Combining a strong skills syllabus with engaging topics and imaginative activities, each level offers the perfect balance of grammar points and communicative. • The approach to grammar is clearly structured, and controlled practice leads to fluency activities where students apply the target grammar in communicative situations • Inspiration Extra! sections contain Revision and Extension exercises to cater for differences in ability. These pages also offer creative project work, songs, games, puzzles, tongue twisters and sketches to act out • The approach to grammar is clearly structured, and controlled practice leads to fluency activities where students apply the target grammar in communicative situations • The approach to grammar is clearly structured, and controlled practice leads to fluency activities where students apply the target grammar in communicative situations. Inspiration grows with its students to reflect their changing needs and interests, making it the ideal choice to motivate teenagers.
Inspiration 1 Resource Pack Builder
|Формат:|| Страниц 112|
Evaluating the GPRS Radio Interface for Different Quality of Service...
Figure 8 i ves iga es he impac of he maximum umber of GPRS user per cell o he performa ce of GPRS for he dy amic cha el alloca io scheme wi h 1 PDCH reserved. Of course, he expec ed umber of GPRS users should be less ha he maximum umber i order o avoid he rejec io of ew GPRS sessio s. O he o her ha d, he maximum umber of ac ive GPRS sessio s mus be limi ed for guara eei g quali y of service for every ac ive GPRS sessio eve u der high raffic. he radeoff be wee i creasi g performa ce for allowi g more ac ive GPRS sessio s a d he i creasi g blocki g probabili y for GPRS users is illus ra ed by he curves of Figure 8. Co clusio s his paper prese ed a discre e-eve simula or o he IP level for he Ge eral Packe Radio Service (GPRS). Wi h he simula or, we provided a comprehe sive performa ce s udy of he radio resource shari g by circui swi ched GSM co ec io s a d packe swi ched GPRS sessio s u der a s a ic a d a dy amic cha el alloca io scheme. I he dy amic scheme we assumed a reserved umber of physical cha els perma e ly alloca ed o GPRS a d he remai i g cha els o be o -dema d cha els ha ca be used by GSM voice service a d GPRS packe s.