46,853 research outputs found
Bijektioner mellan k-Shi arrangemang, k-parkeringsfunktioner och k-parkeringsgrafer
No full textThis thesis is about three combinatorial concepts and their relations: One concept is the k-Shi arrangement (also called extended Shi-arrangement), which is the set of all hyperplanes in R^n of the form x_i-x_j=-k+1,-k+2,...,k for 0<i<j<n+1. The second concept is a k-parking function, that is a sequence (x_1,x_2,...,x_n) of positive integers that, when rearranged from smallest to largest, satisfies x_i< 2+k(i-1). In 1996, Pak and Stanley gave a bijection from the regions of the n-dimensional k-Shi arrangement to the k-parking functions of length n, but they could not describe the inverse. Athanasiadis and Linusson found a different bijection in 1999, where they were able to specify explicitly both directions. A new approach was given by Beck et al. (2015) who gave a bijection from the 1-parking functions, respectively the regions of the 1-Shi-Arrangement to a subset of the class of mixed graphs (i.e. graphs that could have directed as well as undirected edges) which they called parking graphs. In this thesis we define k-parking graphs and use them to extend Beck's bijections to k-Shi arrangements and k-parking functions. This gives an explicit description of the inverse of the Pak-Stanley bijection.Denna masteruppsats handlar om tre kombinatoriska koncept och deras samband: För det första, k-Shi arrangemanget (också kallad utvidgat Shi arrangemang), som är mängden av alla hyperplan i R^n av formen x_i-x_j=-k+1,-k+2,...,k för 0<i<j<n+1. För det andra, k-parkeringsfunktionerna, som är sekvenser (x_1,x_2,...,x_n) i Z^n_{>0} som uppfyller x_i<2+k(i-1) när de ordnas i växande ordningsföljd. Pak och Stanley angav 1996 en bijektion från områdena av n-dimensionell k-Shi arrangemanget till k-parkeringsfunktionerna av längd n, men de kunde inte beskriva inversen. Athanasiadis och Linusson upptäckte en annan bijektion i 1999, och kunde uttryckligen ange båda riktningar. En ny idé angavs av Beck et al. (2015) som hittade en bijektion från å ena sidan 1-parkeringsfunktionerna och å andra sidan områdena av 1-Shi arrangemanget till en delmängd av mängden av mixade grafer (grafer som kan ha riktade såväl som oriktade kanter) som de kallade parkeringsgrafer. I denna masteruppsats definierar vi k-parkeringsgrafer och använder dem för att utvidga Beck's bijektioner till k-Shi arrangemanget och k-parkeringsfunktionerna. Detta resulterar i en uttrycklig beskrivning av inversen av Pak-Stanley bijektionen
(Na + +K + )-adenosinetriphosphatase in the brain of Shiverer (Shi/Shi) mice
No full textThe myelin-deficient Shiverer (Shi/Shi) mutant mouse may be a useful model in assessing the dependence of brain (Na + +K + )-ATPase concentration and composition on myelin membrane formation. Brain microsomal membranes from age-matched control (+/+) and Shiverer (Shi/Shi) mice were fractionated by differential centrifugation and sucrose gradient sedimentation. No reduction in (Na + +K + )-ATPase specific activity was measured in whole homogenates, high-and low-speed fractions or gradient fractions from brains of Shi/Shi mice as compared to those of +/+ mice. In addition, sodium dodecylsulfatepolyacrylamide gel electrophoresis (SDS-PAGE) and immunoblotting with antisera specific for mouse brain (Na + +K + )-ATPase revealed no significant difference in catalytic subunit composition between fractions of +/+ and Shi/Shi brains. The similar results obtained for both +/+ and myelin-deficient Shi/Shi mice suggest that myelin contributes little to total brain (Na + +K + )-ATPase.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/45404/1/11064_2004_Article_BF00971708.pd
Mr Hiroyuki Miura, Sakai shi shi (Histoire de la ville de Sakai)
No full textAsakawa K. Mr Hiroyuki Miura, Sakai shi shi (Histoire de la ville de Sakai). In: Annales d'histoire économique et sociale. 3ᵉ année, N. 11, 1931. pp. 458-460
Complete genome sequence of a sub-subgenotype 2.1i isolate of classical swine fever virus from China
No full textCitation: Zhang, B., Mi, S., Bao, F., Guo, H., Tu, C., Shi, J., & Gong, W. (2017). Complete genome sequence of a sub-subgenotype 2.1i isolate of classical swine fever virus from China. Genome Announcements, 5(14). doi:10.1128/genomeA.00127-17The complete genome sequence of a sub-subgenotype 2.1i isolate of classical swine fever virus (CSFV), GD317/2011, was determined. Notably, GD317/2011 is distant from the sub-subgenotype 2.1b isolate HEBZ at genes of Erns, E1, E2, P7, NS2, NS5A and the 3=-nontranslated region (3=-NTR) but is closely related to that at genes of Npro, Core, NS3, NS4A, NS4B, and NS5B. © 2017 Zhang et al
Robust finite-time fuzzy H∞ control for uncertain time-delay systems with stochastic jumps
No full textLink to a related website: https://re.public.polimi.it/bitstream/11311/1028731/2/Robust%20finite-time%20fuzzy%20H%e2%88%9e%20control%20_11311-1028731_Karimi.pdf, Open Access via UnpaywallAbstract not availableYingqi Zhang, Peng Shi, Sing Kiong Nguang, Hamid Reza Karimi, Ramesh K.Agarwa
Comparison of the distribution of Na+, K+-ATPase and myelin-associated glycoprotein (MAG) in the optic nerve, spinal cord and trigeminal ganglion of shiverer (shi/shi) and control (+/+) mice
