151,108 research outputs found
Testing Hu-Sawicki f(R) gravity with the effective field theory approach
No full textWe show how to fully map a specific model of modified gravity into the Einstein-Boltzmann solver eftcamb. This approach consists in few steps and allows to obtain the cosmological phenomenology of a model with minimal effort. We discuss all these steps, from the solution of the dynamical equations for the cosmological background of the model to the use of the mapping relations to cast the model into the effective field theory language and use the latter to solve for perturbations. We choose the Hu-Sawicki f(R) model of gravity as our working example. After solving the background and performing the mapping, we interface the algorithm with eftcamb and take advantage of the effective field theory framework to integrate the full dynamics of linear perturbations, returning all quantities needed to accurately compare the model with observations. We discuss some observational signatures of this model, focusing on the linear growth of cosmic structures. In particular we present the behaviour of fσ8and EG that, unlike the Λ cold dark matter (ΛCDM) scenario, are generally scale dependent in addition to redshift dependent. Finally, we study the observational implications of the model by comparing its cosmological predictions to the Planck 2015 data, including cosmic microwave background lensing, the WiggleZ galaxy survey and the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS), weak-lensing survey measurements. We find that while WiggleZ data favour a non-vanishing value of the Hu-Sawicki model parameter, log10(-fR0, and consequently a large value of σ8, CFHTLenS drags the estimate of log10(-fR0back to the ΛCDM limit
Lysimachia nutantiflora F. H. Chen & C. M. Hu 1979
No full textLysimachia nutantiflora F.H.Chen & C.M.Hu (1979: 28) (Fig. 4) References: — Hu & Kelso (1996: 53). Habitat and phenology: —Evergreen forests; 800–1100 m. Flowering in May–June, fruiting unknown. Distribution: — China (SW Guangxi), Vietnam (Gia Lai: Kon Chu Rang Nature Reserve). Studied specimens: — VIETNAM. Gia Lai province: K’Bang district, Son Lang municipality, Kon Chu Rang Nature Reserve, 29 km ESE of Mang Den town, forest, near waterfall, N 14°31’05’’ E 108°32’50’’, 1000 m, 01 June 2016, M. S . Nuraliev 1624 (IBSC; MW: MW0754511). Notes. Lysimachia nutantiflora is described as having an elongate several- to many-flowered terminal raceme, which is an important character for identification of this species (Hu & Kelso 1996). However, the flower-subtending bracts of L. nutantiflora are leaf-like, with the lower bracts differing from the leaves only in being twice smaller (sometimes even insignificantly smaller, as seen in the Vietnamese specimen). Thus, L. nutantiflora shows an intermediate morphology between a terminal raceme and solitary flowers in axils of the upper leaves.Published as part of Nuraliev, Maxim S., Toyama, Hironori, Hu, Chi-Ming, Luo, Shi-Xiao, Lyskov, Dmitry F., Kuznetsov, Andrey N., Kuznetsova, Svetlana P., Quang, Bui Hong, Binh, Tran Duc & Hoan, Duong Thi, 2022, Three new national records from Kon Chu Rang Nature Reserve, Vietnam: Euphorbia bokorensis, Glochidion geoffrayi and Lysimachia nutantiflora, pp. 73-82 in Phytotaxa 574 (1) on pages 79-80, DOI: 10.11646/phytotaxa.574.1.4, http://zenodo.org/record/735981
Performance Evaluation of Distributed-Antenna Communications Systems Using Beam-Hopping
No full textDigital beamforming (DBF) techniques are capable of improving the performance of communications systems significantly. However, if the transmitted signals are conflicted with strong interference, especially, in the direction of the transmitted beams , these directional jamming signals will severely degrade the system performance. In order to efficiently mitigate the interference of the directional jammers, in this contribution a beam-hopping (BH) communications scheme is proposed. In the proposed BH communications scheme, only one pair of the beams is used for transmission and it hops from one to the next according to an assigned BH pattern. In this contribution a range of expressions in terms of the average SINR performance have been derived, when both the uplink and downlink are considered. The average SINR performance of the proposed BH scheme and that of the conventional single-beam (SB) as well as multiple-beam (MB) assisted beam-processing schemes have been investigated. Our analysis and results show that the proposed BH scheme is capable of efficiently combating the directional jamming, with the aid of utilizing the directional gain of the beams generated by both the transmitter and the receiver. Furthermore, the BH scheme is capable of reducing the intercept probability of the communications. Therefore, the proposed BH scheme is suitable for communications, when several distributed antenna arrays are available around a mobile
Flow behaviour and aeroacoustic characteristics of a simplified high-speed train bogie
No full textData set for the following publication:
Zhu, Jianyue, Hu, Zhiwei and Thompson, D. J. Flow behaviour and aeroacoustic characteristics of a simplified high-speed train bogie. Proc. IMechE Part F: J. Rail and Rapid Transit (doi:10.1177/0954409715605129).</span
Dataset for: Effect of different typical high speed train pantograph recess configurations on aerodynamic noise
No full textDataset supporting: Kim, H., Hu, Z., & Thompson, D. (2020). Effect of different typical high speed train pantograph recess configurations on aerodynamic noise.
