Certification of lightning protection for a full-authority digital engine control

FADEC systems present many challenges to the lightning protection engineer. Verification of the protection-design adequacy for certification purposes presents additional challenges. The basic requirements of the certification plan of a FADEC is to demonstrate compliance with Federal Airworthiness Regulations (FAR) 25.1309 and 25.581. These FARs are intended for transport aircraft, but there are equivalent sections for general aviation aircraft, normal and transport rotorcraft. Military aircraft may have additional requirements. The criteria for demonstration of adequate lightning protection for a FADEC systems include the procedures outlined in FAA Advisory Circular (AC) 20-136, Protection of aircraft electrical/electronic systems against the indirect effects of lightning. As FADEC systems, including the interconnecting wiring, are generally not susceptible to direct attachment of lightning currents, the verification of protection against indirect effects is primarily described

Design of lightning protection for a full-authority digital engine control

The steps and procedures are described which are necessary to achieve a successful lightning-protection design for a state-of-the-art Full-Authority Digital Engine Control (FADEC) system. The engine and control systems used as examples are fictional, but the design and verification methods are real. Topics discussed include: applicable airworthiness regulation, selection of equipment transient design and control levels for the engine/airframe and intra-engine segments of the system, the use of cable shields, terminal-protection devices and filter circuits in hardware protection design, and software approaches to minimize upset potential. Shield terminations, grounding, and bonding are also discussed, as are the important elements of certification and test plans, and the role of tests and analyses. Also included are examples of multiple-stroke and multiple-burst testing. A review of design pitfalls and challenges, and status of applicable test standards such as RTCA DO-160, Section 22, are presented

Looking for Mr. White: Uncovering the Furniture, Business and Life of Philadelphia Cabinetmaker Charles Haight White

In-depth analysis of the furniture and business of 19th century cabinetmaker Charles Haight White (1796-1876). Biography chapter chronicles his social associations in Philadelphia, including his involvement in the Franklin Institute. This thesis also includes an analysis of White\u27s portfolio, which is primarily comprised of works in the Empire, Rococo Revival and Gothic Revival styles. White, a large exporter to the South, had a clientele base of primarily wealthy Americans. Two chapters discuss White\u27s patrons in the North and South and consumption in both geographic areas. This thesis concludes with an analysis of how White\u27s furniture is interpreted today and also a thorough interpretation of his furniture suite at Springfield Plantation in Fort Mill, SC

Postcard: To H. Borden. M.D.

This black and white printed postcard is a formal United States Postal Card . It has a border of lines forming a pattern. There is a postage image of a woman facing the left. It states, U.S. Postace One Cent . There is handwriting with a name and address below. There is handwriting on the back of the card.https://scholars.fhsu.edu/tj_postcards/1089/thumbnail.jp

Tropical–North Pacific Climate Linkages over the Past Four Centuries

Analyses of instrumental data demonstrate robust linkages between decadal-scale North Pacific and tropical Indo-Pacific climatic variability. These linkages encompass common regime shifts, including the noteworthy 1976 transition in Pacific climate. However, information on Pacific decadal variability and the tropical high-latitude climate connection is limited prior to the twentieth century. Herein tree-ring analysis is employed to extend the understanding of North Pacific climatic variability and related tropical linkages over the past four centuries. To this end, a tree-ring reconstruction of the December-May North Pacific index (NPI)-an index of the atmospheric circulation related to the Aleutian low pressure cell-is presented (1600-1983). The NPI reconstruction shows evidence for the three regime shifts seen in the instrumental NPI data, and for seven events in prior centuries. It correlates significantly with both instrumental tropical climate indices and a coral-based reconstruction of an optimal tropical Indo-Pacific climate index, supporting evidence for a tropical-North Pacific link extending as far west as the western Indian Ocean. The coral-based reconstruction (1781-1993) shows the twentieth-century regime shifts evident in the instrumental NPI and instrumental tropical Indo-Pacific climate index, and three previous shifts. Changes in the strength of correlation between the reconstructions over time, and the different identified shifts in both series prior to the twentieth century, suggest a varying tropical influence on North Pacific climate, with greater influence in the twentieth century. One likely mechanism is the low-frequency variability of the El Nino-Southern Oscillation (ENSO) and its varying impact on Indo-Pacific climate.</p

