1,140 research outputs found
Foreign direct investment and China's bilateral intra-industry trade with Japan and the US
No full textThis paper analyzes dynamic changes of China's intra-industry trade with its major trading partners, Japan and the US, from 1980 to 2004. It also investigates to what extent foreign direct investment promoted intra-industry trade. The empirical results show that, while shares of China's intra-industry trade with both Japan and U.S rose substantially, its intra-industry trade with Japan has reached 35 per cent of the overall trade, considerably larger than 10 per cent with the US. Sino-Japan intra-industry trade concentrated in the electrical and machinery sectors accounted for 52 per cent and 46 per cent of overall trade respectively. On the other hand, it is in the chemical and food sectors where intra-industry trade represented a relatively large proportion of Sino-US trade, 50 per cent and 30 per cent accordingly in each sector. In addition, the analysis indicates that Japanese direct investment in China performed a significant role in enhancing intra-industry trade between Japan and China. However, it found no evidence that the US direct investment in China contributed to the growth of the bilateral intra-industry trade between the two countries.intra-industry trade; FDI; China
Meganola nanlinga Hu, Laszlo, Ronkay & Wang 2013
No full textMeganola nanlinga Hu, László, Ronkay & Wang, 2013 (Figs 21–23) Meganola nanlinga Hu, László, Ronkay & Wang, 2013: 596. Type-locality: Nanling, Guangdong Prov., China. Specimens examined. 4 males & 2 females, Yuqing county, 876 m, Zunyi, Guizhou Prov., 23–24.vii.2021, coll. Yan-qing Hu & Yong Yu. Distribution. China (Guizhou, Guangdong, Guangxi, Jiangxi, Taiwan). Remark. This is a new record from Prov. Guizhou.Published as part of Zhang, Bei-Bei & Hu, Yan-Qing, 2022, Description of a new species of Meganola Dyar, 1898 (Lepidoptera, Nolidae, Nolinae), with new records of Meganola in China, pp. 296-300 in Zootaxa 5194 (2) on pages 299-300, DOI: 10.11646/zootaxa.5194.2.10, http://zenodo.org/record/714705
Simultaneous reconstruction of shape and generalized impedance functions in electrostatic imaging
No full textDetermining the geometry and the physical nature of an inclusion within a conducting medium from voltage and current measurements on the accessible boundary of the medium can be modeled as an inverse boundary value problem for the Laplace equation subject to appropriate boundary conditions on the inclusion. We continue the investigations on the particular inverse problem with a generalized impedance condition started in Cakoni and Kress (2013 Inverse Problems 29 015005) by presenting an inverse algorithm for the simultaneous reconstruction of both the shape of the inclusion and the two impedance functions via a boundary integral equation approach. In addition to describing the reconstruction algorithm and illustrating its feasibility by numerical examples we also provide some extensions to the uniqueness results in Cakoni and Kress (2013 Inverse Problems 29 015005).AFOSR [FA9550-13-1-0199]; NSFC [91330109
Dynamics of Conjugation of Enterococcus faecalis
No full textAdditional contributors: Anushree Chatterjee, Wei-Shou Hu (faculty mentors)This project was sponsored by the University of Minnesota’s Undergraduate Research Opportunities Program (UROP).Cui, Yuqing. (2009). Dynamics of Conjugation of Enterococcus faecalis. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/59988
Spininola yuqingensis Huang & Yu & Hu 2022, sp. n.
