34,331 research outputs found
Het Ho-Lee rentemodel
No full textHet verslag legt het rentemodel van Ho en Lee uit en bekijkt verschillende eigenschappen van dit model, waaronder het arbitragevrij zijn en de kalibratie van het model.Technische WiskundeMathematicsElectrical Engineering, Mathematics and Computer Scienc
Correction to “Ultrafast Cation Exchange in Supra-Quantum Dots through Nanoporous Internal Structure”
No full textThe author list should be “Hyunmi Doh, Juwon Park, Junhwa Lee, Jiwon Bang, Sanghwa Jeong, Wonseok Lee, Ho Jin, and Sungjee Kim”, with an addition of a co-author, Junhwa Lee. Hyunmi Doh, Juwon Park, and Junhwa Lee contributed equally to this work. This change was agreed to by all authors and is reflected in the authorship of this correction.11Nsciescopu
The 1961 Kampong Bukit Ho Swee fire and the making of modern Singapore
No full textBy 1970, Singapore’s urban landscape was dominated by high-rise blocks of planned public housing built by the People’s Action Party government, signifying the establishment of a high modernist nation-state. A decade earlier, the margins of the City had been dominated by kampongs, home to semi-autonomous communities of low-income Chinese families which freely built, and rebuilt, unauthorised wooden houses. This change was not merely one of housing but belied a more fundamental realignment of state-society relations in the 1960s. Relocated in Housing and Development Board flats, urban kampong families were progressively integrated into the social fabric of the emergent nation-state. This study examines the pivotal role of an event, the great Kampong Bukit Ho Swee fire of 1961, in bringing about this transformation. The redevelopment of the fire site in the aftermath of the calamity brought to completion the British colonial regime’s ‘emergency’ programmes of resettling urban kampong dwellers in planned accommodation, in particular, of building emergency public housing on the sites of major fires in the 1950s. The PAP’s far greater political resolve, and the timing of and state of emergency occasioned by the scale of the 1961 disaster, enabled the government to rehouse the Bukit Ho Swee fire victims in emergency housing in record time. This in turn provided the HDB with a strategic platform for clearing other kampongs and for transforming their residents into model citizens of the nation-state. The 1961 fire’s symbolic usefulness extended into the 1980s and beyond, in sanctioning the PAP’s new housing redevelopment schemes. The official account of the inferno has also become politically useful for the government of today for disciplining a new generation of Singaporeans against taking the nation’s progress for granted. Against these exalted claims of the fire’s role in the Singapore Story, this study also examines the degree of actual change and continuity in the social and economic lives of the people of Bukit Ho Swee after the inferno. In some crucial ways, the residents continued to occupy a marginal place in society while pondering, too, over the unresolved question of the cause of the fire. These continuities of everyday life reflect the ambivalence with which the citizenry regarded the high modernist state in contemporary Singapore
Laimella tongyeongensis Barnes, Kim & Lee 2012
No full text<p> 10. <b> <i>Laimella tongyeongensis</i> Barnes, Kim & Lee 2012</b> </p> <p> (Barnes <i>et al</i>. 2012: 273–276, Fig. 3 a–d, 4 a–h; three males, one female and three juveniles, Tongyeong Bay, Korea, 49 m deep, mud).</p>Published as part of <i>Hong, Jung-Ho, Tchesunov, Alexei V. & Lee, Wonchoel, 2016, Revision of Cervonema Wieser, 1954 and Laimella Cobb, 1920 (Nematoda: Comesomatidae) with descriptions of two species from East Sea, Korea, pp. 333-357 in Zootaxa 4098 (2)</i> on page 348, DOI: 10.11646/zootaxa.4098.2.7, <a href="http://zenodo.org/record/256741">http://zenodo.org/record/256741</a>
HMOX1 gene promoter alleles and high HO-1 levels are associated with severe malaria in Gambian children.