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit.</span
Symbolwelten in ethnischen gemischten Räumen: Empirische Befunde aus Masuren
No full textMai U. Symbolwelten in ethnischen gemischten Räumen: Empirische Befunde aus Masuren. In: Kemper F-J, Gans P, eds. Ethnische Minoritäten in Europa und Amerika - Geographische Perspektiven und empirische Fallstudien. Berliner Geographische Arbeiten. Vol 86. Berlin: HU Berlin, Geographisches Inst.; 1998: 119-132
O Projeto ético-político na produção de conhecimentos do serviço social: uma análise no hospital universitário - HU
No full textTCC (graduação) - Universidade Federal de Santa Catarina, Centro Sócio Econômico, Curso de Serviço Social.O presente Trabalho de Conclusão de Curso tem como objeto de estudo investigar se as produções dos TCCs do Serviço Social do HU estão em conformidade com o projeto éticopolítico profissional e os fundamentos do SUS. Para a realização do trabalho utilizou-se a pesquisa bibliográfica, com o objetivo de coletar dados e analisar o conteúdo, visando conhecer o que a produção dos acadêmicos/pesquisadores reflete em relação ao projeto éticopolítico profissional e ao SUS. Foi feito um levantamento de todos os TCCs em Serviço Social realizados no HU, posteriormente estes trabalhos foram sistematizados por período, setor de atuação do Serviço Social no HU e por temas. Definiu-se como amostra de pesquisa os TCCs elaborados na Maternidade do HU. Estes abordavam os temas: Auxílio Natalidade, gravidez de alto risco, aborto por anencefalia, planejamento familiar, projeto de extensão # organizações da sociedade civil e prematuridade, descritos no presente trabalho. Por fim, fezse uma análise destes temas em relação a quais elementos do projeto ético-político estavam presentes nos TCC
Neuronal Nuclear Autoantibodies, Type 1 (Hu)
No full textAntineuronal nuclear autoantibody type 1 (Hu) was initially described in two patients with sensory neuronopathy (SN) and small cell lung carcinoma (SCLC). Hu antibodies (Hu-ab) recognize nuclear antigens called Hu, which are members of a family of human neuronal ribonucleic acid (RNA)-binding proteins probably necessary for development and maintenance of the neuronal phenotype through the control of the expression of multiple neuronal genes. Hu antigens are 35-40-kDa proteins mostly expressed by the nuclei of neurons of the central nervous system (CNS) and peripheral nervous system and by SCLC cells. Hu-ab is a polyclonal, complement-fixing immunoglobulin (Ig)G. It is present in the serum and cerebrospinal fluid of patients with particular types of paraneoplastic neurologic syndromes (PNS) and SCLC. It is detected by immunohistochemistry on brain sections and confirmed by immunoblot of purified antigen (HuD). Normal subjects are seronegative. Hu-ab can be detected at low titer in the sera of about 15% of patients with SCLC in absence of a specific neurologic syndrome. High titers are restricted to patients with PNS, almost always associated with SCLC and less with other tumor types. Hu-ab have a specificity of 99% and a sensitivity of 82% in detecting PNS (sensitivity changes for different PNS)
Lamproptera paracurius Hu, Zhang & Cotton 2014
No full text<p> <b> 12. <i>Lamproptera paracurius</i> Hu, Zhang & Cotton, 2014</b> </p> <p> <i>Lamproptera paracurius</i> Hu, Zhang & Cotton, 2014; Zootaxa, 3786: 472, f. 1–2; TL: ‘ Dongchuan, N. E. Yunnan, China’.</p> <p> <b>Distribution:</b> found in the river valley and adjacent streams running into Jinsha (upper Yangtze) River between Hutiaoxia and Shuifu/Yibin of Yunnan and Sichuan.</p>Published as part of <i>Hu, Shao-Ji, Cotton, Adam M., Lamas, Gerardo, Duan, Kuang & Zhang, Xin, 2023, Checklist of Yunnan Papilionidae (Lepidoptera: Papilionoidea) with nomenclatural notes and descriptions of new subspecies, pp. 1-69 in Zootaxa 5362 (1)</i> on page 16, DOI: 10.11646/zootaxa.5362.1.1, <a href="http://zenodo.org/record/10149411">http://zenodo.org/record/10149411</a>
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