No full textSpininola yuqingensis sp. n. (Figs 1–3) Type material. Holotype. male, Yuqing county, 876 m, Zunyi, Guizhou Prov., 23–24.vii.2021, coll. Yan-Qing Hu & Yong Yu. Paratypes. 3 males, with the same data as the holotype; 2 males, Yuqing county, 777 m, Zunyi, Guizhou Prov., 31.vii.2021, coll. Yan-Qing Hu & Yong Yu; 4 males, Yuqing county, 876 m, Zunyi, Guizhou Prov., 29.vii.2021, coll. YanQing Hu & Yong Yu. Diagnosis. The new species resembles Spininola nepali László, Ronkay & Ronkay, 2014 by the forewing patterns, but the two species can be easily distinguished by the configurations of the male genitalia. Compared with S. nepali, the new species has a slender uncus, a wide distally and long dorsal lobe of valva and a slightly sclerotized ventral lobe of valva. Spininola nepali has a short and pointed uncus, a short dorsal lobe of valva with a parallel margin distally and a short ventral lobe of valva with a strongly sclerotized and curved margin. Description. Adult (Fig. 1). Wingspan 14–17 mm. Head grayish white; antenna brown, bipectinate in male; labial palpus short, stretched forward, mostly covered with grayish scales. Thorax brown, collar gray. Abdomen brown. Forewing ground color grayish brown, costal margin brown from medial line to wing base, vein Sc black from antemedial line to wing base, terminal area pale brown; basal line undistinguished; antemedial line blackish brown; medial line poorly visible; postmedial line wavy, formed with black dots; subterminal line wavy, formed with black and short lines; terminal line blackish brown; cilia reddish brown. Hindwing unicolorous, grayish brown; discal spot gray. Male genitalia (Figs 2 & 3). Uncus slender, pointed at apex, almost as long as the spines located at top of ventral lobe of valva; tegumen thin, about 3x as long as uncus; valva divided at base; dorsal lobe broad distally, slender at base, two thirds sclerotized at costal margin; ventral lobe slightly sclerotized with parallel margin, a spine located at apex; harpe slender, S-shaped, sclerotized; sacculus 1/3x as long as the ventral lobe of valva; saccus small and V-shaped. Aedeagus long, slightly twisted; vesica without cornuti; coecum almost 1/5 × as long as aedeagus. Female. Unknown. Distribution. China (Guizhou). Etymology. The species name is derived from the name of the type-locality.Published as part of Huang, Zhen-Fu, Yu, Yong & Hu, Yan-Qing, 2022, Description of a new species of Spininola László, Ronkay & Witt, 2010 (Lepidoptera, Nolidae, Nolinae), with new records of Spininola in China, pp. 598-600 in Zootaxa 5195 (6) on page 598, DOI: 10.11646/zootaxa.5195.6.8, http://zenodo.org/record/722399
Meganola yuqingensis Zhang & Hu 2022, sp. n.
No full textMeganola yuqingensis sp. n. (Figs 1–3) Type material. Holotype: male, Yuqing county, 876 m, Zunyi, Guizhou Prov., 23–24.vii.2021, coll. Yan-qing Hu & Yong Yu. Paratype. 1 male, Yuqing county, 876 m, Zunyi, Guizhou Prov., 29.vii.2021, coll. Yan-qing Hu & Yong Yu. Diagnosis. The new species resembles Meganola strigulosa (Staudinger, 1887) (Figs 4–6) by the forewing patterns and the configurations of the male genitalia. Compared with M. strigulosa, the new species has a more inclined postmedial line after the cell area and a distinctly black subterminal line. M. strigulosa has a straighter postmedial line after the cell area and a fuzzy and blackish brown subterminal line. In the male genitalia, the new species has a thick harpe with the blunt section apically and a cornutus on vesica. M. strigulosa has a thin harpe with the sharped section apically and vesica without cornuti. Description. Adult (Fig. 1). Wingspan 13–14 mm. Head grayish brown; antenna brown, bipectinate in male; filiform in female, labial palps short, covered with grayish brown scales. Thorax brown. Collar grayish brown. Abdomen grayish brown. Forewing ground color pale gray, vein Sc black from wing base to antemedial line, costal margin mostly brown with black patches, medial area with black area, terminal area mostly grayish brown; basal line undistinguished; antemedial line blackish brown; medial line poorly visible; postmedial line blackish brown, arcuate above vein M 2, incurved to inner margin below vein M 2; subterminal line black, wavy; cilia blackish brown. Hind wing pale grayish brown; cilia grayish brown. Male genitalia. (Figs 2 & 3). Uncus clavate, slightly acute apically, almost 3x as long as harpe; tegumen medium size; valva long, shrink medially, costal margin slightly sclerotized, cuculus wide; harpe finger-shaped, round at apex, with several protuberances at dorsal margin; saccus V-shaped. Aedeagus cylindrical, medium long; vesica with a cornutus. Female. Unknown. Distribution. China (Guizhou). Etymology. The species name is derived from the name of the type-locality.Published as part of Zhang, Bei-Bei & Hu, Yan-Qing, 2022, Description of a new species of Meganola Dyar, 1898 (Lepidoptera, Nolidae, Nolinae), with new records of Meganola in China, pp. 296-300 in Zootaxa 5194 (2) on pages 296-297, DOI: 10.11646/zootaxa.5194.2.10, http://zenodo.org/record/714705
New Characterizations in Turnstile Streams with Applications
No full textRecently, [Li, Nguyen, Woodruff, STOC 2014] showed any 1-pass constant probability streaming algorithm for computing a relation f on a vector x in {-m, -(m-1), ..., m}^n presented in the turnstile data stream model can be implemented by maintaining a linear sketch Ax mod q, where A is an r times n integer matrix and q = (q_1, ..., q_r) is a vector of positive integers. The space complexity of maintaining Ax mod q, not including the random bits used for sampling A and q, matches the space of the optimal algorithm.
