11 research outputs found

    South Pacific Destroyers: The United States Navy and the Challenges of Night Surface Combat in the Solomons Islands during World War II.

    Get PDF
    During the South Pacific campaigns of World War II, the United States Navy faced a formidable challenge in waging nighttime surface battles against the Japanese Navy. In a war that emphasized the carrier and battleship, the little destroyer became a key player in these actions. By studying this campaign from the perspective of the destroyers, three key factors emerge that allowed the Americans to achieve victory: innovation in tactics, adaption of technology, and efficient use of resources. The research for the thesis was based upon action reports, oral histories, and other documents obtained from the National Archives, Naval War College, Naval History and Heritage Command Center, and East Carolina University. The Japanese perspective was attained from numerous secondary sources. Innovation in tactics, technology, and resources allowed the Americans to persevere through severe defeats to achieve success against a very skilled Japanese Navy in the seas of the South Pacific

    Anatomical Variation of the Brachial Plexus: An Ancillary Nerve of the Middle Trunk Communicating with the Radix of the Median Nerve

    Get PDF
    Purpose: Variations in brachial plexus anatomy are common. As such, the knowledge of variations is essential for surgeons and anesthesiologists to decrease the risk of iatrogenic injuries. Moreover, brachial plexus variations often co-exist with aberrant vasculature. The median nerve is formed from contributions by the lateral and medial cords. This case report details a unique variant in the formation of the median nerve. Methods: The anatomical variant presented was identified during an upper-limb dissection of an adult cadaver. Results: The anatomical variant presented demonstrates a bifurcation of the middle trunk of the brachial plexus that coalesces to the radix of the median nerve. Although prior studies have demonstrated median nerve brachial plexus variations, the aforementioned variant arises directly from the middle trunk and communicates directly with the median nerve, while previously mentioned variants often connect to the medial or lateral cords. Conclusion: The communicating branch between the anterior division of the middle trunk and radix of the median nerve represents a unique and uncommon anatomical variation.

    Southern Folkways Journal Review Number 7

    Get PDF
    This collection of articles relating to Bulloch County begins with an report about a project on Statesboro history done by second graders at Trinity Christian School, followed by an account of the Martin Pittman Laboratory School, “Other Bulloch County Tales,” a record of the family of James R. Bird, and memories of the life of Rubye Akins Anderson by Mary Lawrence Anderson. Also included are two accounts on Brooklet, “How ‘Six Jug’ Became Atlanta’s First Automotive Star,” and research on the Dixon family.https://digitalcommons.georgiasouthern.edu/bchs-pubs/1035/thumbnail.jp

    Problematizing profit and profitability:Discussions

    Get PDF
    Purpose: The purpose of this paper is to report the outcome of an interdisciplinary discussion, in this AAAJ special issue, on the concepts of profit and profitability and various ways in which we could potentially problematise these concepts. It is our hope that a much greater attention or reconsideration of the problematisation of profit and related accounting numbers will be fostered in part by the exchanges we include here.Design/methodology/approach: This paper adopts an interdisciplinary discussion approach. It also brings into conversation ideas and views of several scholars on problematising profit and profitability in various contexts and explores potential implications of such problematisation.Findings: An interdisciplinary approach to problematising profit and profitability has a lot to offer. While profit and profitability are stigmas that corporations need to address, they tend to make invisible the collective endeavour of people who work hard (mostly in backstage) to achieve a desired profit level for a division and/or an organisation. Profit tends to preclude the social process of debating about the potential contradictions of ends and indeed the means of collective activity. An inherent message that we can decipher from the contributions to this discussion is the increasing need to worry about how managers are socialised to think that critical theory and interpretive research have no lessons for them. It is the failure of positivist researchers and practitioners to learn from the lessons that are offered by critical research in contrast to the suffocating influence of neo-liberal economic ideas. The impact of a fixation with markets and associated neo-liberal ideas that has led to a situation where organisations are strongly distrusted and in instances reviled in their attempts to make profits, at times illicitly.Originality/value: In setting out a future research agenda, our paper fosters theoretical and methodological pluralism focussing on problematising profit and profitability in various settings. The discussion perspectives offered in this paper provides not only a basis for further research in this essential area of discourse and regulation on the role and status of profit and profitability, but also provides emancipatory potential for practitioners (to be reflective of their practices and the undesirable consequences of such practices) whose overarching focus is on these socially constructed accounting numbers.Impact: Problematising opens-up the potential for interesting and significant theoretical insights. A much greater pragmatic and theoretical reconsideration of profit and profitability will be fostered by the exchanges we include here.</div

