2,328 research outputs found
Bandwidth of linearized electrooptic modulators
Many schemes have been proposed to make high dynamic range analog radio frequency (RF) photonic links by linearizing the transfer function of the link's modulator. This paper studies the degrading effects of finite transit time and optical and electrical velocity dispersion on such linearization schemes. It further demonstrates that much of the lost dynamic range in some modulators may be regained by segmenting and rephasing the RF transmission line
East-West Center degree student alumni : report of a survey reviewing the alumni from the first twenty-five years
For more about the East-West Center, see http://www.eastwestcenter.org/</a
A chain of kings
The chronicles of Gowa and Talloq are the most important historical sources for the study of pre-colonial Makassar. They have provided the basic framework and much of the information that we possess about the origins, growth, and expansion of Gowa during the sixteenth and seventeenth centuries. During this period Gowa and its close ally Talloq became the most powerful force in the eastern Indonesian archipelago, and historians have relied heavily on the chronicles to chart the developments of this period. Available for the first time in English translation, the two texts will offer historians and other scholars an invaluable foundation on which to base interpretations of this crucial place and time in Indonesian history. This volume is required reading for scholars of pre-modern Southeast Asia, including historians, linguists, anthropologists, and others.
William Cummings is an associate professor of history at the University of South Florida. He is the author of Making blood white; Historical transformation in early modern Makassar (2002) and numerous articles about Makassarese history and culture
Education from the bottom up: UNICEF's education programme in Somalia
This case study looks at UNICEF's education programme in Somalia carried out between 1991 and 2010. Highlighted are the contexts in which the programme operated, the challenges it faced, and the ways it adapted and learned.Daraasaadkani wuxuu muujinayaa barnaamijka waxbarasho ee UNICEF ay ka qabatay Soomaaliya sannadaha 1991 ilaa 2010: barnaamijka ay ku dhaqaaqtay, doodihii ay la kulantay iyo sidii ay ula qabsatay.Questo studio presenta il programma di educazione dell'UNICEF effettuato in Somalia tra il 1991 e il 2010: i contesti in cui ha operato il programma, le sfide che ha dovuto affrontare e modi in cui si Ăš adattato
A lead sulfide near infrared detection system
The infrared region of the spectrum is conveniently divided into the near infrared, which extends from the red end of the visible to about 25 microns, and the far infrared, which continues to an ill-defined division point of approximately 1,000 microns. The near infrared region has been further subdivided on the basis of instrumental techniques so that the particular portion of the spectrum consisting of radiations of wave length up to 3 microns has become known as the photoelectric infrared.
Several types of detection instruments have been designed and perfected for work in the photoelectric region, but new methods and materials are constantly being sought which might give an increase in sensitivity and contribute to the simplicity of the system. Recently developed lead sulfide photoconductive cells have some of the characteristics desired. These cells respond over a region in the spectrum from about .5 micron to 3.5 microns and their high sensitivity offers the possibility of greatly increased resolving power over previous methods used. Their subminiature size is also a highly desirable physical trait in almost all cases. Some writers, who have engaged in early research on photoconductive materials, have stated that lead sulfide and similar materials have opened up a wide new field in spectroscopy. As a result of these advantages, infrared detectors utilizing them are beginning to make an appearance.
A detector using a PbS cell and designed so that it would be readily adaptable to a standard spectrometer should be or great assistance in furthering the study of the near infrared. Such a device could be used advantageously in the classroom and laboratory when familiarization with and research into the longer electromagnetic radiations is desired. With this particular type of system in mind, design and construction of the photoconductive infrared detector was attempted. To check the dependability of the completed PbS system, it was proposed to use it in extending from the visible into the near infrared region, the dispersion curve of an ordinary glass prism --Introduction, pages 1-2
Groping in the dark : an early history of WHAS radio.
As the historiography on radio broadcasting continues to grow and forces examination from the macro-level to the micro-level, station histories are becoming increasingly important. The story of WHAS highlights the evolution of a nationally celebrated, innovative radio station dedicated to the service of its community. However, this thesis argues that WHAS radio\u27s arrival as a viable commercial business distorted the initial trajectories its forefathers intended for the medium thereby diluting its nobler aspects. A technological tool with the unprecedented power and influence -- to enlighten and enhance the daily lives of millions through education, the high art of classical music and opera, exposure to politics, and instant news updates, all filtered through a sense of duty to its listeners -- saw its grand ambitions watered down by the allure of increased profits sacrificing originality and imagination for accessible, light-entertainment programming generated from a handful of single sources
Sonic booms and marine mammals: Informational status and recommendations
The topics discussed include the following: introduction to marine mammals; marine mammal hearing; noise effects; sonic booms; sonic boom effects on marine mammals; predictions; and recommendations
Accounting Internships: A Student-Driven Approach
The battle for talent is fought over interns and not full-time hires according to the CPA Practice Management Forum (2005). Albrecht and Sacks (2000, 55) report that this internship learning experience needs to be carefully managed between the school and the firm. The purpose of this paper is to provide accounting educators with a model to effectively manage an internship program. Specifically this model will provide a unique “student driven” matching of students to employers in the internship process and an effective assessment for this process
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