150 research outputs found

    Mr. James Sheppard on Education and Employment

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    You can listen to the full interview and read a transcript HERE. James Sheppard was born in New York City in 1924, to parents who had just emigrated from Antigua. He was the eldest of four siblings. He graduated high school in 1942, and served in the Army during World War II. He worked as an aviation mechanic after the war; in 1957 he was hired by the Federal Aviation Administration as an inspector, a job he continued until he retired in 1985. He married twice, and had five children and seven grandchildren. His family moved to Westbrook, Maine, in 1971, when the FAA transferred him to work at the Portland Jetport. He was an active member of the Lions Club, and mentored local students. He discusses raising children, his family history in the Caribbean, discrimination he has faced as an African American throughout his life, Portland’s growing community of African immigrants, and cultural differences between Maine and New York City. Mr. James Sheppard on Education and Employment “My experiences raising children? Well, seeing to it that they attended school and seeing to it that they did their homework. That sort of thing. That\u27s standard I guess; regular stuff, I guess. I don\u27t know how to answer that. Between my wife and I, we saw to it that they did a lot of reading. And we did a lot of traveling. We did a lot of traveling to the Caribbean and South America, and we took them with us. In addition to seeing to it that they did their work at school. And they excelled, especially the one that\u27s a professor now. The youngest one gained. You know, you learn a lot. You don\u27t know anything with your first son; you get better as you have more children. By the time number five was born, we knew exactly how to channel things. And I think that\u27s why he came out number one. With my first son, I didn\u27t learn anything. [laughter] I shouldn\u27t say that; he\u27s the horticulturalist in New York.”https://digitalcommons.usm.maine.edu/we5quotes/1017/thumbnail.jp

    X Ray, Far, and Extreme Ultraviolet Coatings for Space Applications

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    The idea of utilizing imaging mirrors as narrow band filters constitutes the basis of the design of extreme ultraviolet imagers operating at 58.4 nm and 83.4 nm. The net throughput of both imaging-filtering systems is better than 20 percent. The superiority of the EUV self-filtering camera/telescope becomes apparent when compared to previously theoretically designed 83.4-nm filtering-imaging systems, which yielded transmissions of less than a few percent and therefore less than 0.1 percent throughput when combined with at least two imaging mirrors. Utilizing the self-filtering approach, instruments with similar performances are possible for imaging at other EUV wavelengths, such as 30.4 nm. The self-filtering concept is extended to the X-ray region where its application can result in the new generation of X-ray telescopes, which could replace current designs based on large and heavy collimators

    Sheppard, James

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    James Sheppard was born in New York City in 1924, to parents who had just emigrated from Antigua. He was the eldest of four siblings. He graduated high school in 1942, and served in the Army during World War II. He worked as an aviation mechanic after the war; in 1957 he was hired by the Federal Aviation Administration as an inspector, a job he continued until he retired in 1985. He married twice, and had five children and seven grandchildren. His family moved to Westbrook, Maine, in 1971, when the FAA transferred him to work at the Portland Jetport. He was an active member of the Lions Club, and mentored local students. He discusses raising children, his family history in the Caribbean, discrimination he has faced as an African American throughout his life, Portland’s growing community of African immigrants, and cultural differences between Maine and New York City.https://digitalcommons.usm.maine.edu/aa_hiwimi/1013/thumbnail.jp

    Emigration der bosnischen Jugend als Gegenwartsphänomen

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    Emigration der bosnischen Jugend kann als Postkriegszeitphänomen gesehen werden. Autorin entschied sich diesen Phänomen durch die empirische Studie an bosnischen Studierenden in Wien, nachzugehen. Sie sollte als Grundlage für die erleichterte und erfolgreiche Integration dienen

