澳洲的职业评估机构ACS 要的职业推荐信英语论文

1、澳洲的职业评估机构acs 要的职业推荐信-英语论文澳洲的职业评估机构acs 要的职业推荐信letter of recommendation(date) it is my pleasure to write this reference for mr. ting song born on nov,20th 1970 who has been working as a full time senior it supervisor responsible for our network security at our information technology & security departm

2、ent since march 2003 and till present. shanghai jiaoyun kumho passenger transport co., ltd. founded in 1996, delivered by the shanghai corporation and south korea kumho construction co., ltd. joint venture established operate highway passenger transport. one billion yuan in registered capital. is th

3、e first city to enter high-speed passenger transport industry, provinces and cities involved in the joint venture high-speed passenger transport. at present, the company has opened between anhui and jiangsu, zhejiang and other places more than 30 lines, more than 100 trips. in 2001, passenger transp

4、ort industry in shanghai took the lead through the international standard iso9001: 2000 quality certification, and achieved good economic and social benefits. since 2001, the per capita earning profits for five consecutive years more than 100,000 yuan, and shanghai model unit received five consecuti

5、ve honor. in may 2009, the company was named in shanghai three-star safety credit enterprise.mr. ting song first graduated from xinjiang radio and television university with a major of computer application in 1987 and then completed bachelor degree in the same area of study in 1991. given his educat

6、ional background, and his field of study recognized the work experience, who have been employed as our computer systems and network security experts. over the last three years with this company, mr. ting song has successfully accomplished a number of important projects. the details of some of the pr

7、ojects he has completed are listed as follows for reference:1. gps-based vehicle navigation and gprs network monitoringpositioning and navigation control system includes:1. car terminal (including micro-industrial computer, touch screen, gps receiver module, gprs communication module and power suppl

8、y, etc.)2. monitoring data center dsc (tcp / ip network server).chosen tianbao (trimble) the companys lassen sq / iq series gps receiver module. the module supports data formats are tsip and nema0183, in the current software systems, commonly used nema0183 format. nema 0183 agreement allows the sign

9、al source through a twisted pair serial communications data to be sent to one or more receiving end.micro-industrial computergps module data through rs-232 serial port directly to the micro-industrial computer, industrial computer running trough the electronic map software, it will show the vehicles

10、 current position and all the major geographic location. mini industrial computer not only has all the features ordinary computers, and has a high level of integration, small size, light weight, easy installation. gprs communication modulecar terminal embedded gprs communication module, it will gps

11、receiver module real-time location information sent to the remote database monitoring center to realize all the monitoring and scheduling of vehicles.monitoring and scheduling system, due to cover the monitoring, real-time scheduling operations, vehicle capacity, refresh rate and so on, select the a

12、ppropriate wireless data link and electronic maps, and to develop appropriate business software. gprs-/ ip protocol / the tcp / udp protocol stack can achieve real-time data exchange, but also in the existing public wireless communication systems maximum bandwidth, as well as the popular short messa

13、ge transmission compared to the same data length, the same time interval , its communication cost is such a short message january 6 or less. this article uses the power companys shenzhen-hong kong gprs wireless data transmission h7000s gprs network connection and data transmission of wireless commun

14、ication modules. when the wireless communication module of the gprs network to log on, it will be real-time gps receiver module location information is sent to the monitoring and scheduling the use of remote monitoring center. monitoring center is a public network with the ip address of the web serv

15、er, through the preparation of data center monitoring system software (mainly by the communication module, the electronic map database, vehicle information database, etc.), monitoring center to receive real-time vehicle terminal via wireless communication module to send to the data and conduct analy

16、sis and storage of all the vehicles the location and state of motion are displayed on the electronic map. and tips for different situations and alarm.monitoring centers webgis technology, the use of c / s or b / s architecture, monitoring center, and data server in a different physical location. the

17、 reliability of the equipment data server and the corresponding operations, maintenance requirements high, using the current. net technology, network services, through local monitoring center to access the data server to obtain data, send orders.using microsoft visual c #. net as a development platf

18、orm, using gprs module shenzhen hongdian the dynamic development of libraries, the dynamic development library provides a gprs wireless communication process used in some of the operational functions. development kit to the important structured as follows: 1.terminal registration information module

19、interface structure:typedef struct gprs_user_infochar m_userid 12; / / end module numberuint32 m_sin_addr; / / terminal blocks access to internet, proxy host ip address ofuint16 m_sin_port; / / terminal blocks access to internet, proxy host ip portuint32 m_local_addr; / / terminal module within the

20、ip address of mobile networkuint16 m_local_port; / / end module in the mobile net ip portchar m_logon_date 20; / / end module loginchar m_update_date 20; / / end module update timeuint8 m_status; / / terminal module statususer_info; 2. packet interface structure:typedef struct gprs_data_ recordchar

21、m_userid 12; / / end module numberchar m_recv_date 20; / / received packet timechar m_data_buf 1024; / / store received datauint16 m_data_len; / / receives the data packet lengthuint8 m_data_type; / / received packet typedata_record;2. video conference system this is our companys project to replace