No full textHeme oxygenase 1 (HO-1) is an essential enzyme induced by heme and multiple stimuli associated with critical illness. In humans, polymorphisms in the HMOX1 gene promoter may influence the magnitude of HO-1 expression. In many diseases including murine malaria, HO-1 induction produces protective anti-inflammatory effects, but observations from patients suggest these may be limited to a narrow range of HO-1 induction, prompting us to investigate the role of HO-1 in malaria infection. In 307 Gambian children with either severe or uncomplicated P. falciparum malaria, we characterized the associations of HMOX1 promoter polymorphisms, HMOX1 mRNA inducibility, HO-1 protein levels in leucocytes (flow cytometry), and plasma (ELISA) with disease severity. The (GT)(n) repeat polymorphism in the HMOX1 promoter was associated with HMOX1 mRNA expression in white blood cells in vitro, and with severe disease and death, while high HO-1 levels were associated with severe disease. Neutrophils were the main HO-1-expressing cells in peripheral blood, and HMOX1 mRNA expression was upregulated by heme-moieties of lysed erythrocytes. We provide mechanistic evidence that induction of HMOX1 expression in neutrophils potentiates the respiratory burst, and propose this may be part of the causal pathway explaining the association between short (GT)(n) repeats and increased disease severity in malaria and other critical illnesses. Our findings suggest a genetic predisposition to higher levels of HO-1 is associated with severe illness, and enhances the neutrophil burst leading to oxidative damage of endothelial cells. These add important information to the discussion about possible therapeutic manipulation of HO-1 in critically ill patients
Philodina haejooni Song & Lee 2022, n. sp.
No full textPhilodina haejooni n. sp. Figures 3 and 4 urn:lsid:zoobank.org:act: 52D619D8-E10B-4FA7-9993-08C7B3CD1A5D Holotype and paratypes. On permanent slides, deposited in the collection of the National Institute of Biological Resources, Incheon, Korea (holotype: NIBRIV0000862827; two paratypes: NIBRIV0000862828 and NIBRIV0000862829). Type locality. Hwansangsup gotjawal, Hangyeong-myeon, Jeju-si, Jejuteukbyeoljachi-do, Korea. GPS coordinates based on WGS84 datum 33°19’21.5”N / 126°15’48.0”E. Material. Six specimens sorted out from leaf litter, collected by Min Ok Song and Chang-Ho Lee on 12 August, 2019. Differential diagnosis. This new species is easily distinguished from its congeners by the leaf margin-shaped longitudinal ridges on trunk. The margins of these longitudinal ridges are slightly expanded, lobed, sinuate, and sometimes bluntly pointed. Even though the trunk of Philodina haejooni n. sp. is lightly granulated, the lobed and sinuate parts of the longitudinal ridges are not from the compaction of the granules on trunk, but from the slight expansion of the margins. The genus Philodina has several species/subspecies with highly granulated trunk such as P. corrugata, P. clypeata Song & Lee, 2020, P. rugosa rugosa Bryce, 1903 and its two other subspecies, P. r. coriacea Bryce, 1903 and P. r. callosa Bryce, 1903, P. scabra Milne, 1916, and P. verrucosa Song & Lee, 2020. None of these Philodina species has leaf margin-shaped longitudinal ridges on trunk like those P. haejooni n. sp. has. The other important diagnostic characteristics of this new species include the lateral expansions of cingulum as well as the extended lateral folds on each side of the pseudosegment bearing dorsal antenna in feeding. Description. No eyespots. Body lightly granulated. Rostral lamella bilobed and very short; narrower than rostrum width; with tufts of cilia posterolaterally. Rostrum round and slightly shorter than its width. Corona wider than cingulum; the ratio of corona width to cingulum width about 1.12: 1–1.13: 1. Sulcus as wide as pedicel width. Upper lip arched and bilobed medially; as high as sulcus base; much lower than trochal discs. Cingulum extended laterally; each extension short and round laterally; cingulum slightly wider than cingulum pad; the ratio of cingulum width to