1,443 research outputs found
D. Milstead
No full textthis report, results from the H1 and ZEUS experiments are presented on single jets, di-jets and high transverse momentum single particles in the forward region at small Bjorken-x. 2 Result
Physalaemus riograndensis Milstead 1960
No full text<i>Physalaemus riograndensis</i> Milstead, 1960 <p> We found a single call type for the species, referred to as call A. The call is composed of a single harmonic note with high fundamental frequency (<i>ca.</i> 1000 Hz). It has a general downward FM throughout the call, with an up-downward FM segment in the its first third.</p> <p> <b>Call A (Fig. 45 A–F and 42D).</b> We examined 14 recordings, a total of 31 minutes, with <i>ca</i>. 820 calls from 50 males. Only some of these calls were measured (see Table 2). Call duration varies from 0.691 to 0.835 s. The envelope of the call is variable (Fig. 45A, C, D). In most calls, the limits between the call rise, sustain, and call fall are not clear. Calls usually have a short segment with very low amplitude at the beginning of the call, separated from the rest of the call by an abrupt change in amplitude. The shape of the call rise and fall is usually exponential. The sustain is irregular, usually composed of a shallow or deep valley (<i>i.e.</i>, with a concave shape; Fig. 45D). The amplitude peak is often at around the middle or after one third of the call duration. The envelope varies from elliptic (Fig. 45A, D) to triangular (pointed right; Fig. 45C). Due to the concave shape of the sustain, the triangular shape of some calls resembles an arrow. More than 50 % of the call energy is concentrated in 27 % of the call duration around the amplitude peak. There is no PAM in the call. The call has a harmonic series (Fig. 42D). The fundamental frequency is <i>ca.</i> 1020 Hz and the first six harmonics are generally emphasized. The wave periods are regular and harmonics are clear throughout the call. The dominant frequency varies from <i>ca</i>. 950 to 1030 Hz (Fig. 42D). The first harmonic is the dominant (Fig. 42D, 45B, E, F). There is a clear shift in relative energy among bands. Although, usually, there is no shift in the dominant frequency, the higher bands get more energy towards the end of the call (Fig. 42D). Most of the call energy is between 850 and 1150 Hz (one harmonic). The call has a general downward FM (45B, E, F). Additionally, calls have an up-downward FM in the first third of the call duration, leading to arc-shaped bands in this part of the call, and a short upward FM at the end (45B, E, F). The general downward FM and the initial updownward FM result in S-shaped harmonics when considering the entire call. There is no PFM.</p>Published as part of <i>Hepp, Fábio & Pombal, José P., 2020, Review of bioacoustical traits in the genus Physalaemus Fitzinger, 1826 (Anura: Leptodactylidae: Leiuperinae), pp. 1-106 in Zootaxa 4725 (1)</i> on page 76, DOI: 10.11646/zootaxa.4725.1.1, <a href="http://zenodo.org/record/3612996">http://zenodo.org/record/3612996</a>
Metadata initiatives and emerging technologies to improve resource discovery
No full textThis paper discusses some emerging issues on metadata as a mechanism of resource discovery and its impact on precision of search results in a distributed network environment. It presents a brief account of the recent major developments related to metadata across the globe. Highlights a consistent growth of multiple metadata standards to meet the variety of needs in a hierarchy of complexity. Examines various metadata-harvesting tools and related technologies that fulfill the task implicit in a user’s search. Brings out popular standards, useful protocols, and open-source harvesters along with their intrinsic capabilities for harvesting and presenting metadata and introduces a variety of metadata services viz., OCLC’s catalogue service, UKOLN metadata editor service, OAIster harvester service, DP9 gateway service, etc. explores the underlying principles of metadata-harvesting in DSpace and web search engines. Discusses use of multiple metadata formats in DSpace archives for exposing domain-specific metadata; and the inherent mechanism for extensibility and interoperability functions. Proposes methods for creating metadata that can pursue high-precision document retrieval in dynamic collections. Also discuses semantic web technologies and use of specialized metadata for long-term management and preservation of digital objects
Searches for Higgs bosons and other new physics in scenarios beyond the standard model
No full textSearches are presented for Higgs bosons in scenarios beyond the Standard Model by the ATLAS and CMS experiments at the Large Hadron Collider. Searches for other exotic phenomena are also shown
Agricultural soil moisture experiment: 1978 Colby (Kansas) data catalog and documentation
No full textThere are no author-identified significant results in this report
Measurement of D*(+/-) meson production in jets from pp collisions at root s=7 TeV with the ATLAS detector
No full textThis paper reports a measurement of D*(+/-) meson production in jets from proton- proton collisions at a center- of- mass energy of root s = 7 TeV at the CERN Large Hadron Collider. The measurement is based on a data sample recorded with the ATLAS detector with an integrated luminosity of 0.30 pb(-1) for jets with transverse momentum between 25 and 70 GeV in the pseudorapidity range vertical bar eta vertical bar <2.5. D*(+/-) mesons found in jets are fully reconstructed in the decay chain: D*(+/-)-> D-0 pi(+), D-0 -> K-pi(+), and its charge conjugate. The production rate is found to be N(D*(+/-))/N(jet) = 0.025 +/- 0.001(stat.) +/- 0.004(syst.) for D*(+/-) mesons that carry a fraction z of the jet momentum in the range 0.3< z< 1. Monte Carlo predictions fail to describe the data at small values of z, and this is most marked at low jet transverse momentum.</p
Recent Results on Soft QCD at ATLAS
No full textThe ATLAS experiment at the Large Hadron Collider has produced a number of measurements of final state observables which are sensitive to soft processes mediated by the strong force. In this article, measurements of identified particle production () are presented as are studies of the underlying event and double parton scattering
Searches for Supersymmetry and Other Exotica at the LHC
No full textThe Large Hadron Collider (LHC) has opened up a new kinematic regime. Using high energy proton-proton collisions it is possible to search for evidence of hitherto unobserved particles and processes at TeV energy scales. This paper describes search strategies for a range of exotic phenomena proposed within supersymmetry and other theories
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