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RISS 인기검색어
- 검색키워드
- 저자 : Andrew S. JOHNSON (검색결과 4 건)
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Early American Perceptions of Korea and Washington’s Korea Policy, 1882-1905
Andrew S. JOHNSON 한국학중앙연구원 한국학중앙연구원 2011 Korea Journal Vol.51 No.4
This study explores the cultural and ideological factors that conditioned U.S. policy in Korea during the early period of U.S.-Korean relations (1882-1905) and Washington’s de facto pro-Japan policy. Key officials in Washington possessed negative perceptions of Korea that influenced their policymaking on an ideological level. These men perceived Korea to be a backward country averse to progress and generally believed that Japan should guide Korea to civilization. This article suggests that Washington’s perceptions of Korea were firmly rooted in a cultural discourse on Korea, which was shaped largely by dominant representations of Korea in popular texts of the period. Representations of Korea in newspaper articles and commercial texts were influenced by Americans’ early hostile encounters with the “hermit nation,” colored by ethnographic descriptions of Korea’s “backwardness,” and informed by racial stereotypes and the ideologies of imperialism prevalent in the West. It was also mediated by Japanese information channels. These texts generated a popular discourse on Korea that likely impacted Washington’s perceptions of Korea and conditioned its pro-Japan policy. They help to explain the perceptual rift that developed between policymakers in Washington and the American diplomatic community in Korea. In focusing on the nature and origins of the early American discourse on Korea, the purpose of this article is to contribute to scholarship on early U.S.-Korean relations by exploring how cultural facts may have conditioned U.S. foreign policy in Korea. It also aims to start a conversation about public awareness of Korea during the period and the importance of public opinion as a political force in the United States.
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THE BRIGHTEST YOUNG STAR CLUSTERS IN NGC 5253
Calzetti, D.,Johnson, K. E.,Adamo, A.,Gallagher III, J. S.,Andrews, J. E.,Smith, L. J.,Clayton, G. C.,Lee, J. C.,Sabbi, E.,Ubeda, L.,Kim, H.,Ryon, J. E.,Thilker, D.,Bright, S. N.,Zackrisson, E.,Kennic IOP Publishing 2015 The Astrophysical journal Vol.811 No.2
<P>The nearby dwarf starburst galaxy NGC 5253 hosts a number of young, massive star clusters, the two youngest of which are centrally concentrated and surrounded by thermal radio emission (the 'radio nebula'). To investigate the role of these clusters in the starburst energetics, we combine new and archival Hubble Space Telescope images of NGC 5253 with wavelength coverage from 1500 angstrom 1.9 mu m in 13 filters. These include H alpha, P beta, and P alpha, and the imaging from the Hubble Treasury Program LEGUS (Legacy Extragalactic UV Survey). The extraordinarily well-sampled spectral energy distributions enable modeling with unprecedented accuracy the ages, masses, and extinctions of the nine optically brightest clusters (M-V < -8.8) and the two young radio nebula clusters. The clusters have ages similar to 1-15 Myr and masses similar to 1 x 10(4)-2.5 x 10(5) M-circle dot. The clusters' spatial location and ages indicate that star formation has become more concentrated toward the radio nebula over the last similar to 15 Myr. The most massive cluster is in the radio nebula; with a mass similar to 2.5 x 10(5) M-circle dot and an age similar to 1 Myr, it is 2-4 times less massive and younger than previously estimated. It is within a dust cloud with AV similar to 50 mag, and shows a clear near-IR excess, likely from hot dust. The second radio nebula cluster is also similar to 1 Myr old, confirming the extreme youth of the starburst region. These two clusters account for about half of the ionizing photon rate in the radio nebula, and will eventually supply about 2/3 of the mechanical energy in present-day shocks. Additional sources are required to supply the remaining ionizing radiation, and may include very massive stars.</P>
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Thermoneutrality but Not UCP1 Deficiency Suppresses Monocyte Mobilization Into Blood
Williams, Jesse W.,Elvington, Andrew,Ivanov, Stoyan,Kessler, Skyler,Luehmann, Hannah,Baba, Osamu,Saunders, Brian T.,Kim, Ki-Wook,Johnson, Michael W.,Craft, Clarissa S.,Choi, Jae-Hoon,Sorci-Thomas, Mar Grune & Stratton 2017 Circulation research Vol.121 No.6
<P>Conclusions: Warm ambient temperature is, like UCP1 deficiency, atheroprotective, but the mechanisms of action differ. Thermoneutrality associates with reduced monocyte egress from the bone marrow in a UCP1-dependent manner in mice and likewise may also suppress blood monocyte counts in man.</P>
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Isabel Kerrebijn,Sarah Atwi,Mai Elfarnawany,Andrew M. Eib,Joseph K. Eibl,Jenna L. Taylor,Kim Chul-Ho,Johnson Bruce D.,Jon-Émile S. Kenny 대한중환자의학회 2024 Acute and Critical Care Vol.39 No.1
Background: Using peripheral arteries to infer central hemodynamics is common among hemodynamic monitors. Doppler ultrasound of the common carotid artery has been used in this manner with conflicting results. The aim of this study was to investigate the relationship between changing common carotid artery Doppler measures and stroke volume (SV). We hypothesized that correlation between SV and carotid Doppler would improve with larger numbers of consecutively-averaged cardiac cycles. Methods: Twenty-seven healthy volunteers were recruited and studied in a physiology laboratory. Carotid artery Doppler pulse was measured with a wearable, wireless ultrasound during central hypovolemia and resuscitation induced by a stepped lower body negative pressure protocol. The change in maximum velocity time integral (VTI) and corrected flow time of the carotid artery (ccFT) were compared with changing SV using repeated measures correlation. Results: In total, 73,431 cardiac cycles were compared across 27 subjects. There was a strong linear correlation between changing SV and carotid Doppler measures during simulated hemorrhage (repeated-measures linear correlation [Rrm]=0.91 for VTI; 0.88 for ccFT). This relationship improved with larger numbers of consecutively-averaged cardiac cycles. For ccFT, beyond four consecutively-averaged cardiac cycles the correlation coefficient remained strong (i.e., Rrm of at least 0.80). For VTI, the correlation coefficient with SV was strong for any number of averaged cardiac cycles. For both ccFT and VTI, Rrm remained stable around 25 consecutively-averaged cardiac cycles. Conclusions: Using a wearable carotid Doppler ultrasound 73,431 cardiac cycles were compared to SV during central volume loss and resuscitation induced.
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