逆流而上范文为教学中作为模范的文章，也常常用来指写作的模板。常常用于文秘写作的参考，也可以作为演讲材料编写前的参考。相信许多人会觉得范文很难写？下面我给大家整理了一些优秀范文，希望能够帮助到大家，我们一起来看一看吧。
美国留学计算机专业好吗篇一
having worked with mr. xiao xiao for three years at abc technology, i am very glad to recommend him for [what program? where?] as his supervisor, i have enjoyed a close acquaintance with him and, frankly speaking, mr. xiao is one of most excellent researchers that i have ever seen.
it is not easy for a new graduate to get into our company, the largest telecommunications company in asia. we were immediately impressed, though, by mr. xiao’s exceptionally outstanding performance in university. as an undergraduate, he was invited to enter our company at the master’s-degree salary level, and that confidence was rewarded with his very creative and knowledgeable mind. though there are many master’s or doctoral candidates in my team, mr. xiao’s performance has been the best of all. alone among all his teammates, he earned straight as during his probationary period.
mr. xiao’s first engagement was in the data communication r&d department at abc technology, where he worked on the bas(broadband access server) design used in hsr(high-speed switch route). he was in charge of the atm access of fr(frame relay) and independently designed a system providing eight channels of fr input interfaces. the system will encapsulate the frames into aal5 cells, and connect to hsr after being combined with other access units(e.g. ddn, lan emulation, psdn ).
mr. xiao proved to be a very diligent person, often working for several days without leaving the lab and sleeping on the couch when tired. as a result, in just four months he realized the access of frame relay from lan to atm cell with the optional bandwidth and priority packages. now, our hsr has provided for multiple countries, as thailand, laos, russia, uzbekistan, kyrgyzstan, cambodia, algeria, etc. in china, this product has a market share of more than 70% in this product field, bringing huge profits to our company.
in january 2000, mr. xiao began work in wireless telecommunication, focused on the base station(nodeb) research in 3g wcdma. nodeb is responsible for the mobility of user terminals at the access layer, supporting various services such as multimedia and voice or data. thanks to his solid track record in the development process, he earned a promotion to team manager in september 2000 leading the mpu(main processor unit) team. the mpu, based on the atm switch platform, will encapsulate the control plane information into aal5 cells as well as the user plane message into aal2 cells. finally, these atm cells will be sent to rnc(radio network controller) by ima(inverse multiplexing for atm) channel. the performance of this new product can match those in motorola, nokia, nec, and nortel, but it is much cheaper. this design is a very successful product of our company, and, in leading their development, mr. xiao demonstrated great patience, persistence, and a strong sense of responsibility. in 2001, mr. xiao earned the honor of "outstanding team leader" in our company through a highly competitive election that honors only two percent of team managers.
during his three years here, mr. xiao has shown great talent in creation and invention. as an acknowledged expert in embedded operating systems, he has got four patents for abc technology, all of which are widely applied in hardware design and algorithms. mr. xiao is also known as the top expert in verilog and vhdl at the shanghai r&d center. he is the youngest department manager in shanghai r&d center, and his creativity, intelligence, and diligence made him more capable than most doctors. i truly regret letting such an excellent member go, but i am willing to make this recommendation to help such a vigorous and promising young man develop his potential fully. for any more information, please feel free to contact me.
yours truly,
name
title
name of company or university
美国留学计算机专业好吗篇二
from: jiao shou
department of the special class gifted for youths
university of science and technology
hefei, anhui 230026@ p. r. china
july 1,1998
dear sir or madam:
i take great pleasure in recommending ren ren, one of my favorite students, for admission into your distinguished graduate program.
mr. ren was admitted in 1986 at 14 years f age into the special class for the gifted youths, my university's unique program that caters to the intellectual needs of unusually talented chinese youngsters. it was a rare privilege he earned with his nearly impeccable academic performance through the years of his elementary and secondary school.
he impressed me almost as he entered into my university, a major cradle of china's scientific and technological talents. at the time, members of the gifted class all had to spend half a month studying by themselves the principles of calculus and then take an exam so that we could evaluate their self-study capability. mr. ren scored the highest grade in that exam. he also exhibited a keenly whetted mind during class discussions. to my regret at the time, his english was not as good as his mathematics or physics. but i noticed he made a point of working especially hard in improving his english during his five undergraduate years with us. by now, he seems to be at least as proficient in english as most of his former classmates in the gifted class.
in my experience with mr. ren, i was impressed with not only his extraordinary intelligence but also his ambitions and persistence. i am sure that mr. ren will be an outstanding student in any doctoral program that he may care to enroll in. so i would like to support him firmly in his quest recommendation into account when considering his application. i would greatly appreciate it you decide to accept him as he wishes.
yours sincerely
jiao shou
professor and deputy head