22、the old video system, according to mr. song and his hard-study video conferencing systems. so that we get more security, functionality and higher performance improvement. this project has become our companys products. use of huawei 3com (h3c) of the mcu and video terminals, video conferencing system

23、s security, stability and reliable. uses proprietary embedded operating system, open a small, effective to prevent infection. safety considerations, equipment into the implementation of user rights management, and have password protection. 608澳洲的职业评估机构acs 要的职业推荐信h3cs mcu devices, has audio and video

24、 processing capabilities, support for h.261, h.263, h.264 video protocols, etc., as well as g.711, g.722, g.728 and other audio agreement, according to the actual situation to choose audio and video protocols. the 4cif video resolution of 704 576. support the international standard itu-t h323, h.323

25、 v4-compliant framework agreements, mg6030 is fully compatible with sip 2.0 protocol, the standard sip devices can and interconnection. to support sip-based voice, video call service (point to point, multi-point) services. h.323/sip dual protocol stack supports video conferencing terminals, sip prot

26、ocol stack implementation. mg6030 also supports h.323 protocol and sip protocols, and mcu, gk, voice gateways, sip servers and other types of devices to achieve a flexible networking. good system scalability. provided by the mcu devices have a very good scalability, including stand-alone expansion c

27、apability and capacity to more than one cascade. rich set of features, camera remote control, dual stream picture transmission, multicast, video wall, multi-group meetings and other functions concurrently, using ie browser, visit the mcus ip address, to realize the operation of all functions. a diff

28、erent user name and password to login to fully guarantee the security of the system and conferences.plug and play data collaboration. whiteboard, application sharing, desktop sharing, instant messaging, file transfer and other data conferencing applications. 3. enterprise e-mail system solutionschar

29、acteristics of hardware platforms and software systems 1) professional e-mail hardware platforms: intels top server, exclusive 100m bandwidth, tape backup; 2) using large-capacity step-style management techniques, support one million users, while supporting web, pop3, imap4, junk mail handling, etc.

30、; 3) using chinese web interface, support for smtp, pop3, imap, mime, s / mime,http/html/wml/wap, sasl, sieve,lmtp, ldap and other agreements and expansion;4) web page to support multiple languages (english, simplified and traditional chinese, etc.), different languages, different versions, differen

31、t domain names can be customized selection of different pages; 5) folder using the utf-7 encoding for different language versions of the e-mail client (outlook, webmail, etc.) to provide a consistent language support (can be extended to support multilingual domain names e-mail); 6) built-in html e-m

32、ail capability to handle inline attachment formats to ensure that the correct html format e-mail shows that support multimedia e-mail; 7) remote connectivity, mail receiving and forwarding restrictions, blacklisted (ubl) to support the use of flexible, easy to use scripting language to provide multi

33、-level filtering, with a strong anti-spam mechanisms; 8) to provide smtp auth support (only the user can use the certified smtp service); 9) support for digital signatures, encryption, transmission / storage, ssl, tls, s / mime, pkcs 12, etc.; 10) multi-layer firewall technology provides packet filt

34、ering, proxy servers and dynamic line-level filters, provide a high-level packet inspection and event logging functions, also supports user authentication and access policies for more than 5,000. 11) contacts for the exchange of chinanet backbone hub, the key nodes and the countrys only internet exc

35、hange center (nap) directly connected to ensure high-speed interconnect with other networks.4. vehicle driving data recorder information collection and management systemthis project is based on the internet as the basic data channel, in each of the distributed data acquisition needs of business unit

36、 client (road transport enterprises), the installation of data collection terminals and storage terminals, and through this end-to-vehicle traveling data recorder in data collection; simultaneously control service center premises equipment, remote data transmission module, for various business units

37、 for remote data collection, data collected automatically control center management system, and according to the user and the different needs of the industry management department to the original data analysis and aggregation, can generate business and trade management departments final decision sup

38、port information.vehicle driving record information output format:vehicle traveling data recorder to an external device (computer) output contains the following: real-time clock: the date and clock are used to achieve all recorder functions (record, output, display, data communication, etc.) mark th

39、e date and time. recorder should be able to year, month, day or yyyy / mm / dd way to record real-time date; should be able to hours, minutes and seconds, or hh: mm: ss way of recording real-time clock. accident doubt data: recent 360h in vehicle speed data (recording interval of 1min, the data with

40、in the average speed per minute); correspond to real-time clock of the vehicle mileage data; vehicle identification code, vehicle registration number, vehicle license classification; driver code, drivers license number; vehicle characteristics factor, that is, when the mileage of vehicles per kilome

41、ter driven speed sensor speed (r / km);subsystem name of the system environment using the software technology:collection terminal: windows xp c # / vb.net, xml, soapdata services: windows2000 advanced server,oracle 9i/sql server 2000 c + + / c # / vb.net, xml,web servicedata transmission interface: windows2000 advanced server c + + / c # / b.net, xml, com +,web servicepublic service platform: windows2000 advanc