With the completion of 3GPP LTE standard，the commercial application of LTE can be expected soon．The paper gives a Functional Model of the RRC sub layer in LTE system and pays more attention to the assignment of the RRC sub-layer and the state transitions between them．There is a detailed description of the causes and processes for RRC connection reestablishment in this paper．In addition，it also includes the study of RRC Connection Reestablishment．Researches show that it plays an important role for reconfigure SRB1 and resumes data transfer only for this RB．

For resolving the difficulty that some patients need to be cared in a long term at home，this paper presents a case of distant wireless medical monitoring system based on GPRS．The system uses GPRS network to transfer data by point-to-multipoint which has high speed and low cost；uses a portable design so it is convenient and flexible；uses various anti-disturbance measures to improve the reliability of the system．In addition，the system is real-time online which ensures the medical care center to dynamically get the various pathological parameters of the presents，and to deal with emergencies timely．

With the rapid development of intelligent buildings and intelligent communities，the intelligent entrance guard system which is the main component of the intelligent building security protection system has become one of the most important security protection measures to ensure the people and their properties．In order to realize the intelligent management of the entrance areas，this article designs and implements a set of intelligent entrance guard system based on SSH and Palmprint Recognition Technology by adopting palmprint recognition technology which is the most credible in combination property in biology identification technology，so as to supervise and manage effectively by distinguishing and analyzing the information delivered by the “handkey II”．

This paper firstly introduces the mobile agent technology and its advantages． Then the system structure of mobile agent is illustrated．Finally the application of mobile agent on network management is analyzed，including two parts：the improved network management system structure Module based on mobile agent and the system flowchart．

The Symbol Error Rate (SER) performance of the non-cooperative MPSK communication system with mismatched roll-off factor of the transmitting and receiving square root raised-cosine (SRRC) filter is studied．Simulation results show that without the prior knowledge of the transmitting roll-off factor，the optimum receiving roll-off factor with minimal performance degradation ranges from 0．4 to 0．6．Furthermore，only insignificant performance improvement can be achieved by using higher order receiving SRRC filter with higher implementation complexity．

Campus network can provide a platform of university development，but the security problems of campus network are more and more prominent．This article describes vulnerable security problems，and analyzes the reason．Finally，it proposes the security management policies for the security problem of campus network．

As a special kind of multi-hop mobile wireless network，Ad Hoc network has a wide range of applications．This article described the main features of Ad Hoc network，analyzed the typical network attack methods，and then proposed the corresponding policies，focused on the key issues such as the key management of mobile Ad Hoc network、the development trend of the new Invasion Detection System which is suitable for Ad Hoc network．

With the development of modern information technology，Internet sharing and availablity as well as their interconnection is increasingly expanding．New Internet such as commercial digital currency and Internet banking are in a rapid rise due to the Internet’s popularity，and then the computer network security become more and more important．This article summarizes some research and gives some recommendation of the network information security．

This paper presents the construction idea and methods of 3D models of mechanical parts library，describes 3D modeling， virtual reality，database and network technology． This system realizes real-time interactive functions through virtual reality technology，including the operation of 3D model such as translation， rotation， zoom out and in．

This paper uses MATLAB-simulink toolbox to build a small current grounding system simulation models，and simulates a variety of situation of the single-phase ground fault．By analyzing the waveform of zero-sequence current，we can select the fault line．

This paper studies the Microsoft Speech SDK5．1 (SAPI5．1)，and concludes how to implement the speech recognition system based on VC++6．0 using SAPI5．1．Further，the author designs a speech recognition software which can record the voice．

The method of constructing a x3d virtual reality system will be different when using different X3d players．Among of many x3d players，BS Contact Player is good at rendering the x3d scene，and it provides a powerful application programming interface to control the x3d scene．In this paper，BS Contact is used as x3d player to build x3d scene．An example is also given for explaining x3d interaction technology in detail．

This paper uses FLEX technology as the solution for Rich Internet Applications, and researches on the development of the internal business management system. The Flex technology in RIA solution is used as the front design for program interface, and the service-oriented architecture middleware platform is used for backend business logic. The system can provide the orderly and efficient management to the enterprise customer information，product information，shipping information，purchase information，invoicing information inquiries and inventory．

In order to meet with the need of multi-service，high-bandwidth communication access in oil and gas production areas，with the strong development momentum，EPON is regarded as the development direction of access network，which has the advantages of low-cost，high security and multi-service integrated solution．This paper introduces the features of EPON，and then discusses the application of EPON in access network of Changqing oil and gas production area，providing the reference to achieve the telecommunication access with multi-service and high bandwidth in Changqing oil and gas production area．

Inspired by the Biological Immune System，Computer Immune System is a new field of computer intelligence research．It demonstrates the excellent capability of information processing in network invasion detection and virus inspection．To detect script-virus，an immunity-based script-virus detection method is presented．Self-tolerance mechanism in immune system is used for reference．Script-code is presented to antigen．Antibody simulates detector in the environment of virus detection．Antibody is classified according to immunity learning mechanism，and the dynamic production and elimination mechanism of antibody is set up to detect mutated script-virus．

With the rapid development of China’s road transport，electronic toll collection system has been gradually showing more and more powerful function．In this paper， non-parking electronic toll collection system is designed based on radio frequency identification technology．After giving the system-level design and structure design，the read-write mode of radio frequency IC card and the implementation of the multi-lane electronic fare collection are analyzed．All this work is significative to enhance the level of China’s road traffic intelligence and information management．

The employment of the university and college graduates has become the focus of the whole society．Facing with the sophisticated situation of the employment of computer graduates，it is real meaningful for promotion of the employment to stipulate the correct strategy and means of school，and to adjust the objectives and schedule of talent cultivation，and also to cultivate students to be qualified professionals suiting the requirement of talent market．In order to find out the problems encountered by society，school and college computer graduates in the respect of employment，an analysis on the result of a questionnaire is made and some advices for reference are proposed．

with more frequent use of U-disk， it is becoming the mainstream of movable storage device while viruses aiming at U-disk are devised out．The struggling with U-disk virus is one of the most troublesome experienses of U-disk users．An analysis on the symptoms and characteristics is carried out and feasible solutions to tackle the U-disk viruses are proposed in the paper．

In order to improve the efficiency of book sales，this paper uses Visual C + + 6．0 development tool，using its MFC Class Library，combined with Access database to develop the book sale system software．And the software has been applied to the management of book sale activity．