31,832 research outputs found
Forecasting directional movement of Forex data using LSTM with technical and macroeconomic indicators
No full textForex (foreign exchange) is a special financial market that entails both high risks and high profit opportunities for traders. It is also a very simple market since traders can profit by just predicting the direction of the exchange rate between two currencies. However, incorrect predictions in Forex may cause much higher losses than in other typical financial markets. The direction prediction requirement makes the problem quite different from other typical time-series forecasting problems. In this work, we used a popular deep learning tool called “long short-term memory” (LSTM), which has been shown to be very effective in many time-series forecasting problems, to make direction predictions in Forex. We utilized two different data sets—namely, macroeconomic data and technical indicator data—since in the financial world, fundamental and technical analysis are two main techniques, and they use those two data sets, respectively. Our proposed hybrid model, which combines two separate LSTMs corresponding to these two data sets, was found to be quite successful in experiments using real data
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
A 2 h periodic variation in the low-mass X-ray binary Ser X-1
No full textSpectroscopy of the low-mass X-ray binary Ser X-1 using the Gran Telescopio Canarias have revealed a ?2 h periodic variability that is present in the three strongest emission lines. We tentatively interpret this variability as due to orbital motion, making it the first indication of the orbital period of Ser X-1. Together with the fact that the emission lines are remarkably narrow, but still resolved, we show that a main-sequence K dwarf together with a canonical 1.4 M? neutron star gives a good description of the system. In this scenario, the most likely place for the emission lines to arise is the accretion disc, instead of a localized region in the binary (such as the irradiated surface or the stream-impact point), and their narrowness is due instead to the low inclination (?10°) of Ser X-1
Correlation of <i>Ab-</i>, h- and w-indices with the percentage of credit earned as primary author.
No full text<p>The correlation of <i>Ab-</i>, h- and w-indices to the percentage of credit earned as the primary author of ten individuals randomly chosen from top-20 highly cited authors in the field of Molecular Biology & Genetics of the year 2010 (data source: Thomson Reuters Essential Science IndicatorsSM).</p
A deuterium NMR study of molecular dynamics and geometry in two classes of onium salts:(CH3) 3E+ X-and C6H5M (CH3) 3+ I
No full textDeuterium NMR measurements are reported for two types of onium salts: (CH3)3E+I-, where E = O (counterion is BF4-), S, Se, or Te, and C6H5M(CH3)3+I-, where M = N, P, or As. Within each class of compounds the activation energy for rotation of the trimethyl groups about the C3' axis increases with increasing size of the central atom. In the first class of compounds the C-E-C bond angle decreases with the size of the atom E. In addition the magnitude of the quadrupolar coupling constant, chi, varies with E, ranging from 160 kHz for E = O to 190 kHz for E = Te. This is in qualitative agreement with molecular orbital calculations of the electric field gradients. At low temperatures the H-2 NMR spectrum of C6H5N(CH3)3+I- Can only be rationalized with a model in which trimethyl rotation is faster than methyl rotation. The H-2 NMR of ring (predominantly ortho and para)-deuterated C6H5N(CH3)3+I- is consistent with rapid n-site (n greater-than-or-equal-to 3) rotation of the phenyl ring above 390 K. Below 390 K spectra characteristic of two-site, 180-degrees, flips of the phenyl ring are observed. Below 280 K the motion of the phenyl ring is in the rigid lattice limit.PT: J; CR: COLLINS MJ, 1988, J AM CHEM SOC, V110, P8583 DAVIS JH, 1976, CHEM PHYS LETT, V42, P390 DAVIS JH, 1991, ISOTOPES PHYSICAL BI, V3 EINSTEIN F, 1967, J CHEM SOC A, P2018 FECHER G, 1986, BER BUNSEN PHYS CHEM, V90, P10 FISCH MJ, 1990, GAUSSIAN 90 FURUKAWA Y, 1989, Z NATURFORSCH A, V44, P112 GREENFIELD MS, 1987, J MAGN RESON, V72, P89 GRIFFIN RG, 1981, METHOD ENZYMOL, V72, P108 GRUWEL MLH, 1990, Z NATURFORSCH A, V45, P55 HAYS GR, 1978, THESIS U E ANGLIA HIROKAWA K, 1988, Z NATURFORSCH A, V43, P187 HOPE H, 1966, ACTA CRYSTALLOGR, V20, P610 IKEDA R, 1989, J PHYS CHEM-US, V93, P7315 ISHIDA H, 1989, Z NATURFORSCH A, V44, P741 ISHIDA H, 1991, Z NATURFORSCH A, V46, P265 KOBAYASHI A, 1988, Z NATURFORSCH A, V43, P233 KORFER M, 1989, Z NATURFORSCH A, V44, P1177 KRUG V, 1989, ACTA CRYSTALLOGR C, V45, P2022 LAMBERT JB, 1968, J AM CHEM SOC, V90, P1349 MANTSCH HH, 1977, PROG NUCL MAG RES SP, V11, P211 MOOIBROEK S, 1988, CAN J CHEM, V66, P734 MOOIBROEK S, 1989, CAN J CHEM, V63, P2926 OLAH GA, 1984, J ORG CHEM, V49, P2112 