traffic and based on the analysis we design teletraffic models that represent the realistic mobile networks and calculate the buffer under-flow probability. / Vi är i en tid präglad av enorm global tillväxt inom mobil trafik och abonnenter på grund av förändringar i den mobila kommunikationsteknikenfrån andra generationen till tredje och fjärde led . Särskilt användningen av paketdataapplikationerhar spelat in en anmärkningsvärd tillväxt . Behovet av mobila kommunikationsnät som kan ge en allt större spektrum av tjänster lyser effektiva metoder för analys , övervakning och utformning av nät . För att möta de ständigt ökande kraven på användaren och för att säkerställa den tillförlitlighet och överkomliga priser , måste systemmodeller som kan fånga egenskaper faktiska belastningen på nätet och ger acceptabla precisa förutsägelser om prestanda i en rimlig tid att utvecklas . Detta kan uppnås med användning av teletrafik modeller som de fångar beteendet hos systemet genom tolka bara funktioner och parametrar . Tidigare år har sett väldigt många teletrafik modeller för olika ändamål . Det är likväl inte modellen som ger en ordentlig ramverk för att analysera de mobilnät. Rapporten försöker ge ett ramverk för att analysera mobiltrafik och baserat på analysen vi designar teletrafik modeller som representerar de realistiska mobilnät och beräkna buffertunderflödesannolikhet .