    Science Meets Traditional Knowledge: Water and Climate in the Sahtu (Great Bear Lake) Region, Northwest Territories, Canada

    Get PDF
    In July 2005, several scientists from the Mackenzie GEWEX (Global Energy and Water Cycle Experiment) Study, known as MAGS, met with aboriginal people in Deline on the shore of Great Bear Lake to exchange information on climate and water in the region. Topics discussed pertained directly to the northern environment, and they included climate variability and change, wind, lightning, lake ice, lake level, and streamflow. The traditional knowledge shared by the residents is a rich source of local expertise about the landscape and climate systems of the Deline area, while the scientific knowledge provided by MAGS presents a scientific basis for many observed climate and water phenomena, particularly on a broad regional scale. Through cordial and open discussions, the meeting facilitated the sharing of traditional knowledge and scientific results. The meeting enhanced the potential for traditional knowledge to help direct and validate scientific investigations and for scientific knowledge to be used in conjunction with traditional knowledge to guide community decision making.En juillet 2005, plusieurs scientifiques de l’étude Mackenzie GEWEX (expĂ©rience internationale sur l’énergie et le cycle hydrologique), connue sous le nom de MAGS, ont rencontrĂ© les Autochtones de Deline, sur la cĂŽte du Grand lac de l’Ours dans le but d’échanger des donnĂ©es sur les conditions climatiques et hydrologiques de la rĂ©gion. Les sujets Ă  l’étude se rapportaient directement Ă  l’environnement nordique, plus prĂ©cisĂ©ment la variabilitĂ© et le changement climatiques, le vent, la foudre, la glace lacustre, le niveau des lacs et le dĂ©bit des cours d’eau. Les connaissances traditionnelles des habitants de la rĂ©gion reprĂ©sentent une riche source d’expertise locale au sujet du paysage et des systĂšmes climatiques de la rĂ©gion de Deline, tandis que les connaissances scientifiques fournies par MAGS constituent une base scientifique pour de nombreux phĂ©nomĂšnes climatiques et hydrologiques observĂ©s, surtout sur une vaste Ă©chelle rĂ©gionale. GrĂące Ă  des discussions cordiales et ouvertes, cette rĂ©union a donnĂ© lieu au partage de connaissances traditionnelles et de rĂ©sultats scientifiques. Cette rĂ©union a Ă©galement permis d’accroĂźtre la possibilitĂ© que les connaissances traditionnelles aident Ă  diriger et Ă  valider les enquĂȘtes scientifiques, et que les connaissances scientifiques soient employĂ©es de pair avec les connaissances traditionnelles pour favoriser la prise de dĂ©cisions au sein de la collectivitĂ©

    Virtually good?: Disclosing the presuppositions behind the claimed inferiority of virtual worlds

    No full text
    Modern technology has changed the way we live, work, play, communicate, fight, love, and die. Yet few works have systematically explored these changes in light of their implications for individual and social welfare. How can we conceptualize and evaluate the influence of technology on human well-being? Bringing together scholars from a cross-section of disciplines, this volume combines an empirical investigation of technology and its social, psychological, and political effects, and a philosophical analysis and evaluation of the implications of such effects

