منابع مشابه
Environmentally Responsible Electronics Packaging
he United States is running out of T landftlls and that is where most trash, and thus most packaging 1 material, ends up. For example, we generate 180 million tons of solid waste per year, 70% of which goes into landfills. However, in the last 12 years, two-thirds of our landfills have been exhausted. The problem gained national attention in 1989 when a garbage barge from New York wandered acro...
متن کاملHigh Temperature Electronics Packaging
Materials and processes are being developed for packaging of low and medium power, high temperature electronics (up to 500). Ceramic (Al2O3 and AlN) hermetic packages are being used. Die attach techniques based on patterned Au bumps, Au-Si and off-eutectic Au-Sn have been demonstrated. Au thermosonic wire bonding provides a monometallic interconnect system between the die and the package pads. ...
متن کاملParasitics in Power Electronics Packaging
In this paper we investigate the influence of 1st-level packaging components on the electromagnetic behaviour of power electronic modules. The main goal is to identify the critical layout paths and packaging components and to understand the mechanisms that affect the module performance. Several power electronics packaging technologies are compared on the basis of their electrical and electromag...
متن کاملnew semigroup compactifications via the enveloping semigroups of associated flows
this thesis deals with the construction of some function algebras whose corresponding semigroup compactification are universal with respect to some properies of their enveloping semigroups. the special properties are of beigan a left zero, a left simple, a group, an inflation of the right zero, and an inflation of the rectangular band.
15 صفحه اولon the comparison of keyword and semantic-context methods of learning new vocabulary meaning
the rationale behind the present study is that particular learning strategies produce more effective results when applied together. the present study tried to investigate the efficiency of the semantic-context strategy alone with a technique called, keyword method. to clarify the point, the current study seeked to find answer to the following question: are the keyword and semantic-context metho...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of SHM
سال: 1998
ISSN: 1884-1198,0919-4398
DOI: 10.5104/jiep1993.14.1