127,282 research outputs found
Replication Data and Code for: Cross-Border Technology Investments in Recession
No full textThe data and programs replicate tables from "Cross-Border Technology Investments in Recession" by Juliana Yu Sun and Huanhuan Zheng. Please see the ReadMe file for additional details
WeChat and the Chinese diaspora
No full textChinese. diaspora. Introduction. Wanning Sun & Haiqing Yu DOI: 10.4324/ 9781003154754-1 Preamble 1 A few months prior to his departure from the White House, in early August 2020, President Trump, citing national security concerns, ..
Can negative interest rates really affect option pricing? Empirical evidence from an explicitly solvable stochastic volatility model
No full textRECCHIONI, Maria Cristina; SUN, Yu; TEDESCHI, Gabriele. Can negative interest rates really affect option pricing? Empirical evidence from an explicitly solvable stochastic volatility model. Working Papers from Economics Department, Universitat Jaume I, núm. 2016/23The profound financial crisis generated by the collapse of Lehman Brothers and
the European sovereign debt crisis in 2011 have caused negative values of
government bond yields both in the U.S.A. and in the EURO area. This paper
investigates whether the use of models which allow for negative interest rates can
improve option pricing and implied volatility forecasting. This is done with
special attention to foreign exchange and index options. To this end, we carried
out an empirical analysis on the prices of call and put options on the U.S. S&P
500 index and Eurodollar futures using a generalization of the Heston model in
the stochastic interest rate framework. Specifically, the dynamics of the option’s
underlying asset is described by two factors: a stochastic variance and a stochastic
interest rate. The volatility is not allowed to be negative but the interest rate is.
Explicit formulas for the transition probability density function and moments are
derived. These formulas are used to estimate the model parameters efficiently.
Three empirical analyses are illustrated. The first two show that the use of models
which allow for negative interest rates can efficiently reproduce implied volatility
and forecast option prices (i.e., S&P index and foreign exchange options). The last
studies how the U.S. three-month government bond yield affects the U.S. S&P
500 index
Pristidia ramosa Yu, Sun & Zhang 2012
No full textPristidia ramosa Yu, Sun & Zhang, 2012 Figs 9–17 Pristidia ramosa Yu, Sun & Zhang, 2012: 45, f. 1–16. (male holotype; 6 male and 2 female paratypes from China, Jiangxi Province, Mt. Jinggang) Clubiona expansa Huang & Chen, 2012: 55, f. 15A–G. (male holotype; 1 male and 1 female paratypes from China, Taiwan Province, New Taipei City). Syn. N. Material examined. CHINA: Taiwan, New Taipei City, District Pinglin (24o55’55.78"N, 121°42′41.10"E, 210m), 19 July 2013, F. Liu and W.Gan leg., 1 male (HUBU-TW- 130177) and 1 female (HUBU-TW- 130178); Guizhou, Mt. Fanjing, Taiping village (24o55’55.78"N, 121o42’41.10"E, 634m), 24 May 2015, M. Yan and J.Li leg., 1 female (HUBU-GZ- 150249). Diagnosis. Pristidia ramosa can be easily distinguished from P. cervicornuta sp. nov. by the embolus distinctly longer, the presence of basal teeth on the RTA, RTA expanded, with a blunt tip, and by the absence of TA (Figs 13, 14). Yu, Sun & Zhang (2012: 45) highlighted the differences of this species from P. prima. Description. See Yu, Sun & Zhang (2012). Intraspecific variation. There is almost no difference between the male from Taiwan (HUBU-TW- 130177, Figs 10, 12–14) and the holotype from Jiangxi (Yu, Sun & Zhang 2012: figs 1–7, 12–14). However, some intraspecific variation is exhibited by females from different localities, mostly related to different degrees of sclerotization. The female from Taiwan (HUBU-TW- 130178, Fig. 11) is distinctly larger in size and darker in color than the paratype from Jiangxi (Yu, Sun & Zhang, 2012: fig. 8). Furthermore, in HUBU-TW- 130178, the epigynal ventral plate is more sclerotized (Fig. 15) than in the paratype (Yu, Sun & Zhang 2012: fig. 9); both spermathecae and bursae are totally transparent in HUBU-TW- 130178 (Fig. 16), while more sclerotized in the paratype (Yu, Sun & Zhang 2012: figs 10, 16). Natural history. The spiders inhabit forests in low mountain areas (210–800 m). This is in accordance with data of the type locality provided by Yu, Sun & Zhang (2012) and Huang & Chen (2012). Distribution. Mt. Jinggang in Jiangxi, Mt. Fanjing in Guizhou and New Taipei City in