منابع مشابه
Not the Last Word: Codman Was Right--Spread The Word.
S econd only to the discovery of insulin by Sir Frederick G. Banting, the development of an ‘‘End Result System’’ by Ernest A. Codman MD was the greatest contribution to general medicine by an orthopaedic surgeon. You may know Codman more for his eponymous Codman’s Triangle (made by the elevated periosteum adjacent to a long bone tumor) or for his classification of proximal humeral fractures (w...
متن کاملAn Introduction to Spread Spectrum
Over the last eight or nine years a new commercial marketplace has been emerging. Called spread spectrum, this field covers the art of secure digital communications that is now being exploited for commercial and industrial purposes. In the next several years hardly anyone will escape being involved, in some way, with spread spectrum communications. Applications for commercial spread spectrum ra...
متن کاملAn Introduction to Spread Spectrum Systems
This report is a tutorial introduction to spread spectrum communication systems, and it should be accessible for a reader who has basic knowledge of digital modulation and channel coding. The authors have chosen to present the more advanced topics in the report from a signal space and channel coding point of view. While other approaches are certainly possible, the authors feel that the chosen a...
متن کاملChapter 2 Introduction to Spread Spectrum
As discussed in Chapter 0, a spread spectrum modulation produces a transmitted spectrum much wider than the minimum bandwidth required. There are many ways to generate spread spectrum signals. We are going to introduce some of the most common spread spectrum techniques such as direct sequence (DS), frequency hop (FH), time hop (TH), and multicarrier (MC). Of course, one can also mix these sprea...
متن کاملPatient blood management programs: how to spread the word?
Red blood cell (RBC) transfusions save lives and improve health; however, unnecessary transfusion practice exposes patients to immediate and long-term negative consequences. Indirect consequences of unnecessary transfusions are the reduced availability of RBC units for patients who are in need. Accumulating evidence shows that restricting RBC transfusions improves outcomes and current guideline...
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ژورنال
عنوان ژورنال: The Biochemist
سال: 2014
ISSN: 0954-982X,1740-1194
DOI: 10.1042/bio03605005