No full textNa+,K+ATPase and myelin-associated glycoprotein (MAG) were studied by immunocytochemistry on paraffin sections of the spinal cord, optic nerve and trigeminal ganglion of adult control (+/+) and CNS myelin-deficient shiverer (shi/shi) mice. Immunostaining for Na+,K+-ATPase outlined the periphery of nerve fibers in the spinal cord white matter, optic nerve and trigeminal ganglion of +/+ and shi/shi mice. Immunostaining for Na+,K+-ATPase appeared somewhat denser in the optic nerve and spinal cord lateral funiculi of shi/shi than in +/+ mice. In addition, immunostaining for Na+,K+-ATPase was demonstrated at the plasmalemmanof presumed satellite cells situated at the periphery of ganglion cell bodies in the trigeminal ganglion of both species of mice. Immunostaining for MAG was localized along the periphery of nerve fibers in the spinal cord funiculi (with little immunostaining within gray horns), optic nerve and trigeminal ganglion of both +/+ and shi/shi mice. The major differences between shi/shi and +/+ mice were that the number of MAG-immunostained nerve fibers was greatly reduced in the spinal cord funiculi and the density of immunostaining was slightly increased in the optic nerve of shi/shi mice. The numbers of MAG-immunostained nerve fibers in trigeminal ganglion were similar in both species. Also, the cytoplasm of some oligodendrocyte-like cell was found densely immunostained for MAG in the spinal cord and optic nerve of shi/shi mice, but not of +/+ mice. This light microscopic study provides evidence that the defective shiverer gene leads to a decrease in MAG deposition and to aggregations of MAG-like material within perikarya of oligodendrocyte-like cells in regions of the CNS.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/26641/1/0000183.pd
Baetiella spathae Shi & Tong 2015
No full textBaetiella spathae Shi & Tong, 2015 (Figs 76–80) Material examined. 1 larva, INDIA, Arunachal Pradesh, Papumpare, district, Longding, Laporiang, Pare stream, 28.392 N, 93.825 E, 819 m, 23.ix.2018, coll. B. Sinha (Reg. No. I/E/403). Diagnosis. Baetiella spathae is closely related to B. armata Braasch, 1983 from Nepal as both present a single posteriomedian protuberance on terga I–IX. However, Baetiella spathae can be differentiated from that species based on the following combination of characters: (i) antennal scape and pedicel with blunt scale-like setae; (ii) terminal segment of maxillary palpus with a pronounced tip; (iii) 2nd segment of labial palpus almost fused with terminal segment and without inner-apical lobe, terminal segment asymmetrically conical with a small tip at apex; (iv) posterior margin of sterna V–IX with close-set long spatulate setae (Figs 79–80); and (v) inner margin of paraproct with a row of 5–6 oval scale-like setae (Shi & Tong 2015). Distribution. China (Tibet) and India (Arunachal Pradesh) (Fig. 81). Remarks. Shi and Tong (2015) described Baetiella spathae based on the larvae from Tibet, China. Our new data represent the first report of this species from India.Published as part of Vasanth, M., Selvakumar, C., Subramanian, K. A., Sivaramakrishnan, K. G. & Sinha, Bikramjit, 2020, New record of the genus Baetiella Uéno, 1931 (Ephemeroptera: Baetidae) from India with description of a new species and new records for five species, pp. 563-578 in Zootaxa 4763 (4) on page 576, DOI: 10.11646/zootaxa.4763.4.6, http://zenodo.org/record/376216
Mr Yosaburo Takekoshi, Ni-hon Kei-zai shi (Histoire économique du Japon)
No full textAsakawa K. Mr Yosaburo Takekoshi, Ni-hon Kei-zai shi (Histoire économique du Japon). In: Annales d'histoire économique et sociale. 3ᵉ année, N. 11, 1931. pp. 454-457
Harmonizing Biodiesel Fuel Standards in East Asia: Current Status, Challenges and Way Forward
No full textAbstract: This paper discusses the development of and policy towards biodiesel fuel (BDF) in the East Asia Summit (EAS) Region (hereafter East Asia), with a focus on activities related to harmonizing BDF standards. It finds that the EAS countries have actively promoted the development of BDF for a variety of reasons. To minimize problems with engines arising from the use of BDF, most EAS countries have established their national BDF standards. However, these diverse standards cause barriers for BDF trade and act against the regional interest in maximizing benefits from BDF production and utilization. Therefore, the EAS policy makers decided to harmonize BDF standards, and a regional benchmark standard has been published. Through a comparative review of existing national standards against the benchmark, it finds that the harmonization is beneficial economically and environmentally, and is technically feasible but practically stalled due to the lack of political determination. Therefore, among a few policy implications, the key message to deliver is a call for political determination to implement the harmonization in the EAS region. Since harmonization of BDF standards has been tried in other regions, the findings of this paper may supplement the literature, enhance understanding of the EAS case, and provide lessons and implications that may be helpful in advancing similar harmonization elsewhere.
Constant Approximation for Capacitated k-Median with (1+epsilon)-Capacity Violation
No full textWe study the Capacitated k-Median problem for which existing constant-factor approximation algorithms are all pseudo-approximations that violate either the capacities or the upper bound k on the number of open facilities. Using the natural LP relaxation for the problem, one can only hope to get the violation factor down to 2. Li [SODA'16] introduced a novel LP to go beyond the limit of 2 and gave a constant-factor approximation algorithm that opens (1 + epsilon)*k facilities.
We use the configuration LP of Li [SODA'16] to give a constant-factor approximation for the Capacitated k-Median problem in a seemingly harder configuration: we violate only the capacities by 1 + epsilon. This result settles the problem as far as pseudo-approximation algorithms are concerned
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