Taiwan, China. The present data showed the extension of the known range of this species of about 560 km to the northwest (Mt. Fanjing) and of 750 km to the southeast (Taiwan) from the type locality (Fig. 17). Remark. Although we have not examined the type specimens of C. expansa, the long filiform embolus, the expanded RTV with a subapical flange, the bell-shaped atrium, and the course of vulvar duct system shown in the original illustrations (Huang & Chen 2012, fig. 15A–G), leave no doubts on this synonymy. Huang & Chen (2012) was published in May, 2012 (day of publication not specified), while Yu, Sun & Zhang (2012) was published in May, 3, 2012. According to the article 21.3 of the International Code of Zoological Nomenclature, the publication date of Huang & Chen (2012) must be specified as May, 31, 2012. Consequently, C. expansa is here considered as a junior synonym of P. ramosa.Published as part of Yu, Hao, Zhang, Jianshuang & Chen, Jian, 2017, Taxonomy of the genus Pristidia Deeleman-Reinhold, 2001 (Araneae: Clubionidae) in China, pp. 411-418 in Zootaxa 4306 (3) on pages 413-416, DOI: 10.11646/zootaxa.4306.3.7, http://zenodo.org/record/84452
Diagnostic Analysis Of Heavy Rainfall Events Over The Yangtze River Valley During The Mei-yu Season 2020
No full textDuring the early summer rainy season of the southern China plain in 2020, series of unprecedented heavy Mei-Yu precipitation occurred over the Yangtze River Valley region accompanied by a widespread inundation. Compared with the past ten-year mean conditions (2011-2019), the Mei-Yu precipitation over the Yangtze River Valley in 2020 shows that there was an occurrence of downpour over a longer lasting period (62 days in total). By using the CFSv2 reanalysis data with 6-hourly interval (2011-2020), a low-level boundary layer jet over the north part of South China Sea is diagnosed and referred to as Marine Boundary Layer Jet (MBLJ) by previous studies (Chen et al. 2018, Tu et al. 2019). This boundary layer jet has shown its wind maximum around 925-hPa with relatively large horizontal moisture transport is confined to the boundary layer for almost the entire Mei-Yu season (from June 1st to July 31st) in 2020. The MBLJ is mainly related to the large sub-synoptic scale pressure gradients between a stronger than normal WPSH and a South-West Vortex (SWV) originating from the lee side of the Tibet Plateau (Tu et al. 2019, Tu et al. 2020). Accompanied with a relatively stronger low-level wind (>10 ms^(-1)) within the MBL During the Mei-Yu season in 2020, the MBLJ over the Northern South China Sea played a key role in transporting the low-level moisture from the subtropical ocean to the southern China plain, contributing to the heavy precipitation over the Yangtze River valley that lasted almost for the entire rainy season. In addition to the S-N moisture supply by the MBLJ, a southwesterly sub-synoptic Low-Level (SLLJ) along the Mei-Yu front was (Chen and Yu 1988) present as a result of the secondary circulation associated with the Mei-Yu frontal circulation (Chen et al., 1994). During the Mei-Yu season in 2020, the MBLJ encountered the SLLJ along with the Mei-Yu front after reaching the southern China plain. The MBLJ brings in excessive moisture from the northern South China Sea to the central China plain where the rainfall production is mainly related to the secondary circulation associated with the Mei-Yu jet/front system. Moreover, the moisture transport is dominated by the mean flow with much less contribution in the transient mode. With this favorable synergistic effect caused by both MBLJ and SLLJ together, series of unprecedented long-lasting rainfall events occurred over the Yangtze River Valley during the entire 2020 Mei-Yu season.M.S
Perspectives on Identity, Migration, and Displacement
No full textPerspectives on Identity, Migration, and Displacement -- edited by Steven Tötösy de Zepetnek, I-Chun Wang, and Hsiao-Yu Sun (Kaohsiung: National Sun Yat-sen University Press, 2010. ISBN 9789860235418 209 pages, bibliography, index) is a collection of articles about sociological and literary aspects of identity formation as a consequence of (im)migration. (Im)migration results in the problematics of assimilation and hybridity and in postcolonial scholarship, in particular, attention is paid to the concept of migration termed Creolization on the ground that cultural contact, cultural transmission, and cultural transformation result in the creation of new cultures. Copyright release by National Sun Yat-sen University to the authors 2013