cingulum pad width about 1.10: 1–1.11: 1. Antenna short. Two extended lateral folds on either side of pseudosegment bearing antenna in feeding. Teeth 3/3. Pharyngeal tube much shorter than trophi length. Longitudinal ridge on trunk slightly expanded and leaf margin-shaped; margins lobed, sinuate, and sometimes bluntly pointed. Rump gradually tapering to foot; preanal pseudosegment plump posteriorly; anal pseudosegment round medially. Foot very short and with four pseudosegments; the ratio of total body length in creeping to foot length about 8.4: 1. Spurs long, finger-shaped, thin and with wide interspace; slightly plump medially; lateral margins of spurs tapering to dull and knobbed ends; interspace width slightly wider than spur length; the ratio of interspace width to spur length about 1.3: 1. Egg oval and with smooth surface. Measurements. Total length in creeping 180–194 μm. Total length in feeding 130–140 μm. Rostrum length 18 μm. Corona width 40–45 μm. Cingulum width 36–40 μm. Cingulum pad width 32–36 μm. Antenna length 14–18 μm. Greatest neck width in creeping 34–35 μm. Greatest trunk width in creeping 36–44 μm. Greatest trunk width in feeding 45–56 μm. Spur length 6–10 μm. Distribution. This new species is known only from its type locality. Etymology. This new species is named after authors’ son, Hae-Joon Lee.Published as part of Song, Min Ok & Lee, Chang-Ho, 2022, Descriptions of Philodinavus koreanus n. sp. and two new species of Philodina (Rotifera, Bdelloidea) from Korea, pp. 399-411 in Zootaxa 5129 (3) on pages 404-406, DOI: 10.11646/zootaxa.5129.3.4, http://zenodo.org/record/650119
sj-pdf-1-mrj-10.1177_00222437221130712 - Supplemental material for The Effects of Digital Textbooks on Students’ Academic Performance, Academic Interest, and Learning Skills
No full textSupplemental material, sj-pdf-1-mrj-10.1177_00222437221130712 for The Effects of Digital Textbooks on Students’ Academic Performance, Academic Interest, and Learning Skills by Stephanie Lee, Ju-Ho Lee and Youngsik Jeong in Journal of Marketing Research</p
An in-plane WSe2 p-n homojunction two-dimensional diode by laser-induced doping
No full textConventional doping schemes of Si microelectronics are inadequate for atomic-thickness two-dimensional (2D) semiconductors, which makes it challenging to construct 2D p-n homojunctions. Herein, a UV laser-assisted doping method with addressability is proposed for seamlessly building a 2D WSe2 p-n homojunction. WSe2 with ambipolar transport properties was exposed to a focused UV laser to form WOx in a self-limiting and area-selective process that induces hole doping in the underlying WSe2 via electron transfer. Different electrical behaviors, ranging from p-p to p-n in-plane homojunctions, were observed between the as-exfoliated (ambipolar) region and the UV laser-treated (p-doped) region, under the electrostatic modulation of the back-gate bias (V-BG), resulting in the multi-state rectification ratios of 895 (positive V-BG) and similar to 4 (negative V-BG). The evolution of the depletion region in the WSe2 in-plane homojunction was analyzed at different V-BG using the scanning photocurrent mapping approach, yielding a high photocurrent of 1.8 nA for positive V-BG, owing to the development of the p-n junction. Finally, a WSe2-based 2D homogeneous complementary inverter is demonstrated with a voltage gain of 1.8, thereby paving the way for next-generation atomic-thickness circuitry.N
Rhinogobius rubromaculatus Lee and Chang 1996
No full text<p> 293. <i>Rhinogobius rubromaculatus</i> Lee and Chang, 1996:31, fig. 1</p> <p>Holotype: ASIZP 56640 (39.0), Tadu River, Taichung County, Taiwan.</p> <p>Paratype: ASIZP 57271 (7, 17.0–32.2), Tsoshui tiver, Nantou County, Taiwan, 14 Apr. 1991.</p>Published as part of <i>Ho, Hsuan-Ching & Shao, Kwang-Tsao, 2011, 2957, pp. 1-74 in Zootaxa 2957</i> on page 5
A study on the synthesis of multiwall carbon nanotube by microwave-PECVD and its hydrogen storage property
No full text학위논문(박사) - 한국과학기술원 : 재료공학과, 2002.8, [ xii, 121 p. ]한국과학기술원 : 재료공학과
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