a professional is someone whose work involves performing a certain function with some degree of expertise. but a narrower definition limits the term to apply to people such as teachers and doctors, whose expertise involves not only skill and knowledge but also the exercise of highly sophisticated judgment, and whose accreditation necessitates extensive study, often university-based as well as p...

In this paper, we report a new structure for bipolar junction transistors based on concept of surface inversion. This structure is made up of only one PN junction and a metal with appropriate work function connected to the p region which results in an inversion of electrons in the semiconductor near the metal-semiconductor interface, this inversion layer plays the role of emitter n+ region. Sim...

An AI-7wt%Si-5vol%TiCp was worn against a cast iron disc in a tri-pin-on-disc machine, under dry sliding conditions at the sliding speed of 0.24 m/s and applied loads of 6, 20 and 40 N/pin. Stress-strain (`3-^9) curves were constructed by measuring the microhardness and the equivalent strain gradients in near surface regions on the cross-sectional surface prepared parallel to sliding direction....

در بررسی فون کنه های انباری سیستان که در سال های 1389 تا 1390 انجام گرفت در مجموع 17 گونه کنه متعلق به 11 جنس و 6 خانواده از 4 راسته میان استیگمایان (mesostigmata)، بی استیگمایان ((astigmata و پیش استیگمایان (prostigmata) و heterostigmata جمع آوری شد که در بین آنها گونه thyrophagus fungivorus و suidasia near pontifica برای اولین بار از ایران و گونه های gaeolaelaps hemolaelaps shealsi , raphigna...

Prof. Haack answers a series of questions on pragmatism, beginning with the origins of this tradition in the work of Peirce and James, its evolution in the work of Dewey and Mead, and its influence beyond the United States in, for example, the Italian pragmatists and the radical British pragmatist F. C. S. Schiller. Classical pragmatism, she observes, is a rich and varied tradition from which t...