    VUV thin films, chapter 7

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    The application of thin film technology to the vacuum ultraviolet (VUV) wavelength region from 120 nm to 230 nm has not been fully exploited in the past because of absorption effects which complicate the accurate determination of the optical functions of dielectric materials. The problem therefore reduces to that of determining the real and imaginary parts of a complex optical function, namely the frequency dependent refractive index n and extinction coefficient k. We discuss techniques for the inverse retrieval of n and k for dielectric materials at VUV wavelengths from measurements of their reflectance and transmittance. Suitable substrate and film materials are identified for application in the VUV. Such applications include coatings for the fabrication of narrow and broadband filters and beamsplitters. The availability of such devices open the VUV regime to high resolution photometry, interferometry and polarimetry both for space based and laboratory applications. This chapter deals with the optics of absorbing multilayers, the determination of the optical functions for several useful materials, and the design of VUV multilayer stacks as applied to the design of narrow and broadband reflection and transmission filters and beamsplitters. Experimental techniques are discussed briefly, and several examples of the optical functions derived for selected materials are presented

    Myths of and obstacles in teaching entrepreneurship in Bosnia-Herzegovina and beyond

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    Podučavanje poduzetništva je postala popularna politička alternativa koja daje nadu za poboljšanja u ekonomiji, uključujući I smanjenu nezaposlenost. Nažalost ne postoji dovoljno dokaza sa lokalnog I regionalnog nivoa da je to stvarno tako, posebno imajući u vidu neadekvatne kapacitete za kreiranje politika, monitoring I evaluaciju ishoda te primijenjena istraživanja. Također postoje indikacije da se poduzetništvo koristi I kao mjera socijalne politike. Podučavanje u širem smislu, kao I podučavanje poduzetništva je sistemski zanemareno, uključujući koji sadrža jtreba imože da se podučava I kako, od koga, komu, te koji su realni ishodi. Sve ovo, plus vrlo nisko učešće odraslih u procesima stjecanja znanja ostavlja dosta nerazjašsnjenih pitanja I problema. Sistemski problem kao što je obrazovanje nastavnog kadra se ne mogu zanemarivati, kao niti mnoge relevantne istrazivačke teme sa lokalnim I regionalnim kontekstom.Teaching entrepreneurship has become a popular policy intervention that raises hopes for improved economic performance, including lower unemployment. Unfortunately there is no sufficient local and regional evidence that supports these expectations, in part because of substandard policy-making, monitoring and evaluation, and applied research capabilities. Furthermore, there are indications entrepreneurship is also being used as a social policy intervention, thereby generating different outcomes. Teaching in broader sense, as well as entrepreneurially-focused teaching has been neglected, including which content is to be taught and how, by whom, to whom, and what are likely long-term outcomes. All of this, combined with low adult learning participation rates, leaves many educational challenges unrecognized and unresolved. Without addressing systemic issues such as teacher training, any initiatives are likely to have only temporary, if any positive effects

    Multilayer thin film design for far ultraviolet polarizers using an induced transmission and absorption technique

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    An explanation of induced transmission for spectral regions excluding the far ultraviolet (FUV) is given to better understand how induced transmission and absorption can be used to design effective polarizers in the FUV spectral region. We achieve high s-polarization reflectance and a high degree of polarization (P equals (Rs-Rp)/(Rs+Rp)) by means of a MgF2/Al/MgF2 three layer structure on an opaque thick film of Al as the substrate. For example, our polarizer designed for the Lyman-alpha line (lambda equals 121.6 nm) has 87.95 percent reflectance for the s-polarization case and 0.43 percent for the p-polarization case, with a degree of polarization of 99.03 percent. If a double reflection polarizer is made with this design, it will have a degree of polarization of 99.99 percent and s-polarization throughput of 77.35 percent

    A vacuum ultraviolet spectrophotometric system

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    The development of a vacuum ultraviolet spectrophotometric system for measuring transmittance and reflectance at variable angles is presented. Using various detectors and sources, the spectrophotometric system has been used for wavelengths from 80 nm to 300 nm with optical components up to 80 mm in diameter. The capability exists to make measurements through the visible range
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