PALMER MH, 1986, Z NATURFORSCH A, V41, P1471 PALMER MH, 1990, Z NATURFORSCH A, V45, P357 PENNER GH, 1992, CAN J CHEM, V70, P2420 PENNER GH, 1992, J PHYS CHEM-US, V96, P5121 PETTITT BA, 1981, J MAGN RESON, V44, P508 RATCLIFFE CI, 1979, FARADAY DISC CHEM SO, V13, P142 RATCLIFFE CI, 1986, CAN J CHEM, V64, P1348 RATCLIFFE CI, 1990, J PHYS CHEM-US, V94, P152 RIPMEESTER JA, 1987, DYNAMICS MOL CRYSTAL SCHWARTZ LJ, 1983, J PHYS CHEM-US, V87, P4457 SPIESS HW, 1985, ADV POLYM SCI, V66, P23 THOMAS AF, 1971, DEUTERIUM LABELING O TSAU J, 1970, CAN J CHEM, V48, P717 VEGA AJ, 1987, J CHEM PHYS, V86, P1803 WATKINS MI, 1982, J AM CHEM SOC, V104, P2365 WITTEBORT RJ, 1987, J CHEM PHYS, V86, P5411 XU Q, 1991, Z NATURFORSCH A, V46, P240 ZUCCARO DE, 1959, Z KRISTALLOGR, V112, P26; NR: 42; TC: 6; J9: CAN J CHEM; PG: 10; GA: LC512Source type: Electronic(1
Citation Counting, Citation Ranking, and h-Index of Human-Computer Interaction Researchers: A Comparison between Scopus and Web of Science
No full textThis study examines the differences between Scopus and Web of Science in the citation counting, citation ranking, and h-index of 22 top human-computer interaction (HCI) researchers from EQUATOR--a large British Interdisciplinary Research Collaboration project. Results show that Scopus provides significantly more coverage of HCI literature than Web of Science, primarily due to coverage of relevant ACM and IEEE peer-reviewed conference proceedings. No significant differences exist between the two databases if citations in journals only are compared. Although broader coverage of the literature does not significantly alter the relative citation ranking of individual researchers, Scopus helps distinguish between the researchers in a more nuanced fashion than Web of Science in both citation counting and h-index. Scopus also generates significantly different maps of citation networks of individual scholars than those generated by Web of Science. The study also presents a comparison of h-index scores based on Google Scholar with those based on the union of Scopus and Web of Science. The study concludes that Scopus can be used as a sole data source for citation-based research and evaluation in HCI, especially if citations in conference proceedings are sought and that h scores should be manually calculated instead of relying on system calculations
'If I should die tonight' poem
No full textHumorous poem copied by Harrison Kerr and written by Benjamin Franklin King ca. 1890. The poem, titled "If I should die tonight," jokes about money owed to the author and the shock he would experience at being repaid upon his death. It was written as a parody of a serious contemporary poem of the same title.
Harrison Henry Kerr (1839-1901), born in North Georgetown, Ohio, served along with his brother, Ezra, as a private in Company D of the 58th Ohio Volunteer Infantry. He was taken prisoner at the Battle of Chickasaw Bayou, Mississippi, on December 29, 1862., and held for three months before being exchanged and returning to his regiment. He was discharged on January 14, 1865. Following the war, he was married to Elizabeth (Rettig) Kerr. The two lived in Cleveland and had one son, Harrison McKinley Kerr. In 1888, he joined the Memorial Post No. 141, Grand Army of the Republic. He is buried in North Georgetown Cemetery
Polymer multimode waveguide optical and electronic PCB manufacturing
No full textThe paper describes the research in the £1.3 million IeMRC Integrated Optical and Electronic Interconnect PCB Manufacturing (OPCB) Flagship Project in which 8 companies and 3 universities carry out collaborative research and which was formed and is technically led by the author. The consortium’s research is aimed at investigating a range of fabrication techniques, some established and some novel, for fabricating polymer multimode waveguides from several polymers, some formulations of which are being developed within the project. The challenge is to develop low cost waveguide manufacturing techniques compatible with commercial PCB manufacturing and to reduce their alignment cost. The project aims to take the first steps in making this hybrid optical waveguide and electrical copper track printed circuit board disruptive technology widely available by establishing and incorporating waveguide design rules into commercial PCB layout software and transferring the technology for fabricating such boards to a commercial PCB manufacturer. To focus the research the project is designing an optical waveguide backplane to tight realistic constraints, using commercial layout software with the new optical design rules, for a demonstrator into which 4 daughter cards are plugged, each carrying an aggregate of 80 Gb/s data so that each waveguide carries 10 Gb/s
Combining monitoring and privacy-protection perspectives in a semantic model for IP traffic measurements
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