the symbian os architecture sourcebook design and evolution of a mobile phone os

... put Nokia at the top of the sales league for PDAs, ahead of Palm, Compaq and Sharp. (The Communicator was classified by market analysts as a PDA, partly because it had a keyboard, but also partly because ... drafted a paragraph about 2005 being a watershed year for Symbian OS, potentially its breakout year. Between then and now, as I write this at the end of 2006,...

Ngày tải lên: 01/06/2014, 11:21

... view the log as the most up to date ‘‘truth’’ about the state of the data on disk. The main difference is that database systems do not use the log as the final repository for data: a separate data ... again. The bandwidth of each of the five phases is shown separately. Sprite LFS has a higher write bandwidth and the same read bandwidth as SunOS with the excepti...

Ngày tải lên: 12/09/2012, 15:05

... real-time applications. The pri- mary motivation for basing the internal architecture of the TAO Event Channel on the ACE Streams framework is to sup- port static and dynamic channel configurations. ... registration, location, and acti- vation; request demultiplexing; framing and error-handling; parameter marshalling and demarshalling; and operation dis- patching. Figure...

Ngày tải lên: 19/02/2014, 18:20

... Management of Data, May 1994. [CS92] Rakesh Chandm and Arie Segev. Managing Temporal Financial Data in an Extensible Database. In Proceedings of the International Conference on Very Large ... Catalog Management: Each E-ADT can provide catalogs that maintain statistics and store schema information. Further, certain values may be named. Query Language: An E-ADT can provide...

Ngày tải lên: 16/03/2014, 16:20

Ngày tải lên: 23/03/2014, 22:21

... cage induction motor” and the “wound motor”. An explanation of the advantages and disadvantages of each is given. Essential concepts such as “synchronous speed”, “slip”, “torque” and the rated ... presents the fundamentals of the induction motor from a practical viewpoint. The small and large motor types are distinguished, where the typical electric and mech...

Ngày tải lên: 27/10/2013, 23:15

... the ratio of parasitic capacitance and sensing capacitance can be measured, and the estimated value is calculated assuming a total sensing capacitance of 60fF. Parasitic capacitance and mismatch ... signal paths have to overlap. The effec- tive total value of these parasitic capacitors is around 70fF, which is the same order as the total sensing capacitance. Parasitic...

Ngày tải lên: 27/10/2013, 23:15

... 2.9 (a) ) has the advantages of simplicity and less parasitic capacitance along with the disadvantage that a cross-axis acceleration signal generates a common-mode output. The common-centroid design ... C d is about an order of magnitude larger than C d_air , so approximately the total gap capacitance is equal to the sum of C m_air and C d_air , which is close to...

Ngày tải lên: 22/12/2013, 08:16

... Efficiency and Fairness Characteristics • Takes 7.5 seconds to reach 90% of the link capacity, independent of BDP • Satisfies max-min fairness if all the flows have the same end-to-end link capacity – Otherwise, ... 1000ms Fairness and Friendliness 50 TCP flows and 4 UDT flows between SARA and StarLight Realtime snapshot of the throughput The 4 UDT flows have si...

Ngày tải lên: 15/01/2014, 15:59