We give multiple strengthenings of this reduction, together with new applications. In particular, we show how to remove the following shortcomings of their reduction:
1. The Box Constraint. Their reduction applies only to algorithms that must be correct even if x_{infinity} = max_{i in [n]} |x_i| is allowed to be much larger than m at intermediate points in the stream, provided that x is in {-m, -(m-1), ..., m}^n at the end of the stream. We give a condition under which the optimal algorithm is a linear sketch even if it works only when promised that x is in {-m, -(m-1), ..., m}^n at all points in the stream. Using this, we show the first super-constant Omega(log m) bits lower bound for the problem of maintaining a counter up to an additive epsilon*m error in a turnstile stream, where epsilon is any constant in (0, 1/2). Previous lower bounds are based on communication complexity and are only for relative error approximation; interestingly, we do not know how to prove our result using communication complexity. More generally, we show the first super-constant Omega(log(m)) lower bound for additive approximation of l_p-norms; this bound is tight for p in [1, 2].
2. Negative Coordinates. Their reduction allows x_i to be negative while processing the stream. We show an equivalence between 1-pass algorithms and linear sketches Ax mod q in dynamic graph streams, or more generally, the strict turnstile model, in which for all i in [n], x_i is nonnegative at all points in the stream. Combined with [Assadi, Khanna, Li, Yaroslavtsev, SODA 2016], this resolves the 1-pass space complexity of approximating the maximum matching in a dynamic graph stream, answering a question in that work.
3. 1-Pass Restriction. Their reduction only applies to 1-pass data stream algorithms in the turnstile model, while there exist algorithms for heavy hitters and for low rank approximation which provably do better with multiple passes. We extend the reduction to algorithms which make any number of passes, showing the optimal algorithm is to choose a new linear sketch at the beginning of each pass, based on the output of previous passes
Nola quadriguttula Inoue 2000
No full textNola quadriguttula Inoue, 2000 (Figs 7–9) Nola quadriguttula Inoue, 2000: 251. Type-locality. Taiwan. Specimen examined. 1 male, Yuqing county, 876 m, Zunyi, Guizhou Prov., 23–24.vii.2021, leg. Yanqing Hu & Yong Yu. Distribution. China (Guizhou, Taiwan) (Inoue 2000). Remark. The species is a new record from mainland China.Published as part of Chen, Zhe-Jing, Zhang, Bei-Bei & Hu, Yan-Qing, 2022, New records of the genus Nola Leach, 1815 (Lepidoptera, Nolidae, Nolinae) from China, with description of a new species, pp. 245-250 in Zootaxa 5124 (2) on page 246, DOI: 10.11646/zootaxa.5124.2.10, http://zenodo.org/record/640485
Cosmocomoidea atra Aishan & Triapitsyn & Xu & Lin & Hu 2016, s.l.