    Accurate whole human genome sequencing using reversible terminator chemistry

    No full text
    DNA sequence information underpins genetic research, enabling discoveries of important biological or medical benefit. Sequencing projects have traditionally used long (400-800 base pair) reads, but the existence of reference sequences for the human and many other genomes makes it possible to develop new, fast approaches to re-sequencing, whereby shorter reads are compared to a reference to identify intraspecies genetic variation. Here we report an approach that generates several billion bases of accurate nucleotide sequence per experiment at low cost. Single molecules of DNA are attached to a flat surface, amplified in situ and used as templates for synthetic sequencing with fluorescent reversible terminator deoxyribonucleotides. Images of the surface are analysed to generate high-quality sequence. We demonstrate application of this approach to human genome sequencing on flow-sorted X chromosomes and then scale the approach to determine the genome sequence of a male Yoruba from Ibadan, Nigeria. We build an accurate consensus sequence from >30x average depth of paired 35-base reads. We characterize four million single-nucleotide polymorphisms and four hundred thousand structural variants, many of which were previously unknown. Our approach is effective for accurate, rapid and economical whole-genome re-sequencing and many other biomedical applications

    Introduction STATE OF THE CLIMATE IN 2022

    Get PDF
    Abstract —J. BLUNDEN, T. BOYER, AND E. BARTOW-GILLIES Earth’s global climate system is vast, complex, and intricately interrelated. Many areas are influenced by global-scale phenomena, including the “triple dip” La Niña conditions that prevailed in the eastern Pacific Ocean nearly continuously from mid-2020 through all of 2022; by regional phenomena such as the positive winter and summer North Atlantic Oscillation that impacted weather in parts the Northern Hemisphere and the negative Indian Ocean dipole that impacted weather in parts of the Southern Hemisphere; and by more localized systems such as high-pressure heat domes that caused extreme heat in different areas of the world. Underlying all these natural short-term variabilities are long-term climate trends due to continuous increases since the beginning of the Industrial Revolution in the atmospheric concentrations of Earth’s major greenhouse gases. In 2022, the annual global average carbon dioxide concentration in the atmosphere rose to 417.1±0.1 ppm, which is 50% greater than the pre-industrial level. Global mean tropospheric methane abundance was 165% higher than its pre-industrial level, and nitrous oxide was 24% higher. All three gases set new record-high atmospheric concentration levels in 2022. Sea-surface temperature patterns in the tropical Pacific characteristic of La Niña and attendant atmospheric patterns tend to mitigate atmospheric heat gain at the global scale, but the annual global surface temperature across land and oceans was still among the six highest in records dating as far back as the mid-1800s. It was the warmest La Niña year on record. Many areas observed record or near-record heat. Europe as a whole observed its second-warmest year on record, with sixteen individual countries observing record warmth at the national scale. Records were shattered across the continent during the summer months as heatwaves plagued the region. On 18 July, 104 stations in France broke their all-time records. One day later, England recorded a temperature of 40°C for the first time ever. China experienced its second-warmest year and warmest summer on record. In the Southern Hemisphere, the average temperature across New Zealand reached a record high for the second year in a row. While Australia’s annual temperature was slightly below the 1991–2020 average, Onslow Airport in Western Australia reached 50.7°C on 13 January, equaling Australia's highest temperature on record. While fewer in number and locations than record-high temperatures, record cold was also observed during the year. Southern Africa had its coldest August on record, with minimum temperatures as much as 5°C below normal over Angola, western Zambia, and northern Namibia. Cold outbreaks in the first half of December led to many record-low daily minimum temperature records in eastern Australia. The effects of rising temperatures and extreme heat were apparent across the Northern Hemisphere, where snow-cover extent by June 2022 was the third smallest in the 56-year record, and the seasonal duration of lake ice cover was the fourth shortest since 1980. More frequent and intense heatwaves contributed to the second-greatest average mass balance loss for Alpine glaciers around the world since the start of the record in 1970. Glaciers in the Swiss Alps lost a record 6% of their volume. In South America, the combination of drought and heat left many central Andean glaciers snow free by mid-summer in early 2022; glacial ice has a much lower albedo than snow, leading to accelerated heating of the glacier. Across the global cryosphere, permafrost temperatures continued to