The politics of fashion: perceptions of power in female clothing and ornamentation as reflected in the sixteenth-century Chinese novel Jin Ping Mei
No full textThis thesis examines issues of female power and influence in sixteenth-century China focusing on how women and their roles were perceived in the changing social environment of the mid-late Ming dynasty. Using aspects of a New Historicist approach, information from contemporary literary and historical sources are analysed alongside each other. With its emphasis on the lives of women and preoccupation with the description of material objects, the late Ming novel Jin Ping Mei forms an important element in the thesis. China in the sixteenth century saw expanding urbanisation, the emergence of a new wealthy merchant class, increasing visibility of women and a questioning of traditional morality. Fashion consciousness, as one of the most conspicuous aspects of the new material culture, is a possible indicator of these trends. Traditional Western theories contend that fashion began in the particular context of Renaissance Europe. However, this study argues that a similar fashion awareness existed in China too, and was manifested in a competitive striving for social status, in this case specifically among women. In contrast to previous studies which downplayed the impact women had on defining traditional Chinese culture, this thesis demonstrates how women and their sartorial choices began to redefine the boundaries of material culture, influencing literati discourse which, in turn, re- influenced female behaviour
FIGURES 20–21 in New Oligaphorura species (Collembola: Onychiuridae) from the forests of East Asia
No full textFIGURES 20–21. Oligaphorura kedroviensis sp. nov.: 20, dorsal chaetotaxy; 21, ventral chaetotaxy of abdomen. Scale 0.1 mm.Published as part of Sun, Xin, Shveenkova, Yu. B., Xie, Zhijing & Babenko, A. B., 2019, New Oligaphorura species (Collembola: Onychiuridae) from the forests of East Asia, pp. 256-270 in Zootaxa 4661 (2) on page 268, DOI: 10.11646/zootaxa.4661.2.2, http://zenodo.org/record/337944
Chao cai liao yong yu ya bo chang ju jiao: ge xiang yi xing hao sun cai liao yu ti du guang xue na mi bo dao guan
No full textKwok, Hui Kin = 超材料用於亞波長聚焦 : 各向異性耗損材料與梯度光學納米波導管 / 郭栩健.Thesis M.Phil. Chinese University of Hong Kong 2015.Includes bibliographical references (leaves 67-69).Abstracts also in Chinese.Title from PDF title page (viewed on 26, September, 2016).Kwok, Hui Kin = Chao cai liao yong yu ya bo chang ju jiao : ge xiang yi xing hao sun cai liao yu ti du guang xue na mi bo dao guan / Guo Xujian
Impacts of Mountain–Plains Solenoid on Diurnal Variations of Rainfalls along the Mei-Yu Front over the East China Plains
No full text Convection-permitting numerical experiments using the Weather Research and Forecasting (WRF) model are performed to examine the impact of a thermally driven mountain–plains solenoid (MPS) on the diurnal variations of precipitation and mesoscale convective vortices along the mei-yu front over the east China plains during 1–10 July 2007. The focus of the analyses is a 10-day simulation that used the 10-day average of the global analysis at 0000 UTC as the initial condition and the 10-day averages every 6 h as lateral boundary conditions (with diurnal variations only). Despite differences in the rainfall intensity and location, this idealized experiment successfully simulated the observed diurnal variation and eastward propagation of rainfall and mesoscale convective vortices along the mei-yu front. It was found that the upward branch of the MPS, along with the attendant nocturnal low-level jet, is primarily responsible for the midnight-to-early-morning rainfall enhancement along the mei-yu front. The MPS is induced by differential heating between the high mountain ranges in central China and the low-lying plains in east China. Diabatic heating from moist convection initiated and/or enhanced by the solenoid circulation subsequently leads to the formation of a mesoscale convective vortex that further organizes and amplifies moist convection while propagating eastward along the mei-yu front. The downward branch of the MPS, on the other hand, leads to the suppression of precipitation over the plains during the daytime. The impacts of this regional MPS on the rainfall diurnal variations are further attested to by another idealized WRF simulation that uses fixed lateral boundary conditions. </jats:p
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