No full textCosmocomoidea atra (Foerster, 1841) s.l. (Figs 1–4) Gonatocerus ater Foerster 1841: 45. Type locality: Aachen, North Rhine-Westphalia, Germany. Gonatocerus (Cosmocomoidea) ater Foerster s.str. and s.l.: Triapitsyn 2013a: 119 –137 (taxonomic history, type information, lectotype designation, redescription, distribution, discussion); Triapitsyn 2013b: 214 (record from Canada). Cosmocomoidea atra (Förster): Huber 2015: 17 (list). Material examined. CHINA: FUJIAN: Fuzhou, 29.v.1999, M. Xu (Xu Mei) [3 ♀, FAFU]. Jiangle, 7.x.1991, N.- q. Lin (Lin Nai-quan) [4 ♀, FAFU]. GUANGXI, Xiangping, 25.v.1986, Y. Tang (Tang Yuqing) [2 ♀, FAFU]. HUBEI, Xuanen, 5.viii.1989, D. Huang (Huang Dawei) [1 ♀, FAFU]. SHAANXI, Taibaishan, 3.ix.1999, N.-q. Lin [1 ♀, FAFU]. XINJIANG: Shihezi, 12.vii.2001, H.-y. Hu (Hu Hong-ying) [4 ♀, ICXU]; 9.viii.2014, H.-y. Hu [1 ♀, ICXU]. Urumqi, 25.vii.2001, W. Cui (Cui Weidong) [1 ♀, ICXU]. Wusu, 17.vii.2001, H.-y. Hu [3 ♀, ICXU]. Xinyuan, 7.viii.1997, D. Ma (Ma Deying) [2 ♀, ICXU]. Yanqi, 7.viii.2001, H.-y. Hu [3 ♀, ICXU]. YUNNAN, Yongsheng, 8.vii.1984, C. Li (Li Changfang) [1 ♀, FAFU]. Redescription. FEMALE. Body length 960–1150 µm. Body and antenna mostly dark brown, legs light to dark brown. Antenna (Fig. 1) with radicle 0.2–0.3× total length of scape, rest of scape 2.35–3.45× as long as wide; pedicel much longer than F1; F1 and F2 subequal in length and the shortest funicle segments, F3 slightly longer than F4, F4 shorter than the following funicle segments, F5–F8 more or less subequal in length; mps on F3 (1), F4 (1), F5 (2), F6 (0 [or 1 on one antenna]), F7 (2) and F8 (2). Clava with 8 mps, 2.3–3.5× as long as wide. Mesosoma slightly shorter than metasoma. Propodeum (Fig. 2) usually with complete submedian carinae narrowing anteriorly and usually joining together at anterior margin of propodeum but sometimes fading at dorsellum. Fore wing (Fig. 3) 2.5–2.7× as long as wide; longest marginal seta 0.1–0.2× maximum wing width; disc with a slight brownish tinge and bare behind venation except for 3 or more setae behind stigmal vein, and densely setose elsewhere. Hind wing 13.6–17.5× as long as wide; disc unevenly setose, with a slight brownish tinge; longest marginal seta 1.6–1.8× maximum wing width. Ovipositor (Fig. 4) occupying 0.9–1.0× length of gaster, not or at most barely exserted beyond the apex of gaster, 1.1–1.5× as long as mesotibia. MALE. Unknown from China but known from other countries (Triapitsyn 2013a). Distribution. For C. atra s.l., Holarctic and Oriental (Zeya & Hayat 1995; Triapitsyn 2013a); China (new record, both Palearctic and Oriental parts). Hosts. Unknown for C. atra s.str. but see host records and discussion in Triapitsyn (2013a) for C. atra s.l. Comments. We identify specimens from China as C. atra s. l. because they do not exactly agree with the lectotype in the shape of the propodeal carinae but fit Matthews’ (1986) and Zeya & Hayat’s (1995) concepts of the species (Triapitsyn 2013a).Published as part of Aishan, Zhulidezi, Triapitsyn, Serguei V., Xu, Mei, Lin, Nai-Quan & Hu, Hong-Ying, 2016, Review of Cosmocomoidea (Hymenoptera: Mymaridae) from China, with descriptions of two new species, pp. 525-535 in Zootaxa 4085 (4) on pages 527-528, DOI: 10.11646/zootaxa.4085.4.4, http://zenodo.org/record/105275
The Association of Waist Circumference With Functional Mobility Among Adults With Obesity and Knee Osteoarthritis
No full textAbstract
Date Presented 3/30/2017
We examined to what extent high waist circumference was linked with decreased functional mobility over 4 yr in adults with knee osteoarthritis (OA). Measuring waist circumference may better stratify the risk of decreased functional mobility among adults with obesity and knee OA.
Primary Author and Speaker: Simone Gill
Contributing Authors: Gregory E. Hicks, Yuqing Zhang, Jingbo Niu, Caroline M. Apovian, Daniel K. White</jats:p
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