reach record highs at many high-latitude and mountain locations. In the high northern latitudes, the annual surface-air temperature across the Arctic was the fifth highest in the 123-year record. The seasonal Arctic minimum sea-ice extent, typically reached in September, was the 11th-smallest in the 43-year record; however, the amount of multiyear ice—ice that survives at least one summer melt season—remaining in the Arctic continued to decline. Since 2012, the Arctic has been nearly devoid of ice more than four years old. In Antarctica, an unusually large amount of snow and ice fell over the continent in 2022 due to several landfalling atmospheric rivers, which contributed to the highest annual surface mass balance, 15% to 16% above the 1991–2020 normal, since the start of two reanalyses records dating to 1980. It was the second-warmest year on record for all five of the long-term staffed weather stations on the Antarctic Peninsula. In East Antarctica, a heatwave event led to a new all-time record-high temperature of −9.4°C—44°C above the March average—on 18 March at Dome C. This was followed by the collapse of the critically unstable Conger Ice Shelf. More than 100 daily low sea-ice extent and sea-ice area records were set in 2022, including two new all-time annual record lows in net sea-ice extent and area in February. Across the world’s oceans, global mean sea level was record high for the 11th consecutive year, reaching 101.2 mm above the 1993 average when satellite altimetry measurements began, an increase of 3.3±0.7 over 2021. Globally-averaged ocean heat content was also record high in 2022, while the global sea-surface temperature was the sixth highest on record, equal with 2018. Approximately 58% of the ocean surface experienced at least one marine heatwave in 2022. In the Bay of Plenty, New Zealand’s longest continuous marine heatwave was recorded. A total of 85 named tropical storms were observed during the Northern and Southern Hemisphere storm seasons, close to the 1991–2020 average of 87. There were three Category 5 tropical cyclones across the globe—two in the western North Pacific and one in the North Atlantic. This was the fewest Category 5 storms globally since 2017. Globally, the accumulated cyclone energy was the lowest since reliable records began in 1981. Regardless, some storms caused massive damage. In the North Atlantic, Hurricane Fiona became the most intense and most destructive tropical or post-tropical cyclone in Atlantic Canada’s history, while major Hurricane Ian killed more than 100 people and became the third costliest disaster in the United States, causing damage estimated at $113 billion U.S. dollars. In the South Indian Ocean, Tropical Cyclone Batsirai dropped 2044 mm of rain at Commerson Crater in RĂ©union. The storm also impacted Madagascar, where 121 fatalities were reported. As is typical, some areas around the world were notably dry in 2022 and some were notably wet. In August, record high areas of land across the globe (6.2%) were experiencing extreme drought. Overall, 29% of land experienced moderate or worse categories of drought during the year. The largest drought footprint in the contiguous United States since 2012 (63%) was observed in late October. The record-breaking megadrought of central Chile continued in its 13th consecutive year, and 80-year record-low river levels in northern Argentina and Paraguay disrupted fluvial transport. In China, the Yangtze River reached record-low values. Much of equatorial eastern Africa had five consecutive below-normal rainy seasons by the end of 2022, with some areas receiving record-low precipitation totals for the year. This ongoing 2.5-year drought is the most extensive and persistent drought event in decades, and led to crop failure, millions of livestock deaths, water scarcity, and inflated prices for staple food items. In South Asia, Pakistan received around three times its normal volume of monsoon precipitation in August, with some regions receiving up to eight times their expected monthly totals. Resulting floods affected over 30 million people, caused over 1700 fatalities, led to major crop and property losses, and was recorded as one of the world’s costliest natural disasters of all time. Near Rio de Janeiro, Brazil, PetrĂłpolis received 530 mm in 24 hours on 15 February, about 2.5 times the monthly February average, leading to the worst disaster in the city since 1931 with over 230 fatalities. On 14–15 January, the Hunga Tonga-Hunga Ha'apai submarine volcano in the South Pacific erupted multiple times. The injection of water into the atmosphere was unprecedented in both magnitude—far exceeding any previous values in the 17-year satellite record—and altitude as it penetrated into the mesosphere. The amount of water injected into the stratosphere is estimated to be 146±5 Terragrams, or ∌10% of the total amount in the stratosphere. It may take several years for the water plume to dissipate, and it is currently unknown whether this eruption will have any long-term climate effect.</jats:p

    Accurate whole human genome sequencing using reversible terminator chemistry

    No full text
    corecore