4,635 research outputs found

    Thick-Film and LTCC Passive Components for High-Temperature Electronics

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    At this very moment an increasing interest in the field of high-temperature electronics is observed. This is a result of development in the area of wide-band semiconductors’ engineering but this also generates needs for passives with appropriate characteristics. This paper presents fabrication as well as electrical and stability properties of passive components (resistors, capacitors, inductors) made in thick-film or Low-Temperature Co-fired Ceramics (LTCC) technologies fulfilling demands of high-temperature electronics. Passives with standard dimensions usually are prepared by screen-printing whereas combination of standard screen-printing with photolithography or laser shaping are recommenced for fabrication of micropassives. Attainment of proper characteristics versus temperature as well as satisfactory long-term high-temperature stability of micropassives is more difficult than for structures with typical dimensions for thick-film and LTCC technologies because of increase of interfacial processes’ importance. However it is shown that proper selection of thick-film inks together with proper deposition method permit to prepare thick-film micropassives (microresistors, air-cored microinductors and interdigital microcapacitors) suitable for the temperature range between 150°C and 400°C

    The Rockefeller Brothers Fund's Western Balkans Program: Midterm Impact Assessment

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    The Rockefeller Brothers Fund (RBF) commissioned an impact assessment of its Western Balkans program from 2010 to 2015. As the team who carried out this assessment, our overall conclusion from the assessment is that the RBF program in the Western Balkans is having meaningful positive impact, and it is relevant to the developments in Serbia, Montenegro, Kosovo, and the rest of the region. We believe the program is well designed and is achieving a lot with a relatively small amount of money

    A Rite of Rebirth

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    Effects of Active and Passive Error Correction on Matching Objects-to-Picture Tasks

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    Error correction research has shown that active student response is more effective in enhancing performance for specific tasks compared to a passive student response. However, specific error correction procedures such as an error statement (e.g., saying no ), modeling the correct response, and no feedback have shown inconsistent findings due to the idiosyncratic learning nature of individuals. This study compared the effectiveness of an error statement and modeling the correct response with an active and passive student response on a matching object-to-picture task. The results found that there were no differences in the number of sessions to mastery for the exemplars taught in either of the error correction procedures for two of the three participants. This study suggests that error-correction procedures may be individualized to the learner rather than applying the same error-correction method across all children with autism

    Molecular Analysis of Virulence Factors Unique to Leptopilina heterotoma-a Parasitic Wasp of Drosophila spp.

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    Endoparasitioid wasps of Drosophila spp. frequently avoid or overcome the immune defense mechanisms of their fly hosts. Leptopilina heterotoma (Lh) is a generalist wasp species, successful on many Drosophila spp. world-wide. During oviposition, the female wasp introduces venom proteins and virus-like particles (VLPs) into developing fly larvae. VLPs are endocytosed by plasmatocytes, a macrophage-like blood cell that is the most abundant hemocyte present in the circulating hemolymph. Once internalized, VLPs destroy plasmatocytes by programmed cell death. To understand the contributions of VLP proteins in VLP trafficking within host cells, we took advantage of proteomic data from purified Lh VLPs. Two novel enzymes encoded by venom gland cDNA clones 9A08 and 2E04 were identified. To understand how 9A08 exerts virulence, an unbiased and comprehensive Synthetic Genetic Array (SGA) screen covering all yeast genes was done to identify the cellular pathways or genetic networks most affected by 9A08 overexpression. While several potential categories of functionality were discovered, the most relevant interactions pointed to 9A08 functioning in retrograde transport and vacuolar protein sorting, leading us to hypothesize that 9A08 helps mediate endocytosis of VLPs in fly plasmatocytes. We will also discuss the precise endocytic retrograde trafficking routes that VLPs take before they are disposed or kill plasmatocytes. The most prominent co-localization of p40 occurred with compartmental marker signals of the late endosomes, marked by Rab7-GFP; higher VLP signals correlated with late endosomes in plasmatocytes for animals that underwent a longer post-infection recovery time. Some colocalization of VLP was also observed with the Rab5-GFP as well

    \u3cem\u3eKrishna v. Lee\u3c/em\u3e Extricates the Inextricable: An Argument for Regulating the Solicitation in Charitable Solicitations

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    This Comment argues that, in the wake of the Supreme Court\u27s decision in Society for Krishna Consciousness v. Lee, state and local regulations are more likely to pass federal constitutional muster if they regulate obnoxious fundraising practices defined with sufficient precision. The Riley trilogy and the continued existence of charitable solicitation scams have shown that attempting to prevent the improper use of contributions intended for charitable purposes by regulating how much charities pay for fundraising services has been not only unconstitutional but also ineffective. Part II is a brief review of the Riley trilogy, with an emphasis on the commercial speech analysis the Supreme Court employed. In Part III, Krishna is analyzed as an example of one situation where part of the solicitation was successfully extricated and regulated. In Part IV, this Comment examines whether and to what extent the Washington Constitution provides greater or different protection to charitable solicitations under the state constitutional freedom of speech provision. \u27 Finally, in Part V, the elements of a regulatory scheme that passes both federal and state constitutional limitations are discussed
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