Accidental ethnografiction: reflections on the value of creative writing in anthropology

This is the final version. Available from Anthropology Ireland via the DOI in this record. In this article I reflect on my experience of researching and writing The Invisible Crowd: a novelthat was recognised as a work of ethnografiction by anthropologists on the basis of its depth of engagement with the British asylum system and dominant cultural narratives of immigration. I go on to make a case for interdisciplinarity, for the use of creative writing techniques in anthropology, and for genre fluidity within academic writing and beyond

Headscarves, human rights, and harmonious multicultural society: implications of the French ban for interpretations of equality

This is the final version. Available from Wiley via the DOI in this record. Through the lens of the French law prohibiting Muslim headscarves in schools, this article examines the way in which societal tensions that arise in the context of religious and cultural pluralism are translated into legal discourses relating to human rights and equality. It explores the way in which the law is rooted in France’s broader sociopolitical structure and history and contrasts it to the United Kingdom and Turkey. It proposes that the law is based on an anachronistic, formal interpretation of equality that is inappropriate for addressing the inevitable cultural diversity of modern French society, and through its permeation into law and policymaking more widely, it is a primary cause of the heightened social tensions involving the Muslim minority. An assessment of the legitimacy of a law that restricts minority groups’ cultural practices in this way in any society should be based on a substantive interpretation of equality and should necessarily involve an active endeavor to understand the meanings of those cultural practices for those groups within their distinct context. Upon this foundation, law and policy can be developed in a way that better reconciles the pluralism of modern society with the common objectives of social harmony, stability, and tolerance

Programmable RNA-Guided Large DNA Transgenesis by CRISPR/Cas9 and Site-Specific Integrase Bxb1.

The inability to insert large DNA constructs into the genome efficiently and precisely is a key challenge in genomic engineering. Random transgenesis, which is widely used, lacks precision, and comes with a slew of drawbacks. Lentiviral and adeno-associated viral methods are plagued by, respectively, DNA toxicity and a payload capacity of less than 5 kb. Homology-directed repair (HDR) techniques based on CRISPR-Cas9 can be effective, but only in the 1-5 kb range. In addition, long homology arms-DNA sequences that permit construct insertion-of lengths ranging from 0.5 to 5 kb are required by currently known HDR-based techniques. A potential new method that uses Cas9-guided transposases to insert DNA structures up to 10 kb in length works well in bacteria, but only in bacteria. Surmounting these roadblocks, a new toolkit has recently been developed that combines RNA-guided Cas9 and the site-specific integrase Bxb1 to integrate DNA constructs ranging in length from 5 to 43 kb into mouse zygotes with germline transmission and into human cells. This ground-breaking toolkit will give researchers a valuable resource for developing novel, urgently needed mouse and human induced pluripotent stem cell (hiPSC) models of cancer and other genetic diseases, as well as therapeutic gene integration and biopharmaceutical applications, such as the development of stable cell lines to produce therapeutic protein products

Measuring and Applying Data about Users in the Seton Hall Library

We present data on how faculty and students at Seton Hall University use scholarly articles and books, how the library can present its findings to stakeholders, and how librarians can learn from these findings to better meet user needs. The data were gathered using questionnaire surveys of university faculty, graduate students, and undergraduate students as part of the IMLS Lib-Value project and based on Tenopir and King Studies conducted since 1977. Many questions used the critical incident of the last article and book reading to enable analysis of the characteristics of readings, in addition to characteristics of readers. Seton Hall’s ejournal collection is vital to its users, supporting faculty research and teaching and student coursework. However, high use of books from non-library sources suggests some deficiencies in the collection. Findings show an opportunity to brand library material to clearly distinguish it from what is perceived as ‘free on the web,’ examine use of both print and e-books, and work with professors to increase student awareness and use of library resources